REPORT OF

THE RIVER MASTER

OF THE DELAWARE RIVER

For the periodDecember 1 , 1985 - November 30, 1986

by Stanley P. Sauer, William E. Harkness, and Bruce E. Krejmas with a section on water quality by Karen L. Vogel________

U.S. GEOLOGICAL SURVEY

Open-File Report 87-250

Reston, Virginia

1987

UNITED STATES DEPARTMENT OF THE INTERIOR

DONALD PAUL HODEL, Secretary

GEOLOGICAL SURVEY

Dallas L. Peck, Director

For additional information write to:

Delaware River Master U.S. Geological Survey, WRD 433 National Center Reston, VA 22092

orDeputy Delaware River Master U.S. Geological Survey 405 Broad Street Milford, PA 18337

Copies of report can be purchased from:

Open-file Services Section Western Distribution Branch U.S. Geological Survey Box 25425, Federal Center Denver, CO 80225

CONTENTS

PageSection I - River Master letter of transraittal and special report 1Section II - Report of Delaware River operations 9Abstract 11Introduction 12Definitions of terras and procedures 12Precipitation 13Acknowledgments 14

Operations 14December to May 14June to November - 17Sunmary 18

Supplementary release from Wallenpaupack powerplant 19Water budget, Delaware River at Montague, N.J. 19Time of transit 20Segregation of flow at Montague 21Computation of directed releases 21Analysis of forecasts 23Diversions to New York City water supply 24Storage in New York City reservoirs 24Comparisons of River Master operation data and other streamflow

records 25Releases from New York City reservoirs 25Releases from Lake Wallenpaupack 27Delaware River at Montague, N.J. 27Diversion tunnels 27

Diversions by New Jersey 29Conformance of operations under Amended Decree 29

Section III - Water quality of the Delaware River estuary 71Introduction 73Water-quality monitoring program 73Estuarine water-quality data during 1986 73Streamflow 74Temperature 74Specific conductance and chloride 74Dissolved oxygen 76Hydrogen-ion concentration (ph) 86

111

ILLUSTRATIONSPage

Figure 1. Map of Delaware River basin above Wilmington, Del. 102. Operating curves for New York City reservoirs 153. Hydrograph of uncontrolled component, Delaware River at Monta­

gue, N.J., June 1 to November 30, 1986 674. Combined storage in Pepacton, Cannonsville and Neversink Res­

ervoirs, June 1967 to December 1986 685. Map of Delaware River estuary 726. Mean monthly temperatures of Delaware River at Benjamin Frank­

lin Bridge, Philadelphia, Pa. 757. Frequency of dissolved-oxygen concentration in the Delaware

River 818. Changes in mean monthly dissolved-oxygen concentrations of the

Delaware River at Benjamin Franklin Bridge, Philadelelphia, Pa. 82

9. Changes in mean monthly dissolved-oxygen concentrations of theDelaware River at Chester, Pa. 83

Plate 1. Hydrograph of components of flow, Delaware River at Montague,N.J., June 1 to November 30, 1986 69

TABLES

Table 1. Precipitation in Delaware River basin above Montague, N.J. 132. Conservation release rates for New York City Delaware River

basin reservoirs 163. Daily discharge East Branch Delaware River at Downsville, N.Y. 314. Daily discharge West Branch Delaware River at Stilesville, N.Y. 325. Daily discharge Wallenpaupack Creek at Wilsonville, Pa. 336. Daily discharge Neversink River at Neversink, N.Y. 347. Daily discharge Delaware River at Montague, N.J. 358. Daily discharge Delaware River at Trenton, N.J. 369. Storage in Pepacton Reservoir, N.Y. 3710. Storage in Cannonsville Reservoir, N.Y. 3811. Storage in Neversink Reservoir, N.Y. 3912. Diversions to New Jersey 4013. Diversions to New York City water supply 4414. New York City reservoir release design data 5015. Reservoir releases and segregation of flow at Montague, N.J. 5416. New York City consunption of water 1940 to 1986 6617. Chloride concentrations, Delaware River at Fort Mifflin, Pa. 7718. Chloride concentrations, Delaware River at Chester, Pa. 7819. Chloride concentrations, Delaware River at Reedy Island Jetty,

Del. 7920. Dissolved oxygen, Delaware River at Benjamin Franklin Bridge,

Philadelphia, Pa. 8421. Dissolved oxygen, Delaware River at Chester, Pa. 85

IV

FACTORS FOR CONVERTING INCH-POUND UNITS 10 METRIC

(INTERNATIONAL SYSTEK) UNITS

Multiply Inch-Pound unit To Obtain Metric unit

inch (in.)

foot (ft)

mile (mi)

Length

25.40

0.3048

1.609

millimeter (mm)

meter (m)

kilometer (km)

2 square mile (mi )

million gallons (l^gal) billion gallon

cfs-day

Area

2.590

Volume

3,7853.785 0.002447

square kilometer (km )

cubic meter (m )3cubic hectometer (m )3 cubic hectometer (hm )

million gallons per day (mgd)

cubic foot per second (cfs)

Flow

0.04381

0.02832

o cubic meter per second (m /s)

3 cubic meter per second (m /s)

v

Section I

RIVER MASTER LETTER OF 1RANSMITTAL

and

SPECIAL REPORT

OFFICE OF THE DELAWARE RIVER MASTERUnited States Geological Survey

433 National Center, Reston, Virginia 22092

July 10, 1987

The Honorable William H. Rehnquist Chief Justice of the Supreme Court of the United States

The Honorable Michael N. Castle Governor of Delaware

The Honorable Thomas H. Kean Governor of New Jersey

The Honorable Mario M. Cuomo Governor of New York

The Honorable Robert P. Casey Governor of Pennsylvania

The HonorableEdward I. KochMayor of the City of New York

Dear Sirs:

New Jersey v. New York et alNo. 5 Original, October Term 1950

For the record and in compliance with the provisions of the Amended Decree of the Supreme Court of the United States entered June 7, 1954, I am transmitting herewith the thirty-third Annual Report of the River Master of the Delaware River for the year December 1, 1985 to November 30, 1986.

It should be noted that Mr. Francis T. Schaefer, who served as Delaware River Master since May 5, 1975, retired from Federal Service in March 1986. However, he continued to serve as River Master until Decem­ ber 31, 1986. Mr. Schaefer guided the operations of the office of the Delaware River Master during the development of the augmented conservation releases program for the enhancement of river quality, fishery, esthetics, and recreation. His leadership was also instrumental during the negotia­ tions that led to the "Interstate Water Management Recommendations of the Parties to the Supreme Court Decree of 1954".

My designation by the Chief Hydrologist, with the concurrence of the Director, U.S. Geological Survey, as successor to Mr. Schaefer, was made effective January 1, 1987.

The recovery from the drought of 1984-85, which was underway at the end of the 1985 report year continued into the current year. On Decem­ ber 1, 1985, the beginning of the report year, the contents of Carmons- ville, Pepacton, and Neversink reservoirs totaled 181 billion gallons. By December 18, 1985 the contents totaled 199 billion gallons and had been more than 40 billion gallons above the drought-warning zone of the operating rule curve, figure 2, since November 16. Therefore, in accordance with procedures outlined in the "Interstate Water Management Recommendations of the Parties to the 1954 Decree", the Delaware River Basin Commission declared an end to the state of emergency in the water supplies of the basin which had been in effect since May 13, 1985.

On October 31, 1985, the Delaware River Basin Commission with the unanimous approval of the parties to the decree had modified the schedule of diversions and streamflow objectives from those that had been instituted to combat the drought. Allowable New York City diversions were increased to 740 million gallons per day, the MDntague flow objective was increased to 1,700 cfs, and the New Jersey diversions and Trenton flow objective were returned to normal levels. These levels of operation were dis­ continued on December 18 and the normal levels specified by the Decree were put into effect the following day.

Throughout the remainder of the year, diversions for water supply for New York City and releases designed to maintain the flow of the Delaware River at MDntague were made as directed by this office and as provided in the Decree. Diversions by New York City from the Delaware River basin reservoirs did not exceed the limit specified by the Decree or the limits imposed during the period of water-supply deficiency.

The dredging project on the Delaware & Raritan Canal by the State of New Jersey, which had kept the canal closed during the 1985 report year, was sufficiently completed by mid-December to allow diversion of water from the Delaware River. The Canal was officially opened on December 18, 1985. Diversions by the State of New Jersey during the year were within the limits allowed by the Decree.

The Delaware River Master Advisory Committee met in Sparrow Bush, New York, on May 23, 1986 to discuss hydrologic conditions in the basin and operational procedures during the 1986 release season. Mr. Schaefer informed the committee that the excess release quantity that would be released beginning June 15 was 7.381 billion gallons. This quantity would be released at rates designed to maintain the Montague target flow at 100 cfs above the normal 1 ,750 cfs specified by the Decree.

A proposal by Pennsylvania to change the method currently being used to correct for differences between directed releases and the amount required to precisely maintain the Montague formula was discussed. The Milford office was requested to study the proposal, compare it with the current method and submit a recommendation to the Advisory Committee. A study was completed and submitted to the Advisory Committee on August 5, 1986. However, the re­ lease period for 1986 was in progress by that time and no action on the proposal was taken. Additional studies will be completed and the proposal will be considered again prior to the 1987 release period.

Also discussed at the meeting was the inadequacy of the monitoring system for the New Jersey diversions through the Delaware & Raritan Canal. As a result of this discussion, this office requested New Jersey to take whatever steps were necessary to improve the monitoring system to provide accurate data on their diversion of water from the Delaware River. Plans are currently underway to install an acoustic velocity meter and remote transmission equipment designed to meet the need for information. That project should be completed within the next year. It should be noted that the discussion was not prompted by a concern that New Jersey was violating the provisions of the Decree but only that at times the present gages do not provide accurate data. It should also be noted that New Jersey is cooperating fully with the concern expressed by the Advisory Committee and this office.

On October 6-7, at the invitation of New York City, this office sponsored an inspection of a portion of the New York City water supply system. The inspection trip was attended by approximately 40 persons from various Federal, State and local agencies interested in the water resources of the Delaware River basin. New York City, Bureau of Water Supply personnel hosted the trip and provided very interesting commentary on their facilities and their use of water from the Delaware River basin.

During the report year, the River Master and staff participated in meetings of the Delaware River Basin Commission to assess water-supply conditions. Upon invitation of the representatives of parties to the Decree, the River Master or his assistants met periodically with those representatives as a member of the Flow Management Technical Advisory Committee. Discussions primarily centered on proposals for the manage­ ment of releases from reservoirs in the basin and other measures designed to cope with streamflow deficiences whenever they occur.

The U.S. Geological Survey continued the operation of its field office of the Delaware River Master at Milford, Pennsylvania. William E. Harkness, Deputy Delaware River Master, continued in charge of the office, assisted by Beverly A. Roberts. In April, Bruce E. Krejmas transferred to the Milford office to replace Robert W. Baebenroth, who transferred from the office November 1 , 1985.

During the report year, the Milford office continued the weekly dis­ tribution of summary river data. These weekly reports contained prelimi­ nary data on releases from the New York City reservoirs to the Delaware River, diversions to the New York City water-supply system, reservoir con­ tents, daily segregation of flow of the Delaware River at the Montague gaging station, and diversions by New Jersey. The reports were made avail­ able to the State and City representatives on the Delaware River Master Advisory Committee and to other parties interested in the Delaware River operations. A special monthly summary of past hydrologic conditions, supplemented by an "outlook" of the river flow for the forthcoming month, was made available to the representatives on the Advisory Committee.

Section II of the report describes in detail Delaware River operations during the report year. As shown on page 18, the City of New York diverted a total of 243.603 billion gallons from the basin during the report year ending November 30, 1986 and released 66.522 billion gallons from Pepacton, Cannonsville, and Neversink Reservoirs to the Delaware River during the same period. The River Master directed releases to the Delaware River from these reservoirs totaling 26.752 billion gallons.

Section III of the report describes water quality at various sites in the Delaware River Estuary. It was prepared by Karen L. Vogel, U.S. Geo- logial Survey, Malvern, Pennsylvania. It contains data showing the extent of salinity encroachment and other water-quality characteristics in the estuary.

During the report year, the following individuals functioned as mem­ bers of the River Master Advisory Committee:

Delaware Dr. Robert R. Jordan

New Jersey Dirk C. Hofman, P.E.

New York Edward A. Karath, P.E. William E. Lee

New York City Joseph T. M^Gough, Jr. Harvey W. Schultz

Pennsylvania R. Timothy Weston

The appreciation of the River Master and staff is expressed for the continued excellent cooperation of all the representatives of the parties to the Decree. Also, appreciation is extended to the Pennsylvania Power & Light Company and the Orange and Rockland Utilities, Inc., for their cooperation in keeping us informed of their plans for power generation and resulting releases as requested by this office. As usual, it is gratifying to report that New York City complied willingly with the terms of the Decree, with the emergency reductions of diversions and releases, and with the directives of the River Master.

A draft of this report was furnished to the Advisory Committee mem­ bers for comment.

Sincerely yours,

-/ 1 v >

Stanley P. Saue^, P'.E. Delaware River Master

Section II

REPORT OF DELAWARE RIVER OPERATIONS

76< 75'

42' NEW YORK

PENNSYLVANIA

EXPLANATION

A Key gaging station A Index gaging station

Basin boundary

41'

40 C

10 20 30 MILES

T I| 0 10 20 30 40 KILOMETERS

Figure 1. - Delaware River Basin Above Wilmington, Delaware.

10

Section II

REPORT OF DELAWARE RIVER OPERATIONS

by William E. Harkness and Bruce E. Krejmas

ABSTRACT

A Decree of the Supreme Court of the United States in 1954 established the position of Delaware River Master. The Decree authorizes diversions of water from the Delaware River basin (Figure 1) and requires compensating releases from certain reservoirs of the City of New York to be made under the supervison and direction of the River Master. Reports to the Court, not less frequently than annually, were stipulated.

During the 1986 report year, December 1, 1985, to November 30, 1986, precipitation and runoff varied from below average to above average in the Delaware River basin. For the year as a whole, precipitation was 4.3 in­ ches above average. Runoff was near average. Operations were under a sta­ tus of drought at the beginning of the report year. The drought emergency was terminated on December 18, 1985, by the Delaware River Basin Commission, and operations were returned to normal as prescribed by the Decree for the remainder of the report year. Storage in the reservoirs increased to capacity during the winter months and all New York City Delaware River Basin reservoirs spilled throughout the year.

Diversions from the Delaware River basin by New York City and New Jersey did not exceed those authorized by the terms of the Amended Decree. Releases were made as directed by the River Master at rates designed to meet the Montague flow objective on 69 days during the June to November period. Releases were made at conservation rates or at rates designed to relieve thermal stress in the streams downstream from the reservoirs at other times. The excess release quantity as defined by the Decree was not expended by the end of the report year.

New York City complied fully with the terras of the Decree and with the directives of the River Master during the year.

11

INTRODUCTION

The Amended Decree of the United States Supreme Court entered June 7, 1954 authorized diversions of water from the Delaware River basin and pro­ vided for releases of water from certain reservoirs of the City of New York to the Delaware River to be made under the supervision and direction of the River Master. The Decree also stipulated that reports be made to the Court not less frequently than annually. This report describes the River Master operations from December 1 , 1985 to November 30, 1986.

Definitions of Terms and Procedures

The following definitions apply to various terms and procedures used in the operations described in this report. A table for converting inch-pound units to International System of Units (SI) is given on page v. The map of the Delaware River basin (fig. 1), indicates the location of pertinent streams and reservoirs.

Time of day. - Time of day is expressed in 24-hour eastern standard time, which included a 23-hour day April 27 and a 25-hour day October 26.

Rate of flow. - Mean discharge for any stated 24-hour period, in cubic feet per second (cfs) or million gallons per day (mgd).

Rate of flow at Montague. - Daily mean discharge of the Delaware River at Msntague, N.J., on a calendar-day basis.

Reservoir-controlled releases. - Controlled releases from reservoirs passed through outlet valves IrT the dams or through turbines in power- plants. This does not include spillway overflow at the reservoirs.

Uncontrolled runoff at Montague. - Runoff from the drainage area above Montague exclusive of the drainage area above the Downsville, Cannonsville, Neversink, Wallenpaupack, and Mongaup dams but including spillway over­ flow at these dams.

Point of maximum reservoir depletion. - Elevation at the top of the highest outlet, sometimes referred to as minimum full-operation level.

Storage or contents. - Usable volune of water in a reservoir. Unless otherwise indicated, volune is computed on the basis of level pool and above the point of maximum depletion.

Capacity. - Total usable volume between the point of maximum depletion and the elevation of the lowest crest of the spillway.

Diversions. - The City of New York diverts water from Pepacton, Cannonsville, and Neversink Reservoirs in the upper Delaware River basin through the East Delaware, West Delaware, and Neversink Tunnels, respec­ tively, to its water-supply system.

The State of New Jersey diverts water from the Delaware River through the Delaware & Raritan Canal.

Excess quantity and seasonal period for its release. - As defined in the Decree, the excess quantity of water equals 83 percent of the amount by which the estimated consumption in New York City during the year is less than the City's estimate of continuous safe yield (1,665 mgd stipu­ lated by 1954 Decree) from all its sources of supply obtainable without pumping, except that the excess quantity should not exceed 70 billion gallons. Each year the "seasonal period" for release of excess quantity begins on June 15. The design rate for that period becomes effective at Montague on that date and continues in effect until the following March 15, or until the cunulative total of excess-release credits becomes equal to the seasonal quantity, whichever occurs first.

12

Daily excess-release credits. - Daily credits and deficits during the seasonal period are equal to the algebraic difference between the daily mean discharge at Msntague and 1,750 cfs; however, the daily credit cannot exceed the 24-hour period releases from Pepacton, Carmonsville and Never- sink Reservoirs routed to Msntague and made in accordance with direction, with the following exception. During the seasonal period, credits are also made for part or all of other releases from these reservoirs contri­ buting to daily mean discharge at Msntague between the excess-releaserate and 1,750 cfs.

Precipitation

Precipitation observed on the basin above Montague totaled 47.56 inches for the 1986 report year and was 4.4 inches above the long term average. Precipitation varied from 55 percent of the long term average in Septem­ ber to about 1.5 times the average in June, July and November. Table 1 compares the monthly precipitation during the report year with the long term average.

Table 1.- Precipitation in inches, Delaware River basin above Montague, N.J.

Month

DecemberJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovember

December 1940 toNovember 1985

Average Am3.49 22.87 32.78 33.30 33.76 34.22 33.95 64.07 63.92 33.72 23.31 33.79 5

December 1985Percentage

ount of average.62 75.46 121.80 137.66 111.77 100.63 86.23 158.03 148.29 84.04 55.26 98.77 152

to November 1986Excess (+) or deficit (-)

Month-0.87+ .59

+1.02+ .36+ .01-.59

+2.28+1.96-.63

-1.68-.05

+1.98

Cumulative-0.87-.28+ .74

+1.10+1.11+ .52

+2.80+4.76+4.13+2.45+2.40+4.38

12 months 43.18 47.56 110 +4.38

These data were computed from records collected by the National Weather Service, New York City Department of Environmental Protection, Bureau of Water Supply and the River Master, at ten stations distributed over the basin area above Montague.

December to May is generally considered the normal time of year when surface- and ground-water reservoirs fill. During this period in 1985-86, precipitation totalling 20.94 inches was observed, which was 103 percent of the 45-year average. During June to November, 26.62 inches of precipi­ tation was observed, which was 117 percent of the 45-year average. The maximum monthly precipitation listed during the year for any of the ten stations was 9.70 inches in June at Narrowsburg, N.Y.; the minimum monthly precipitation observed was 1.39 inches in September at Milford, Pennsyl­ vania.

13

Acknowledgments

Part of the hydrologic data presented are records of U.S. Geological Survey gaging stations. These records were collected, computed and fur­ nished by the Offices of the U.S. Geological Survey at Albany, New York, Malvern, Pennsylvania, and Trenton, New Jersey, in cooperation with the States of New York and New Jersey, the Commonwealth of Pennsylvania, and the City of New York.

The River Master daily operation records were prepared by the Milford Office of the Delaware River Master from hydrologic data collected prin­ cipally on a day-to-day basis. Data for these records were collected and computed by the Milford Office or were furnished by agencies, as follows: Data from Pepacton, Cannonsville and Neversink Reservoirs by the New York City Department of Environmental Protection, Bureau of Water Supply; from Lake Wallenpaupack by the Pennsylvania Power & Light Company; and from Mbngaup Reservoir by Orange and Rockland Utilities, Inc. Precipitation data and quantitative precipitation forecasts were provided by the National Oceanic and Atmospheric Administration, National Weather Service.

OPERATIONS

December to May

During the first half of the report year, precipitation was 0.5 inches above average and ranged from 75 percent of the long term average in December to 137 percent in February (See table 1.) Precipitation during the last three months of the previous report year was 5.4 inches above average, which resulted in runoff in the upper basin being slightly above normal during December through March. Runoff was below normal during April and May, because precipitation during that period was slightly below normal and temperatures were above normal during late March and April.

On December 1, 1985, Pepacton Reservoir contained 83.164 billion gal­ lons of water in storage above the point of maximum depletion, or 59.3 per­ cent of the reservoir's storage capacity of 140.190 billion gallons. Cannonsville Reservoir contained 71.066 billion gallons, or 74.3 percent of the reservoir's storage capacity of 95.706 billion gallons and Never­ sink Reservoir contained 26.659 billion gallons, or 76.3 percent of the reservoir's storage capacity of 34.941 billion gallons. The combined stor­ age in the three reservoirs as of December 1 was 180.889 billion gallons, or 66.8 percent of their combined capacity. Daily storages in Pepacton, Cannonsville and Neversink Reservoirs are shown in tables 9, 10 and 11, respectively and the combined storage is shown graphically in figure 2.

14

280(0 COMBINED CAPACITY

SPILLWAY LEVEL

N

Figure 2.-Operating curves for New York City reservoirs in the Delaware River basin compared with the actual contents of the reservoirs, December 1, 1985 to November 30, 1986.

On October 30, 1985, during the previous report year, the Delaware River Basin Conmission, in response to improved reservoir storage and general hydrologic conditions in the basin had modified the restrictions that had been placed on diversions and flow objectives in the basin. The parties to the Decree approved the action and the Montague flow objective was set at 1,700 cfs, allowable diversions to New York City were increased to 740 mgd, and the New Jersey diversions and the Trenton flow objective were returned to normal levels. The conservation releases from New York City reservoirs were set at the basic summer levels rather than being reduced to winter levels which would have occurred on November 1. (See table 2.)

By December 18, the storage in the reservoirs had been more than 40 billion gallons above the drought warning zone of the operating curves for 30 consecutive days. Therefore, per the "Interstate Water Management Recommendations of the Parties to the Decree", the Delaware River Basin Commission with the unanimous approval of the parties to the Decree declared an end to the state of emergency in the water supplies of the basin. As a result the flow objectives and allowable diversions were returned to the normal levels as defined by the decree. Conservation releases were returned to the augmented levels shown in table 2.

15

Table 2.- Conservation release rates for New York City DelawareRiver Basin reservoirs

ReservoirOperative

dates

Conservation releases ratesBasic (cfs)

Augmented (cfs)

Neversink April 1-7 5 45 April 8 to October 31 15 45 November 1 to March 31 5 25

Pepacton

Cannonsville

April 1-7April 8 to October 31November 1 to March 31

April 1-15April 16 to June 14June 15 to August 15August 16 to October 31November 1 -30December 1 to March 31

6196

8232323238

707050

4545325453333

Water-supply conditions continued to improve throughout the winter months. Cannonsville reservoir filled to capacity and began spilling on February 25. Cannonsville reservoir spilled continuously from February 25 to June 25, except May 4-20 when it was within 0.5 ft of spillway level. A total of 86.785 billion gallons spilled during the year. The reservoir reached an all time high elevation of 1,156.73 ft on March 16. Storage on that date was 106.705 billion gallons, 111.5 percent of capacity.

Pepacton reservoir filled to capacity on March 22. The reservoir spilled March 22 to April 18, May 22 to June 1, and June 6-21. A total of 16.475 billion gallons spilled during the year.

Neversink reservoir filled to capacity and spilled briefly on two occasions. During the period, May 21-25, a total of 1.584 billion gallons spilled and June 13-17, 0.181 billion gallons spilled, for a total spill­ age from Neversink reservoir during the year of 1.765 billion gallons.

The combined storage in the reservoirs, as shown in figure 2, reached a peak for the year of 275.672 billion gallons, 102 percent of capacity, on May 24.

Diversions to Rondout reservoir by the City of New York totaled 107.649 billion gallons during the December 1 to May 31 period. During this same period, the anticipated discharge at Montague, exclusive of water released from the City reservoirs, fell below the applicable design rate on four days and releases totaling 670 cfs-days (433 million gallons) were directed to meet the MDntague flow objective. In addition to the Rivermaster directed releases, New York City made releases for conservation purposes at rates set forth in the Delaware River Basin Commission, Resoli*- tion No. 85-41, and the Interstate Water Management Recommendations of the Parties to the Decree. Releases were made at the rates prescribed by DRBC Dec. 1-18, and at the augmented conservation rates shown in table 2, December 19 to May 31.

16

There was only one day during the December to May period when the ob­ served discharge at Montague was less than the prevailing design rate. (See table 15.) This deficiency was the result of difficulty in pre­ dicting the effect of the accunulation of ice during cold weather.

Inflow to the City's reservoirs during the December through May period generally exceeds draft rates and therefore increases storage. The average inflow to Pepacton, Cannonsville, and Neversink Reservoirs for these six months during the 45-year period, December 1940 to May 1985, was 303.8 billion gallons. During the corresponding six months of the current report year, inflow to the three reservoirs totaled 305.9 billion gallons. Evaporation loss was not included in the computation. Storage in the three reservoirs increased from 179.361 billion gallons on November 30, 1985 to 270.824 billion gallons May 31, 1986.

June to November

Precipitation during the June to November period was above average in June, July and November, was below average in August and September, and was near average in October. Precipitation for the period was 26.62 inches, which was 3.86 inches above average. (See table 1.)

Diversions to Rondout Reservoir June 1 to November 30 totaled 135.954 billion gallons. The equivalent diversion rate did not exceed the limit specified by the Decree and was 743 mgd on November 30. Releases were directed to satisfy the Mantague Formula on 69 days when the antici­ pated discharge at Mantague exclusive of water released from the City reservoirs fell below the design rate. Releases at augmented conservation rates or at rates designed to relieve thermal stress were made at other times from each reservoir by the City of New York. A total of 3,189 cfs-days (2.062 billion gallons) was released for the relief of thermal stress between July 6 and August 25.

During June 1-14, the flow required to be maintained in the Delaware River at Mantague was the minimum basic rate of 1,750 cfs. The fore­ casted discharge, exclusive of releases from Pepacton, Cannonsville and Neversink Reservoirs, was greater than 1,750 cfs each day. During that per­ iod the observed discharge at Mantague was always greater than 1,750 cfs.

On June 15, the seasonal period began for release of the excess quantity of water from the reservoirs, and the design rate at Mantague was increased to 1 ,850 cfs. This rate was composed of the basic rate of 1,750 cfs plus 100 cfs of required excess releases.

The New York City Department of Environmental Protection, Bureau of Water Supply, furnished the River Master with the following advance data for the 1986 calendar year:

17

1. The estimated continuous safe yield, from all the City's sour­ ces, obtainable without pumping, is 1,665 mgd, or a total during the calendar year 1986 of 1,665 x 365 days = 607.725 billion gallons.

2. The estimated consumption that the City must provide from all its sources of supply during the calendar year 1986 is 591.582 + 7.250 = 598.832 billion gallons.

On the basis of the provisions of the Decree and the above data, the aggregate quantity of excess-release water was 83 percent of (607.725 - 598.832) or 7.381 billion gallons. The Montague design rate during the excess release period beginning June 15, 1986, was computed as:

1,750 cfs + 7>3B1 billion gallons x 1,547 cfs/bgd = 1 ^Q cfe

120 days

Data on consumption of water by the City of New York for each calendar year, beginning in 1940, are shown in table 16.

The design rate of 1,850 cfs at Montague was required continuously after June 15 because the excess-release quantity was not expended by the end of the report year. Directed releases from the City reservoirs were designed to maintain the rate of 1,850 cfs at Montague but because the runoff from precipitation was high for much of the period, only 9,092 cfs- days (5.877 billion gallons) of the available 11,418 cfs-days (7.381 bil­ lion gallons) was released by November 30.

During June to November there were 69 days when the advance estimate of flow at Montague exclusive of releases from New York City reservoirs was less than the design rate and releases were directed to meet the Montague formula. Also during this period there were 33 days when the observed flow at Mantague was less than the design rate.

The hydrographs of plate 1 , show the total discharge at Montague; the portion derived from uncontrolled runoff downstream from the reservoirs; the portion contributed by the power reservoirs; and the portion contri­ buted by Pepacton, Cannonsville and Neversink Reservoirs. In analyzing the water budget at Montague, the uncontrolled runoff downstream from the reservoirs was computed as the residual of observed flow less releases from all reservoirs and therefore was subject to all the errors in obser­ vations, transit times, and routing of the several components of flow. All of these uncertainties are contained in the computed hydrograph of uncontrolled runoff.

Summary

From Dectfnber 1, 1985, to November 30, 1986, diversions to Rondout Reservoir totaled 243.603 billion gallons, and all releases from the New York City reservoirs to the Delaware River totaled 102,909 cfs-days (66.522 billion gallons).

18

During the year, maximum storage in Pepacton Reservoir was 141.857 billion gallons, on May 24. Maximum storage in Cannonsville Reservoir was 106.705 billion gallons, on March 16. Maximum storage in Neversink Reservoir was 35.294 billion gallons, on May 23. The maximum combined storage in the three reservoirs during the year was 275.672 billion gallons, or 102 percent of capacity, on May 24.

Minimum storage during the year in Pepacton Reservoir was 83.164 bil­ lion gallons, or 59 percent of capacity on December 1, 1985. The minimum storage in Cannonsville Reservoir was 67.993 billion gallons, or 71 percent of capacity on November 6, 1986. Minimum storage in Neversink Reservoir was 16.917 billion gallons, or 48 percent of capacity on November 8 and 20, 1986. Minimum combined storage in the three reservoirs was 180.889 billion gal­ lons, or 67 percent of capacity December 1 , 1985.

A resume 1 of the combined storage of the three reservoirs on the first day of the month June 1967 to December 1986 is shown in figure 4. Storage was above the median all months except February and May.

On November 30, 1986, combined storage in the three reservoirs was 223.121 billion gallons, or 82 percent of their combined capacity. During the year, combined storage increased 42.232 billion gallons, or 16 percent of capacity.

SUPPLEMENTARY RELEASE FROM WALLENPAUPACK POWERPLANT

An agreement between Pennsylvania Power & Light Company and the City of New York provides for supplementary releases from Wallenpaupack hydroelectric powerplant if the Delaware River Basin Commission requests compensation for water consumed at the Company's Martins Creek steam- electric generating station. Releases may be requested if the flow of the Delaware River at Trenton, N.J. is expected to be less than 3,000 cfs for more than three consecutive days. No supplementary releases were requested during the year.

WATER BUDGET, DELAWARE RIVER AT MONTAGUE, N.J.

The data and computations of the water budget formed the basic opera­ tional records required to carry out the River Master's specific responsi­ bilities with respect to the Montague Formula and Interstate Water Manage­ ment Recommendations and the DRBC Conservation Orders 1-7 during the report year. The water budget has two parts: (1) advance estimates of the daily average flow at Montague, exclusive of controlled releases from New York City's reservoirs (table 14) and (2) segregation of the daily average flow at Montague among its various source components (table 15). The time in­ tervals required for water to travel from the various sources to Montague were taken into account.

Discharge of the Delaware River at Montague was composed of the following source components:

19

1. Controlled releases from Lake Wallenpaupack on Wallenpaupack Creek in the production of hydroelectric power.

2. Controlled releases from Mongaup Reservoir on Mongaup River in the production of hydroelectric power.

3. Runoff from the uncontrolled area upstream from Montague.

4. Controlled releases from Pepacton, Cannonsville and Neversink Reservoirs of the City of New York.

The release from the City's reservoirs necessary to maintain the applicable rate of flow at Montague was computed from the advance estimates of flow at Montague, exclusive of controlled releases from the City's reservoirs.

TIME OF TRANSIT

The average times for the effective transit of water from the various sources of controlled supply to Montague used for discharge routing during the 1986 report year are as follows:

Source Hours

Pepacton Reservoir 60Cannonsville Reservoir 48Neversink Reservoir 33Lake Wallenpaupack 16Mongaup Reservoir 12

This schedule was developed from reservoir and powerplant operations and gaging-station records of prior years and was found generally suitable. At times, noticeable exceptions occur, e.g., when a large release from Cannonsville Reservoir follows a small one, a large part of the release is expended in filling the channel en route, and the remainder may appear at Montague as much as 18 hours late. During the winter, the cold weather causes ice to form in the stream, which, together with the low streamflow, gradually increases the resistance to streamflow and lengthens the time of transit.

On several occasions during September and October when large releases were directed following small ones, these releases were directed to begin from 9 to 12 hours earlier than normal to compensate for the expected increase in travel time. These adjustments were helpful in getting the directed releases to Montague within the appropriate time frame, but were not fully successful. Therefore, the observed Montague flow tended to be low on the first day that these releases were expected to arrive and to be high on the second or third day. The average of the observed flow for approximately three days, when this procedure was used was usually close to the design rate.

20

SEGREGATION OF FLOW AT MDNTAGUE

The River Master daily operation record of reservoir releases and daily segregation of flow among the various source components contributing to the flow of the Delaware River at lybntague is shown in table 15 on page 54. The arrangement of data conforms with the downstream movement of water from the various sources to MDntague. A horizontal summation of data in the table is equivalent to routing the various contributions to MDntague, using the sched­ ule for travel time of water discussed previously. The uncontrolled runoff was computed by subtracting the contributions of the several other sources from the observed discharge at MDntague.

COMPUTATION OF DIRECTED RELEASES

In the daily operations, it was necessary that the River Master utilize: (1) discharges computed from recorded or reported stream gage heights for various 24-hour periods without current information about changes in stage-discharge relations that might have occurred; (2) daily discharge from New York City's three reservoirs obtained from venturi meters; (3) rainfall reports for the previous 24 hours; (4) actual power- plant operations converted to daily discharge; (5) advance estimates of power demand converted to daily discharge; (6) advance estimates of uncon­ trolled runoff at MDntague; and (7) average times for routing of water from the several sources. Variable errors of estimate occur in projecting data, but these data must be used in the daily design and direction of releases from the reservoirs.

The time of transit of water from Pepacton Reservoir to MDntague was greater than that from any other reservoir above MDntague, therefore, the time of daily directed releases to maintain prescribed rates of flow at Montague was based on time of transit from Pepacton Reservoir. Releases from Cannonsville and Neversink Reservoirs were timed to arrive at Montague concurrently with releases from Pepacton Reservoir. To allow for the actual differences in transit times, daily directed releases began at Pepacton at 1200 hours, at Cannonsville at 2400 hours, and at 1500 hours the following day at Neversink.

The determination of the amount of release required from the City's reservoirs to maintain specified rates of flow at MDntague was based on estimates of releases from Lake Wallenpaupack and MDngaup Reservoir and an estimate of the uncontrolled runoff at MDntague. Taking into account the time of transit from these sources to MDntague, this determination required that advance estimates of the following components be made on the morning of each day: (1) the expected release of water from Lake Wallenpaupack for power production for a 24-hour period, beginning at 0800, two days later; (2) expected release of water from MDngaup Reservoir for power production for a 24-hour period, beginning at 1200, two days later; and (3) expected uncontrolled runoff at MDntague three days later. The River Master daily operation record for computing daily directed release from the City's reservoirs during the periods of low flow is shown in table 14.

21

The electric power companies cooperated fully in furnishing advance estimates of powerplant releases. As the hydroelectric plants were used chiefly for meeting peak-power demands of the system, advance estimates were subject to many modifying factors such as the influence of the vagaries of weather upon peak-power demand and unpredictable transmission and mechanical difficulties in electric-system operation. As a result, the actual use of water for power generation was at times at considerable variance with the advance estimates that were used by the River Master 1 s office in design computation.

For computation purposes during periods of low flow, the estimate of uncontrolled runoff at Msntague three days in advance was treated as two items: (1) present runoff and (2) estimated increase in runoff from preci­ pitation. The present runoff was computed for 2,156 square miles of un­ controlled drainage area above Montague based on conditions over the drainage area as of 0800 on the morning the estimate was made. The esti­ mated increase in runoff was computed from precipitation which was fore­ cast to occur on the day the estimate was made and the following two days. Estimated quantities for these items are shown in table 14.

During the winter period, the advance estimate of the uncontrolled runoff (present conditions) was based on flows at nearby gaging stations and on the recession curve of the uncontrolled flow at Montague projected to the design date, three days hence.

During open-river conditions, the present runoff portion of the advance estimate of uncontrolled runoff was based on discharges as of 0800 at gaging stations listed below:

Drainage area_____Station_____ _____(square miles) Beaver Kill at Cooks Falls, N.Y. 241 Cadosia Creek at Cadosia, N.Y. 17.9 Oquaga Creek at Deposit, N.Y. 67.6 Equinunk Creek at Equinunk, Pa. 56.3 Callicoon Creek at Callicoon, N.Y. 110 Tenmile River at Tusten, N.Y. 45.6 Lackawaxen River at Hawley, Pa. 290 Shohola Creek near Shohola, Pa. 83.6 Neversink River at Port Jervis, N.Y. 336

The procedure for computing the advance estimate combined a routing and recession (as applicable) of the 0800 discharges of the Beaver Kill, Oquaga, Equinunk, Callicoon and Shohola Creeks and Tenmile, Lackawaxen, and Neversink Rivers gaging stations to Montague, with a computed yield from the remaining ungaged, uncontrolled drainage area. Releases from Never­ sink Reservoir were deducted from discharge of the Neversink River site. The yield from the ungaged, uncontrolled drainage area was estimated on the basis of the yield of Cadosia, Oquaga, Equinunk, and Callicoon Creeks, and Tenmile and Lackawaxen Rivers with routing and recession by individual gaging stations.

22

The advance estimate of increase in runoff from precipitation is shown in table 14 under the heading of "Weather Adjustment. The National Weather Service Office, Philadelphia, Pa., cooperated throughout the low- flow periods by furnishing quantitative forecasts of average precipitation over the drainage area above Montague and air temperatures for each day of the three-day period. During the winter, the probable increase in runoff was estimated from the current state of snow and ice and from forecasted temperature and precipitation for the several days under consideration. During open-river conditions, runoff from the forecasted precipitation was estimated from previously established relationships.

The total anticipated flow at Montague, exclusive of releases from the City's reservoirs (table 14), was the sura of the forecasted releases from the power reservoirs, the estimated uncontrolled runoff under then current conditions, and the weather adjustment. The amount by which this computed flow was less than the prescribed Montague rate indicated the expected deficiency at Montague, which would have to be made up by corresponding releases from New York City reservoirs.

There were times when revised forecasts of weather or powerplant re­ lease in substantial amount became available before the completion of the required release from New York City reservoirs. At such times, the re­ lease required from New York City reservoirs was recomputed on the basis of the revised information, and the release required was changed to re­ vised indicated deficiency. Usually this procedure resulted in a reduced release requirement from New York City reservoirs and the conservation of water. Only the final figures are shown in table 14.

ANALYSIS OF FORECASTS

Forecasts of the flow at MDntague based on the anticipated flow of the several components (exclusive of the release from the City's reservoirs) vary somewhat with those actually experienced on most days even under the most favorable conditions. The daily variations in the several components are often partially compensating with the resulting forecast being fairly accurate.

The advance estimate of flow of the Delaware River at Montague ex­ clusive of the releases from the New York City reservoirs was less than the design rate on two days each month during January, May and June, eight days during July, four days during August and on an almost continous basis from September 1 to November 9 and releases were directed. The table below compares the advance estimates of the various contributions to the flow at Montague to the observed operations during the August 31 to November 9, 1986 period when releases were directed on most days.

23

New York City releases Directed Other

Power releases Lake Wallenpaupack Mongaup Reservoir

Runoff from uncontrolled area

Advance estimates (cfs-days)

a 36,049

14,394 c 11,438 c 57,596

Observed operations (cfs-days)

b 36,253 2,602

15,283 c 9,997 c 63,885

Q

, Directed release as designed.Actual release in response to direction.

c Aug. 31 to Oct. 5, Oct. 12 to Nov. 8.

The table shows that during the period of comparison, New York City released slightly more water, 0.6 percent, than was directed. The power companies released 6.2 percent more water from Lake Wallenpaupack and 13 percent less water from Mongaup reservoir than was forecast. The total power releases were 2.1 percent less than the forecast. The forecast runoff from the uncontrolled area during the period was 11 percent less than the observed runoff from the uncontrolled area.

On the basis of the observed discharges at Montague, exact forecasting of releases required from the City's reservoirs during the period, August 31 to November 9, would have totaled 37,501 cfs-days. The releases, as designed, totaled 36,253 cfs-days, or 3.3 percent less than for exact forecasting.

A comparison of the hydrographs on figure 3, of forecast uncontrolled runoff and the actual uncontrolled runoff indicate that the forecasting procedures were generally adequate. The forecast included anticipated uncontrolled runoff under then-existing conditions plus the weather adjustment based on forecast precipitation. Analysis of the hydrographs indicate that the forecast procedures tended to underestimate the runoff during high precipitation events.

DIVERSIONS TO NEW TORK CITY V&TER SUPPLY

Table 13 shows diversions from Pepacton, Cannonsville and Neversink Reservoirs to the New York City water-supply system during the report year. The tabulation includes a running account of the average rates of the combined diversions from the reservoirs, computed as prescribed by Delaware River Basin Commission Resolution No. 85-41, approved by the par­ ties to the Decree December, 1-18 and by the Decree thereafter. The tabu­ lation shows that the allowable maximum equivalent diversion rates were not exceeded at any time.

STORAGE IN NEW TORK CITY RESERVOIRS

The New York City Board of Water Supply determined the "point of maxi­ mum depletion" and other pertinent reservoir levels and contents of Pepac­ ton, Cannonsville and Neversink Reservoirs as follows:

24

Reservoir level Pepacton Res.Elev. (feet)

Contents (billion gallons)

Cannonsville Res.Elev. (feet)

Contents (billion gallons)

Neversink Res.Elev. (feet)

Contents (billion gallons)

Full pool or 1,280.00 1,150.00 1,440.00spillway crest *140.190 *95.706 *34.941

Point of raaxi- 1,152.00 1,040.00 1,319.00imm depletion *3.511 *1.020 *0.525

Sill of diversion 1,143.00 +1,035.00 1,314.00tunnel *4.200 *1.564

Sill of river 1,126.50 1,020.5 1,314.00outlet tunnel

Dead storage_____________1 .800__________0.328___________1 .680

*Contents shown are quantities stored between listed elevations. Elevation of mouth of inlet channel of diversion works.

Tables 9, 10 and 11 show storage in Pepacton, Cannonsville and Never­ sink Reservoirs, respectively, above "point of maximum depletion" or mini­ mum full-operating level.

On December 1, 1985 combined storage in the three reservoirs was 180.889 billion gallons, which was 71 billion gallons above the drought warning level as defined by the Interstate Water Management Recommendations. Storage increased gradually throughout the winter months with only a slight drop in mid-January because of reduced inflow during the cold weather. Combined storage reached 100 percent of capacity on March 20 and remained near full operating levels through June.

Storage decreased seasonally throughout the summer and fall in re­ sponse to normal diversions to the New York City water-supply system and releases required to maintain the Montague flow objective. Heavy precipi­ tation occurred during November and storage increased from a seasonal low of 186.439 billion gallons on November 8 to 223.121 billion gallons on November 30.

COMPARISONS OF RIVER MASTER OPERATION DATA AND OTHER STREAMFLDW RECORDS

It has been explained that the River Master operations are, in effect, day-to-day operations, for which it is necessary to use preliminary records of streamflow. The following summaries show comparison of records used in the River Master operations and Geological Survey records. In the com­ parison of releases approximating conservation rates only, data were used in units of million gallons per day and converted to cubic feet per second in the summaries.

Releases from New York City Reservoirs

The River Master operations data on the controlled releases 'from Pepacton, Cannonsville and Neversink Reservoirs, to the Delaware River were obtained from calibrated instruments connected to venturi meters in­ stalled in the outlet conduits.

25

The Geological Survey gaging station on the East Branch Delaware River at Downsville, N.Y., is 0.5 mile downstream from Pepacton Reservoir dam. The discharge shown in table 3 includes releases and spillage from Pepacton Reservoir. It also includes a small amount of seepage, which enters the channel between the dam and gage site and, a small amount of runoff, which originates between the dam and gage site. The drainage area at the dam is 372 square miles.

Releases were made at conservation or other rates by New York City during the year. For flows of approximately 19, 50 and 70 cfs at the gaging station, the venturi meter instruments indicated 0, -0.4 and +1.7 percent difference, respectively, in rates of release from the reservoir than those shown by the gaging-station records.

The Geological Survey gaging station on the West Branch Delaware River at Stilesville, N.Y. is 1.4 miles downstream from Cannonsville Dam. The discharge shown in table 4 includes releases and spillage from Cannonsville Reservoir and the runoff from 2 square miles of drainage area between the dam and the gage site. The drainage area at the dam is 454 square miles, and that at the gaging station is 456 square miles.

Releases were made in a range from conservation to high rates during the year. For flows of approximately 37 and 52 cfs at the gaging station, the venturi meter instruments indicated 7.4 and 12 percent less water, respectively, being released from the reservoir than those shown by the gaging-station records. At flows of approximately 375, 750 and 1,180 cfs, the venturi indicated 8.8, 2.4 and 1.8 percent more discharge respectively, than that shown by the gag ing-station records. The gaging station records are considered good for flows above 750 cfs and fair below.

The Geological Survey gaging station on the Neversink River at Never- sink, N.Y., is 1,650 feet downstream from Neversink Dam. The discharge shown in table 6 includes releases and spillage from Neversink Reservoir and, during storms, a small amount of runoff, which originates between the dam and gage site. The drainage area at the dam is 92.5 square miles and that at the gaging station is 92.6 square miles.

Releases were made at conservation or other low flows by New York City during the year. For flows of approximately 15, 22 and 44 cfs at the Geo­ logical Survey gaging station, the venturi meter instrument indicated +2.7, +13 and +2.9 percent difference, respectively, in rates of release from the reservoir than those shown by the gaging-station records.

The above comparisons indicate good agreement between the data from the venturi meters and U.S. Geological Survey gaging stations at all stations for all ranges of flow except for flows below 700 cfs at Cannons­ ville Reservoir and for flows at the winter augmented rate at Neversink reservoir. The gaging station records are considered only fair at these sites for these ranges of flow. Therefore, the venturi instruments are considered to provide more accurate records.

26

Releases fron Lake Wallenpaupack

In the River Master operations December 1 to November 30, records of daily discharge through the Wallenpaupack powerplant were furnished by the Pennsylvania Power & Light Company (see table 15). Daily discharges were computed on an 0800 to 0800-time basis to allow for the 16-hour average transit time to Msntague.

The records of daily mean discharges for Wallenpaupack Creek at Wilson- ville, Pa., published by the Geological Survey, were also furnished by the Company. These discharges, shown in table 5, represent the flow through the turbines of the powerplant and are computed on a midnight to midnight basis.

During December 1985 through November 1986, the River Master's record based on computations by Pennsylvania Power & Light Company, indicated 0.3 percent less discharge than the Geological Survey record. This dif­ ference was primarily due to the difference in the time frame of the com­ putations.

Delaware River at Montague, N.J.

The River Master's operation record indicated 0.3 percent less dis­ charge for the year than the Geological Survey record, and daily records were generally in good agreement.

Diversion Tunnels

Records of diversions through the East Delaware, West Delaware, and Neversink Tunnels were furnished to the River Master's Office by the City of New York. These records were obtained from New York City's calibrated instruments connected to venturi meters installed in the tunnel conduits. Current-meter measurements were made by the River Master's office to verify the accuracy of the reported diversions. The current-meter measure­ ments were made in the outlet channels downstream from the tunnels.

Water diverted from Pepacton Reservoir discharges through the East Delaware tunnel into Rondout Reservoir. The conditions in the outlet channel, which is used for measuring discharge from the tunnel by current meter were unfavorable for most of the year due to the high water levels in Rondout reservoir. The results of one current-meter measurement made in 1985 and one measurement just after the end of the report year showed on the average that the venturi-meter instnments gave higher figures by 7.5 percent for the totalizer, 7.4 percent for the manometer and 7.4 per­ cent for the indicator needle.

Comparison of the data provided by New York City with discharges ob­ tained from recorded gage-heights and the rating curve for the weir on the outlet channel indicate that the data provided by New York City were accurate.

27

The powerplant that used the water diverted through the tunnel operated most days of the year. On days when the powerplant was not in operation, there was a small amount of leakage through the wicket gates, which was not recorded on the totalizer. Results of a current-meter measurement March 4, 1982, indicated a rate of 10.9 cfs from cooling water and leakage. No measurements of the leakage were made during the year. Discharges ob­ tained from the rating curve indicate that the leakage was approximately the same as when it was last measured.

When the power plant is not operating, the leakage by-passes the venturi instruments and is not measured. When the power plant is operating, the leakage is included in the measured flow. Since the power plant operated on all but 19 days during the year the unmeasured flow is small.

Based upon measurements obtained this year and in previous years, the record of quantity of water diverted through the East Delaware Tunnel should be substantially correct.

The West Delaware Tunnel is used to divert water from Cannonsville Reservoir into Rondout Reservoir. One current-meter measurement made during the year, indicated that the venturi instruments gave higher re­ sults by 7.1 percent for the totalizer, 9.9 percent for the manometer and 13 percent for the indicator needle. 'Inspections of the channel downstream from the outlet, when valves were closed showed negligible leakage.

The results of these measurements and inspections made this year and during past years indicate that the reported record of the quantity of water diverted through the West Delaware Tunnel was substantially correct.

The Neversink Tunnel is used to divert water from Neversink reservoir into Rondout Reservoir. Results of the comparative data showed that the venturi measurements and two current-meter measurements, one in 1985 and one made during the year, agreed fairly well. The average difference be­ tween the two methods showed the venturi higher by 4.9 percent for the totalizer, 8.4 percent for the manometer, and 11.4 percent for the indica­ tor needle.

When the power plant that used the water diverted through the Neversink Tunnel was not in operation, a small amount of leakage occurred that was not recorded on the venturi instruments. Based on two measurements made in January 1987 and numerous measurements made in previous years, the average rate of leakage is 13 cfs (8.4 mgd). When the power plant was operating, the leakage was included in the recorded flow. Based on the above rate and on records of power plant operations, approximately 2.0 billion gallons of water was diverted but was unrecorded. The recorded diversion from Neversink Reservoir was 55.1 billion gallons during the year (see table 13). Therefore this computation indicates the unrecorded diver­ sion was approximately 3.5 percent, which is within the accuracy of the measurements.

28

DIVERSIONS BY NEW JERSEY

According to the terras of the Decree, the State of New Jersey may divert for use outside the Delaware River basin from the Delaware River or its tributaries in New Jersey, without compensating releases, a quantity of water not to exceed 100 mgd (154.7 cfs) as a monthly average, with the diversion on any day not to exceed 120 mgd (185.6 cfs) .

In order to increase the carrying capacity of the Delaware & Raritan Canal, the New Jersey Water Supply Authority began dredging the canal in March 1984. The canal was closed on March 16, 1984 near Washington Crossing, New Jersey and remained closed until December 18, 1985.

In previous years, the diversions through the Delaware & Raritan Canal were measured at the Kingston Lock. In 1986 water was diverted on a regular basis from the canal into Carnegie Lake and into the Millstone River upstream from the gaging station at the Kingston Lock. The New Jersey Water Supply Authority made computations of the amount being diverted on a daily basis and provided the data to the River Master office weekly. Table 12 is a listing of the data provided by the Water Supply Authority.

At the River Master Advisory committee meeting in May 1986 the apparent inadequacy of the current monitoring system was discussed. Fol­ lowing that meeting, the River Master requested New Jersey to improve the monitoring system to provide accurate records of their diversions. In response to the River Master's request, the State of New Jersey began preparations for the installation of an acoustic velocity meter and remote sensing equipment at Port Mercer near the Delaware-Raritan divide. Plans call for the installation to be completed during 1987.

The allowable diversion rate was as specified by the decree for the entire report year. The 30-day average diversion was computed weekly throughout the year to monitor compliance with the terms of the decree. The maximum 30-day average was 92.8 mgd March 31 to April 29. On Feb­ ruary 20 and April 17-18, the records indicate that the maximum daily diversion allowed by the decree was exceeded. However, while the records indicate a flow in the canal of 124 million gallons February 20, 233 mil­ lion gallons on April 17 and 161 million gallons April 18, these values include significant but unmeasured amounts of inflow into the canal from Duck Pond Run in the Raritan River Basin. It is not possible to determine exactly what the diversions on these days were, but they are estimated to have been about 80 mgd.

CONFORMANCE OF OPERATIONS AS PROVIDED UNDER AMENDED DECREE OF THE U.S. SUPREME COURT, DATED JUNE 7, 1954

At the beginning of the report year, operations were being conducted as prescribed by Delaware River Basin Commission Conservation Order No. 8. However, on December 18, conservation measures including reductions in allowable diversions from the basin and rates of flow of the Delaware River at Montague were terminated and operations as prescribed by the Decree were instituted for the remainder of the report year.

29

Diversions from the Delaware River basin to the water-supply system of the City of New York were less than the 800 mgd authorized oy the Decree. Diversions during the period of drought also were less than the permissible rates in effect for that period. Allowable and actual diversions are shown in the following table:

Effective dates

Allowable diversions Equivalent rate not to exceed

(mgd)

Actual diversions

(mgd)Nov. 1 to Dec. 18, 1985 740 708 Dec. 19, 1985 to May 31 , 1986 800 574 June 1 to Nov. 30, 1986 800 743

Under Compensating Releases of the MDntague Formula, the City released water from its reservoirs at rates designed by the River ^fester to maintain 1,700 cfs at MDntague December 1-21, 1,750 cfs December 22 to June 14, and 1,850 cfs June 15 to November 30. New York City complied fully with the directives of the River Master during the year.

Diversions from the Delaware River basin by the State of New Jersey were within the limits prescribed by the Decree.

30

u>

Tab

le 3

. -

Dai

ly d

isch

arge

, in

cub

ic fe

et p

er s

econ

d,

of

Eas

t B

ranc

h D

elaw

are

Riv

er a

t D

owns

vill

e,

N.Y

.(0

1417

000)

fo

r th

e ye

ar e

ndin

g N

ovem

ber

30,

1986

. P

reli

min

ary

U.S

. G

eolo

gica

l S

urve

y re

cord

.Me

an val

ues

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Tota

lMe

an

Dec. 20 21 20 19 19 19 19 19 19 19 19 19 19 19 18 18 18 18 33 50 50 50 51 52 53 50 49 52 49 48 48 977

31.5

Jan. 48 48 49 48 49 49 50 50 50 50 50 50 50 50 50 50 50 50 50 51 51 49 50 51 51 52 53 52 51 50 51

1,553

50.1

Feb. 52 52 49 49 53 51 50 51 51 51 51 51 51 51 51 53 50 52 50 50 50 50 50 51 53 53 55 49

1,430

51.1

Mar. 48 48 49 49 48 49 50 51 55 50 53 53 53 55 69 55 53 51 50 50 50 61 547

926

938

833

772

791

754

706

701

8,11

8262

Apr.

654

564

488

414

374

367

367

319

264

216

188

154

127 98 84 185

114

101 70 69 70 68 69 69 70 70 71 70 70 70

5,91

4197

May 70 70 70 70 70 70 70 70 71 71 72 72 72 72 72 79 78 74 74 74 79 79 894

2,68

02,

550

1,85

01,330

728

398

219

119

12,3

67 399

June 97 77 74 73 74 205

1,130

1,460

1,470

1,100

937

1,06

01,240

1,070

782

557

598

443

279

250

185

100 75 74 76 75 75 74 74 75

13,8

59 462

July 75 76 76 75 75 74 94 112

110

100 81 73 72 72 72 72 84 95 95 95 95 81 72 83 95 95 95 95 95 82 68

2,63

485.0

Aug. 69 70 70 70 70 71 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 84 97 82

2,22

371

.7

Sept.

68 68 68 81 99 87 70 67 68 68 81 100 87 69 70 69 71 72 72 71 70 72 72 71 69 70 69 68 68 68

2,20

373

.4

Oct. 68 68 69 68 68 68 68 68 66 66 66 66 66 67 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 88

2,08

667.3

Nov. 126

126

125

125 90 53 56 55 53 55 58 55 53 54 54 54 57 56 55 54 56 55 55 56 56 57 56 57 58 58

1,97

865

.9Y

ear

tota

l 55

,342

cf

s-day

sM

ean

152

cfs

u»

ro

Tab

le 4

. -

Dai

ly d

isch

arg

e,

in c

ubic

fe

et p

er s

econ

d,

of

Wes

t B

ranc

h D

elaw

are

Riv

er a

t S

tile

svil

le,

N.Y

.(0

1425

000)

fo

r th

e ye

ar e

ndin

g N

ovem

ber

30,

1986

. P

reli

min

ary

U.S

. G

eolo

gica

l S

urve

y re

cord

.M

ean

valu

es

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

To

tal

Mea

n

Dec

.34 35 34 33 32 32 31 31 31 31 31 32 31 31 31 30 30 30 29 35 37 37 37 37 37 37 37 37 36 36 36

1,0

38

33.5

Jan

.36 36 36 36 36 36 36 36 35 36 36 36 36 35 35 35 15

120

1 51 44 41 39 38 37 37 39 38 37 37 37 371,4

36

46

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Feb

.37 37 37 37 38 37 38 37 37 37 37

.

37 37 37 37 37 38 39 40 42 44 44 42 41 52 316

564

747

2,6

03

93.0

Mar.

824

835

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649

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677

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May

197

136 98 63 53 53 53 52 52 52 52 52 52 51 52 52 57 54 56 59 117

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2,2

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1,8

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Jun

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July

340

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455

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580

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350

350

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386

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18,3

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Oct.

441

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495 84 59 64 62 52 48 335

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140

105 57 48 323

289 68 51 252 64 115

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314

161

198

180

199

130

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Nov

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156

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9 67 89 46 48 43 42 41 41 41 40 41 41 41 42 42 62 50 45 46 45 54 61 53 49 47

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Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Tota

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Dec

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530

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1,47

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May

955

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466 0 0 0 0 0 0 0 0 0

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June 0 0 0 0

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27,3

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Aug

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Oct

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Nov

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9

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ay 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Tota

lM

ean

Dec

.15 15 14 15 15 15 15 15 15 15 15 15 14 13 14 14 14 14 18 24 24 24 24 24 23 24 24 23 23 23 23 563

18.2

Jan.

23 23 23 24 24 24 23 23 23 23 22 22 22 22 23 23 22 22 23 23 23 23 23 23 23 24 22 22 22 16 22 700

22.6

Feb. 22 22 21 21 21 21 21 21 21 21 21 21 21 22 21 21 21 21 21 21 21 21 21 21 21 21 21 21 59

121

.1

Mar

.21 21 21 21 21 21 21 22 22 22 22 22 23 24 24 23 22 22 23 22 22 22 22 22 22 22 22 22 22 22 34 694

22.4

Apr

.47 45 44 44 43 43 44 43 42 42 42 43 45 43 43 44 45 45 46 46 44 43 43 43 44 43 43 44 44 43

1,31

343

.8

May 43 43 43 42 43 43 43 43 43 43 44 43 45 45 45 45 45 45 45 45 266

1,03

080

623

5 59 45 45 46 44 42 423,

536

114

June 42 42 42 42 43 43 43 42 42 42 42 43 46 98 91 62 99 50 43 43 43 43 43 43 42 43 43 43 43 43

1,46

949

.0

July

43 43 42 43 43 43 63 87 88 79 60 46 46 45 45 45 55 68 68 68 67 54 45 57 69 71 70 69 68 58 471,

795

57.9

Aug

.47 46 47 45 46 47 47 46 44 45 46 46 46 45 46 46 47 46 47 47 47 46 46 45 47 47 46 43 45 54 70

1,45

847

.0

Sep

t.62 51 51 45 45 48 46 46 46 46 45 52 68 60 46 45 46 46 47 45 46 45 43 43 43 43 43 44 44 43

1,42

347

.4

Oct

.43 44 44 42 43 41 43 45 46 43 43 42 41 42 45 38 38 38 39 39 37 37 37 38 37 37 37 37 37 36 42

1,25

140

.4

Nov

.55 57 59 58 44 20 20 21 21 21 21 21 20 20 19 17 23 18 22 19 22 20 18 19 19 21 21 21 21 21 779

26.0

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r to

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ays

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Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Tota

lM

ean

Dec

.13

,400

16,8

0017

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13,3

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10,0

008,4

70

7,7

70

7,1

80

6,7

70

6,4

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8,2

90

9,0

70

7,9

80

6,4

40

5,9

90

5,8

70

5,4

00

4,8

60

4,4

00

3,8

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3,5

00

3,7

00

4,4

00

3,9

00

3,6

00

4,2

00

3,5

00

3,00

03,

100

3,4

00

217,

370

7,0

12

Jan.

3,1

00

2,5

00

3,0

00

2,8

30

2,1

90

2,1

00

3,1

00

3,2

00

2,8

00

2,1

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2,9

00

1,80

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2,7

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3,0

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2,7

00

2,6

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1,7

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1,8

00

4,0

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13,5

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9,1

60

7,5

00

6,5

00

6,6

30

10,0

009,2

00

7,5

60

6,2

00

6,1

50

144,

920

4,6

75

Feb

.5,3

20

4,1

50

4,5

00

5,3

50

5,2

00

5,2

50

5,1

00

4,3

80

3,2

70

3,5

80

4,4

30

3,7

70

3,8

00

3,8

00

3,4

00

2,3

50

2,5

00

4,4

70

6,5

20

8,2

70

9,6

10

11,7

0011

,000

9,5

10

8,5

80

7,3

20

6,7

10

6,5

30

160,

370

5,7

28

Mar

.6,0

50

5,0

40

4,9

90

5,8

00

5,5

80

5,5

00

5,2

60

4,4

20

3,0

00

3,3

50

5,1

80

7,3

80

9,0

70

12,7

0077

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75,9

00

44,7

00

31 ,

600

29 ,4

004

2,8

00

30,9

00

22,6

00

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0014

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00

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0

550,

710

17,7

60

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r.8,9

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5,5

10

4,9

60

4,8

80

4,6

60

4,4

20

4,1

70

3,9

70

4,7

50

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30

6,6

50

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70

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00

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60

8,7

20

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50

225,

040

7,50

1

May

7,0

00

6,1

00

5,8

60

4,9

70

4,3

00

4,5

00

4,6

40

4,3

60

4,0

40

3,7

70

2,5

00

2,3

70

2,7

60

2,2

10

1,95

0

2,0

50

2,1

10

2,94

02

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02

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0

3,1

20

12,0

0018

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14,5

0012

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008

,94

08

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06,9

60

6,0

60

5,1

50

180,

030

5,8

07

June

3,92

03,6

00

3,40

03

,08

02,6

40

9,8

00

18,2

0014

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13,6

0011

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50

11,5

0019

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15,6

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10,8

0010

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9,4

00

8,0

60

7,11

0

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60

5,3

10

4,8

40

4,4

70

3,98

0

3,5

00

3,3

80

3,2

70

2,32

02

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0

236,

740

7,89

1

Ju

ly2

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00

4,4

10

3,7

30

2,4

10

2,2

10

1,93

02

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02

,84

02,8

20

2,6

40

2,7

30

2,8

00

4,3

20

4,6

00

3,8

70

3,5

70

3,2

30

3,4

00

2,6

10

2,6

40

2,8

30

2,5

90

2,1

00

1,87

0

1,83

02

,08

02

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02

,90

02

,92

05

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0

92

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02,9

96

Aug

.6

,07

05

,39

05

,75

04

,73

04

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0

3,7

80

3,52

05

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04

,65

03,

840

3,2

10

4,2

70

3,7

10

2,7

00

2,2

80

3,2

50

2,1

60

3,1

60

3,9

00

3,2

40

2,7

40

2,6

60

2,5

80

1,80

01,

910

2,73

02

,68

02,3

20

2,1

70

2,1

00

1,4

30

104,

990

3,3

87

Sept.

1,70

01,

660

2,1

00

2,0

20

1,99

0

1,98

01,

990

1,60

01,

930

1,79

0

1,81

01,

790

1,84

01,

960

1,61

0

2,0

20

1,88

01,

950

1,85

02,0

10

2,1

10

1,82

01,

860

1,91

01,

780

1,71

02,0

00

1,80

01,

670

1,98

0

56,1

20

1,87

1

Oct

.2

,26

01,

830

1,92

03,5

40

5,2

50

3,5

40

2,9

10

2,4

00

1,87

01,

930

1,78

01,

470

1,49

01,

800

2,4

10

2,7

70

2,4

40

2,0

90

1,68

01,

620

2,0

00

2,0

70

1,70

02

,04

01,

830

1,71

01,

760

2,2

10

2,0

10

1,71

01

,69

0

67,7

30

2,1

85

Nov

.1,

470

1,48

01,

520

1,74

01,

810

2,0

50

2,2

50

2,4

20

5,1

00

10,7

00

8,0

80

6,6

00

5,7

70

4,8

00

3,91

0

3,41

03,2

90

4,0

40

4,5

70

4,6

00

11,0

0017

,500

11,8

009,7

70

10,9

00

10,3

0023

,400

21 ,

700

14,6

0011

,000

221

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7,3

86

Yea

r to

tal

2,2

58

,49

0 c

fs-d

ays

Mea

n 6,

188

cfs

Tab

le 8

. -

Dai

ly d

isch

arg

e,

(014

6350

0)

for

in c

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fe

et p

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econ

d,

of D

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are

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N.J

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ndin

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ber

30,

1986

. P

reli

min

ary

U.S

. G

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gica

l S

urve

y re

cord

.M

ean

valu

es

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Tota

lM

ean

Dec

.33,6

00

33,6

00

36,5

0033

,100

26,9

00

23,3

0021

,00

018

,300

16,7

0015

,800

15,0

0015

,300

17,5

0018

,500

17,1

00

14,6

0013

,500

13,0

0011

,900

10,5

00

9,9

50

10,1

009,7

10

11,0

0011

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10,1

008,8

30

8,3

40

8,2

60

6,9

50

6,8

20

507,

660

16,3

80

Jan.

7,2

40

7,3

10

6,6

40

7,1

70

7,4

00

6,6

00

5,8

10

5,6

40

4,9

90

5,2

50

5,5

50

5,4

30

5,3

40

4,9

00

4,1

00

3,9

00

3,9

50

4,9

70

5,3

40

7,7

20

14,6

002

4,6

00

18,8

0015

,700

13,5

00

28,7

00

30,6

00

26,7

00

21 ,

400

16,5

0014

,900

341

,250

11,0

10

Feb

.13

,700

12,5

0013

,600

13,3

0014

,500

15,9

0014

,800

13,2

0012

,200

10,5

00

9,8

20

10,5

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,32

08

,53

08

,65

0

8,8

60

7,4

60

9,6

50

22,2

0025

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26,9

0031

,70

028

,300

24,6

0021

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0

18,9

0016

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14,9

00

437,9

90

15,6

40

Mar

.14

,000

13,3

0011

,800

11,4

0012

,100

12,0

0011

,600

10,8

009,7

90

8,4

70

9,0

80

15,0

0018

,300

25,2

0053,6

00

128,

000

92,9

00

64,8

00

51,1

00

49 ,2

00

54,2

0041

,50

033

,200

27,9

00

24,3

00

22,1

0020,1

00

19,5

0019

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18,0

0016

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91

9,2

40

29,6

50

Ap

r.15

,800

14,9

0013

,900

13,0

0012

,300

12,0

0011

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12,3

0012

,400

10,9

00

9,9

90

9,6

40

9,2

60

8,8

30

8,5

00

13,2

0030

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36,8

0033

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25,6

00

21 ,

200

19,5

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022

,000

21 ,

800

25,6

0025

,400

22,2

0020

,200

18,9

00

532,

020

17,7

30

May

17,0

0015

,200

13,7

0012

,800

11,8

00

11,0

0010

,200

10,4

0010

,100

9,3

20

8,8

80

7,6

00

6,9

60

6,9

10

6,3

60

6,0

30

5,9

30

6,0

10

6,0

30

6,8

80

6,7

90

9,4

00

21,1

0026

,700

20,9

00

17,8

0015

,300

13,5

0012

,500

11,0

009

,91

0

354,

010

1 1 ,

420

June

9,1

90

7,4

90

6,9

40

6,4

80

6,0

50

5,7

70

14,1

0026

,100

22,4

0020

,400

16,6

0014

,700

19,9

0028

,600

23,4

00

19,0

0016

,500

15,1

0014

,200

12,6

00

11,4

0010

,400

9,3

70

8,3

90

7,5

90

7,2

40

6,5

70

6,1

50

6,0

00

5,3

00

383,

930

12,8

00

Ju

ly4,7

40

5,1

90

6,3

80

6,9

10

6,9

60

5,5

60

4,8

70

4,5

30

4,4

80

5,1

40

5,1

90

4,8

60

5,2

50

5,5

00

5,9

90

7,35

06,5

90

5,9

30

6,3

10

7,3

40

7,2

10

6,0

70

5,2

20

5,0

10

4,5

80

4,0

20

6,1

10

5,1

40

4,9

00

5,5

40

6,6

20

175,

490

5,66

1

Aug

.11

,000

10,7

0017

,700

16,7

0012

,600

10,7

008,9

30

7,44

08

,62

08

,04

0

8,0

80

6,4

60

6,6

90

6,6

00

5,3

40

4,8

90

4,9

10

6,2

60

5,9

70

6,9

20

6,5

00

6,6

40

6,8

30

6,3

30

5,9

00

5,0

10

4,9

70

5,0

50

4,7

10

4,3

30

4,1

20

234,

640

7,5

69

Sept.

3,8

30

3,2

30

3,4

00

3,4

20

3,7

10

4,8

90

4,7

00

4,0

60

3,8

00

3,4

40

3,5

70

3,4

10

3,2

90

3,1

80

3,2

50

3,32

03

,05

03

,35

03,2

90

3,3

20

3,3

40

3,6

90

3,5

80

3,6

20

3,7

30

3,6

50

3,6

20

4,0

10

4,4

10

4,0

10

109,

170

3,6

39

Oct

.3

,77

03

,84

03,9

80

3,8

40

4,6

60

7,6

60

7,0

20

5,5

40

4,7

30

4,1

20

3,6

50

3,5

20

3,4

00

3,2

10

3,4

30

3,8

10

4,4

60

4,4

90

4,1

30

3,8

90

3,3

00

3,2

70

3,4

50

3,3

30

3,1

00

3,6

70

3,5

70

3,6

00

3,7

50

4,0

90

3,7

30

126,

010

4,0

65

Nov

.3,3

10

3,53

03,3

10

3,03

03,

100

3,94

04,6

90

5,0

30

5,9

20

7,20

0

14,5

0014

,500

12,0

0010

,400

9,0

80

7,7

60

6,8

80

6,5

10

9,4

10

10,5

00

20,3

0028

,500

29,7

0022

,000

18,8

00

22,3

0029

,600

39,2

0033

,000

24,7

00

412,7

00

13,7

60

Yea

r to

tal

4,53

4,11

0 cf

s-day

sM

ean

12,4

20 cf

s

Tab

le 9

. -

Sto

rage

in

Pep

acto

n R

eser

vo

ir,

N.Y

., fo

r ye

ar e

ndin

g N

ovem

ber

30,

1986

(Sto

rage

in

mil

lio

ns

of

gal

lon

s ab

ove

elev

atio

n 1

,152

.00

ft.

Add

7,7

11

mil

lion g

allo

ns

for

tota

l co

nten

ts

abov

e sil

l o

f outl

et

tunn

el,

elev

atio

n 1

,126

.50

ft.)

S

tora

ge a

t sp

illw

ay l

evel

is

14

0,19

0 m

illi

on

gal

lon

s.(R

iver

Mas

ter

dai

ly o

per

atio

ns

reco

rd;

gage

rea

ding

at

0800

)Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

oo

16^

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31Change

Equi

v.Eq

uiv.

Dec.

83,164

84,2

7285,726

86,8

9487,652

88,302

88,7

7989

,403

89,9

5790

,219

90,4

9690,9

6791

,364

91,7

4792,2

2092

,665

92,8

8893

,052

93,1

2693

,185

93,2

4593,542

93,8

1293

,872

93,9

0193

,797

93,7

2293

,677

93,6

1793

,677

93,587

+11,

258

mgd +3

63.2

cfs

+562

Jan.

93,5

2793,438

93,3

1993

,259

93,200

93,0

9692

,962

92,7

9992,651

92,4

8792

,383

92,235

92,101

91 ,95

391

,732

91 ,57

091 ,394

91 ,26

190

,952

91,7

1892

,903

93,647

94,246

94,6

0694

,935

95,6

9096

,521

96,9

6397

,268

97,5

2797

,710

+4,1

23+1

33.0

+206

Feb.

97,983

98,1

3898

,276

98,3

6898

,506

98,7

3798,814

98,921

98,983

99,014

99,0

4499

,014

98,998

98,9

5298,921

98,8

6098,845

98,8

7599,060

99,0

56100,001

101,445

102,

414

103,

184

103,815

104,240

104,574

104,891

+7,181

+256

.5+397

Mar.

105,

129

105,288

105,

447

105,542

105,638

105,

717

105,765

105,733

105,

717

105,685

106,

164

107,380

107,

992

109,283

118,

260

126,639

129,589

131 ,4

8813

2,91

6136,345

138,443

139,

859

140,

764

141 ,0

7914

1,11

614

1 ,0

7914

1 ,024

141 ,0

4214

1 ,0

24140,987

140,

968

+36,077

+1,1

64+1,180

Apr.

140,391

140,894

140,

839

140,727

140,

727

140,672

140,672

140,

616

140,

560

140,505

140,468

140,

412

140,

394

140,301

140,246

140,

301

140,

227

140,

264

140,135

139,969

139,

767

139,

712

139,

675

139,583

139,

638

139,675

139,

749

139,914

139,951

139,987

-981

-32.7

-50.

6Change f

or y

ear +30,234 mi

llio

n ga

llons

May

139,987

139,

969

139,969

139,

712

139,583

139,399

139,215

139,

031

138,

774

138,

572

138,

278

137,

986

137,676

137,366

137,

001

136,

709

136,690

136,581

136,345

136,

164

136,290

137,712

140,635

141,

857

141,

765

141,

506

141,301

140,876

140,616

140,430

140,

264

+277

+8.94

+13.

8Eq

uiv.

fo

r

June

140,227

140,

135

139,

969

139,

712

139,

528

140,

061

141 ,0

24141 ,2

46141,357

141,

116

140,

950

141 ,0

4214

1,26

5141,116

140,

894

140,690

140,

783

140,598

140,486

140,449

140,

357

140,

209

140,061

139,877

139,

657

139,

418

139,

142

138,

848

138,

627

138,

296

-1,9

68-6

5.6

-101

year +82

July

137,931

137,

676

137,439

137,

092

136,745

136,

363

135,

982

135,

566

135,

149

134,

714

134,

247

134,

067

133,

995

133,977

133,

743

133,

437

133,078

132,

720

132,

345

131,

952

131,

595

131,

220

130,

794

130,387

129,

979

129,518

129,

306

129,

095

129,

625

130,156

132,

273

-6,0

23-194.3

-301

.8 m

gd

Aug.

133,312

134,

049

134,480

134,

660

134,678

134,624

134,823

134,

805

134,732

134,

588

134,

480

134,

229

134,

013

133,

725

133,

419

133,204

132,

970

132,

702

132,

381

132,

059

131,

702

131,345

130,

972

130,

617

130,263

129,873

129,483

129,

095

128,

902

128,655

128,251

-4,022

-129.7

-201

Sept.

127,811

127,

390

126,

954

126,

534

126,098

125,

697

125,

263

124,847

124,

413

123,963

123,

515

123,067

122,619

122,

173

121,728

121 ,3

0012

0,85

5120,446

119,

970

119,563

119,

087

118,648

118,243

117,

906

117,468

117,148

116,680

116,278

115,

876

115,

459

-12,

792

-426

.4-6

60

Equiv. for

Oct.

Nov.

115,060

103,

957

114,662

103,531

114,

246

103,

074

114,

246

102,680

114,

014

102,

227

113,

700

101,

961

113,

305

101,

695

112,959

101,

383

112,

530

101,461

112,

152

101,

961

111,760

102,164

111,

318

102,

274

110,925

102,383

110,

631

102,289

110,

371

102,

211

110,014

102,070

109,

657

101,

961

109,

267

101,

805

108,

879

101,742

108,

476

101,

539

108,

105

102,

508

107,

718

103,

594

107,

332

104,209

106,

948

104,

812

106,

564

105,574

106,

164

106,

116

105,

860

108,

701

105,

479

110,

680

105,145

111,

842

104,732

112,563

104,

383

-11,076

+8,1

80-357.3

+272

.7-5

53

+422

year

+12

8.1

cfs

Table

10.

- St

orag

e in

Can

nons

vill

e Reservoir, N.Y.,

for

year e

ndin

g No

vemb

er 3

0, 1986

(Storage i

n mi

llio

ns o

f ga

llon

s above

elevation

1,04

0.00

ft.

Add

2,584 mi

llio

n ga

llon

s for

tota

l co

nten

ts

abov

e sill o

f outlet t

unnel, elevation

1,02

0.50

ft.

) Storage

at s

pillway

leve

l is

95,

706

mill

ion

gall

ons.

(Riv

er Master

dail

y operations r

ecord; ga

ge r

eading a

t 0800)

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Change

Equi

v.Equiv.

Dec.

71 ,066

71 ,821

73,0

7973,901

74,561

75,0

5875,472

75,7

0775,901

75,970

76,0

5376

,315

76,702

76,951

77,0

75

77,103

77,2

0077

,227

77,0

8976

,923

76,7

5876

,619

76,4

4076,288

76,288

76,1

7775,970

75,7

6375

,624

75,4

3175,251

+4,755

mgd

+153.4

cfs

+237

Jan.

Fe

b.75,030

81,625

74,8

51

82,146

74,7

27

82,5

7974

,658

83,027

74,575

83,504

74,4

78

83,9

9574

,326

84

,487

74,1

33

84,8

6373

,967

85

,224

73,8

08

85,571

73,6

49

85,8

8973

,530

85,990

73,3

71

86,0

4873

,238

86

,077

73,0

13

86,2

79

72,8

14

86,539

72,6

29

86,7

8572

,285

87,031

72,139

87,4

6472,725

88,161

74,5

88

89,4

6975

,763

91,386

76,6

75

93,0

1477,324

94,3

2277

,711

95,341

78,180

96,4

1479

,037

96,864

79,742

97,1

2280

,225

80,6

9481,177

+5,926 +

15,945

+191

.2

+569.5

+296

+881

Mar.

97,251

97,2

9997,267

97,2

0297

,122

97,0

7497,009

96,9

2996

,832

96,832

96,9

4598,249

98,2

6598,684

102,916

106,

705

103,

753

101,

677

100,743

101,532

101,017

100,

325

99,6

8199

,215

98,8

2898

,506

98,345

98,2

9798,184

98,0

5697

,975

+853

+27.

5+42.6

Apr.

97,8

4697,701

97,5

8997

,283

97,218

97,2

3597

,170

97,1

0697

,090

97,0

74

97,041

97,0

4196,993

96,9

2996,832

96,8

9797

,009

97,0

2597

,074

97,0

74

97,041

97,0

4197

,058

97,0

5897,186

97,1

3897

,025

96,993

96,7

3696,478

-1 ,49

7-4

9.9

-77.

2

May

96,2

3796

,012

95,8

0395

,630

95,3

8795

,158

95,1

2895

,143

95,1

5895

,174

95,1

7495,158

95,113

95,0

6795

,006

94,9

4695

,143

95,2

3495

,250

95,4

02

95,7

5496,993

98,2

0098

,700

98,651

98,4

4298

,104

97,8

3097,589

97,363

97,1

86+7

08+22.8

+35.

3

June

97,090

97,058

96,8

3296,591

96,2

5396,494

97,492

98,2

6598

,539

98,4

26

98,184

97,959

98,0

8898

,120

97,911

97,573

97,4

2897,315

96,9

2996

,687

96,591

96,366

96,157

95,9

4795,835

95,6

6095

,417

95,280

95,1

2894,915

-2,2

71-75.7

-117

July

94,6

5794,444

94,2

7694

,033

93,729

93,4

5593

,090

92,847

92,4

3692

,055

91 ,58

391

,24

991

,157

91 ,32

591

,29

4

91,127

90,868

90,6

2590

,366

89,940

89,621

89,302

88,9

9788,632

88,2

6787,782

87,4

7987,161

86,886

86,8

2887,161

-7,7

54-2

50-3

87

Aug.

87,5

8088

,013

88,3

2888,724

88,754

88,6

4888

,997

89,0

8989

,286

89,454

89,621

89,7

5889

,819

89,8

1989,804

89,8

0489

,819

89,8

3489

,956

90,0

77

90,1

8490,321

90,3

9790

,503

90,5

1890

,564

90,6

1090

,686

90,625

90,0

7789

,545

+2,3

84+76.9

+119

Sept.

89,1

0488,967

88,8

3088

,587

88,0

8687,406

87,1

3287

,031

86,8

7286

,655

86,4

2485,846

85,0

6584

,501

84,1

40

83,7

3583,302

82,6

8081,987

80,9

61

80,1

7079

,410

78,5

8178,111

77,531

76,8

9676,550

75,901

75,3

8974

,809

-14,

736

-491

-760

Oct.

74,3

2674

,008

73,4

9073

,622

73,8

3473,954

73,981

73,9

6773,940

73,8

08

73,4

7773

,265

73,1

4673

,026

72,973

72,934

72,801

72,470

72,3

2472,232

72,073

71 ,88

771

,74

271 ,46

471 ,02

670

,748

70,6

5670

,536

70,311

70,2

0569

,993

-4,8

16-155

-240

Nov.

69,675

69,384

68,9

4768

,550

68,060

67,993

68,0

4668

,139

68,5

3669,371

69,980

70,4

7070

,920

71 ,27

271

,517

71,7

2871 ,967

72,126

72,4

3072

,629

73,4

9075

,707

76,937

78,0

8379

,576

80,6

9483,865

86,8

4388,572

89,9

25

+19,

932

+664

.4+1

,030

Change f

or year +19,429 million

gallons

Equi

v. fo

r year +53.2 mgd

Equiv. for

year 82.3

cfs

U)

v£>

Tab

le 1

1.

- S

tora

ge

in N

ever

sink

Res

ervo

ir,

N.Y

. fo

r ye

ar e

ndin

g N

ovem

ber

30,

1986

(Sto

rage

in

mil

lions

of

gal

lons

abov

e el

evat

ion 1

,319

.00.

A

dd 5

25 m

illi

on g

allo

ns

for

tota

l co

nte

nts

abov

e sil

l of

ou

tlet

tu

nn

el,

elev

atio

n 1

,314

.00

ft.)

S

tora

ge a

t sp

illw

ay l

evel

is

34,

941

mil

lion g

allo

ns.

(Riv

er M

aste

r dai

ly o

per

atio

n r

ecor

d;

gage

rea

ding

at

0800

)Da

y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Chan

geEq

uiv.

mg

dEq

uiv.

cfs

Dec.

26,659

27,005

27,507

27,732

27,883

28,0

1428,097

28,167

28,2

4128

,285

28,315

28,4

2028

,522

28,610

28,6

23

28,628

28,636

28,6

3628,601

28,5

53

28,526

28,5

0028,478

28,4

4228,407

28,3

8128,311

28,267

28,2

0228,145

28 ,080

+1,5

44+4

9.8

+77.1

Jan.

28,0

1827

,953

28,005

27,831

27,7

7927

,719

27,6

3227

,537

27,434

27,3

56

27,288

27,2

0227

,129

27,0

4326

,936

26,842

26,736

26,6

5026

,566

26,6

93

27,0

3427,163

27,227

27,2

3627,223

27,2

9227,442

27,5

1627,498

27,4

9427 ,464

-616

-19.9

-30.7

Feb.

27,438

27,4

3027,399

27,369

27,365

27,3

7427

,344

27,3

1827,275

27,219

27,172

27,1

2027

,051

26,979

26,9

11

26,851

26,778

26,7

4826

,753

26,7

87

26,795

26,9

8727

,077

27,1

0727

,129

27,116

27,0

8127,073

-391

-14.0

-21.6

Mar.

27,0

5627

,022

26,9

9226,966

26,928

26,889

26,8

4726,791

26,7

1426,655

26,6

2526

,625

26,5

9526

,659

28,6

23

30,254

30,7

6731

,081

31,392

33,2

11

33,727

34,159

34,394

34,5

7134,438

34,2

9634

,282

34,321

34,2

8234,292

34,2

82

+7,209

+232

.5+360

Apr.

34,218

34,0

8633,901

33,693

33,480

33,230

33,0

7232,843

32,6

9032

,648

32,5

7632

,510

32,410

32,3

5932

,245

32,1

7432

,264

32,307

32,2

7832,259

32,2

2632

,278

32,302

32,316

32,3

87

32,5

0532

,614

32,662

32,8

4333,005

-1,2

77-4

2.6

-65.9

May

33,139

33,2

7333,379

33,4

8533

,577

33,6

6933,761

33,838

33,911

33,974

34,0

2734

,076

34,130

34,174

34,213

34,257

34,340

34,4

2834

,478

34,522

34,9

7635

,234

35,294

35,115

34,9

66

34,7

8334,561

34,2

5734,003

33,702

33,3

74+3

69+1

1.9

+18.

4

June

33,120

32,8

9532

,966

33,0

4333

,105

33,3

1733

,528

33,7

5133

,920

34,023

34,115

34,282

34,7

8335

,040

35,040

35,0

1634,996

34,8

9234

,714

34,5

47

34,2

8734

,086

33,862

33,7

9433,722

33,6

3033

,538

33,451

33,3

7933,293 -81

-2.70

-4.18

July

33,1

9233

,115

33,1

3433

,048

32,9

47

32,838

32,714

32,5

5732

,410

32,2

64

32,1

0431 ,98

631

,916

31 ,82

731

,728

31 ,606

31 ,47

131

,336

31,1

8731

,025

30,892

30,7

2130

,615

30,4

2830,268

30,1

0430

,050

29,9

2829,796

29,6

4329

,518

-3,775

-121.8

-188

Aug.

29,569

29,262

29,1

3729,013

28,857

28,7

0228

,755

28,764

28,6

8528,588

28,508

28,4

3828,315

28,197

28,0

71

27,944

27,818

27,8

4027,766

27,6

54

27,5

2827

,417

27,288

27,172

27,0

26

26,889

26,740

26,595

26 ,45

226

,308

26,1

44

-3,3

74-108.8

-168

Sept

.25,967

25,816

25,649

25,495

25,345

25,263

25,1

4325,006

24,867

24,7

11

24,5

5924,397

24,230

24,0

5223

,874

23,685

23,545

23,3

8923,218

23,0

67

22,902

22,752

22,599

22,4

7422

,326

22,182

22,031

21,872

21,715

21 ,554

-4,5

90-153

-237

Oct.

21 ,40

121 ,291

21,146

21,2

1121

,215

21,1

3121 ,006

20,885

20,738

20,6

26

20,4

7320,342

20,153

20,039

19,968

19,869

19,767

19,646

19,525

19,380

19,250

19,123

18,990

18,839

18,693

18,5

5118

,448

18,331

18,208

18,071

17,9

35-3,619

-116

.7-1

81

Nov.

17,781

17,643

17,4

7317

,312

17,1

5517,059

16,988

16,917

16,9

9517,196

17,2

5717,281

17,278

17,233

17,165

17,1

0717,053

17,0

5316,992

16,9

17

17,244

17,6

1517

,757

17,830

17,994

18,109

19,584

20,183

20,465

20,633

+2,6

98+89.9

+139

Cha

nge

for

year

-5,

903

mil

lion g

allo

ns

Equ

iv.

for

year

-16

.2 m

gd

Equ

iv.

for

year

25.

0 cf

s

Tabl

e 12

. -

Dive

rsio

ns b

y New Jersey t

hrou

gh t

heDe

lawa

re &

Raritan Can

al in

million g

allons

Reco

rd f

urnished b

y New Jersey Wat

er S

uppl

y Au

thor

ity

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

December 1

985

Carn

egie

Was

Lake

ge3te

King

ston

ite

Lock

Cana

l op

ened

December

18

38 42 42 20 -9 -16 14 16 7 9 12 16 16 15

0 0 0 36 45 47 45 53 58 53 62 67 65 64

Daily

Tota

l

, 19

85 38 42 42 56 36 31 59 69 65 62 74 83 81 79

Janu

ary

1986

Carn

egie

Was

Lake

gc

16 16 16 21 14 23 21 22 13 21 22 23 23 23 14 19 19 20 21 19 23 31 0 0 0 0 0 0 0 0 0

ste

Kingston

ite

Lock 65 66 65 67 68 68 63 59 54 65 68 66 67 65 63 64 65 67 67 67 0 13 73 73 70 67 76 63 71 71 80

Daily

Ca

Tota

l81 82 81 88 82 91 84 93 75 86 90 89 90 100 77 83 84 87 88 86 23 44 73 73 70 67 76 63 71 71 80

February

rneg

ie Waste

Lake

ga

te 28 51 23 38 50 13 0 0 0 26 54 25 0 0 0 37 68 75 109

124 84 0 26 27 39 34 14 0

Kingston

Lock 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 65 80 78 77 75 76 74

Dail

y Total

28 51 23 38 50 13 0 0 0 26 54 25 0 0 0 37 68 75 109

124

104 65 106

105

116

109 90 74

Table

12.

- Di

vers

ions

by New Jersey t

hrough the

Dela

ware

& Rar

itan

Can

al in mil

lion

gal Ion

s-co

ntinued

Record f

urni

shed

by New Jersey Water S

upply Au

thor

ity

Day

March

Carn

egie

La

keWa

ste

gate

King

ston

Lo

ckDa

ily

Tota

l

April

Carnegie

Lake

Wast

e gate

King

ston

Lock

Daily

Tota

l

May

Carnegie

Lake

Wast

e gate

Kingston

Lock

Daily

Total

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

0 0 0 0 0 0 0 0 0 0 0 0 18 29 29 29 29 29 29 29 29 26 16 12 5 0 0 0 0 0 0

74 65 65 66 63 58 50 53 56 58 61 62 63 63 66 65 65 63 62 62 62 62 63 63 63 75 75 75 75 74 73

74 65 65 66 63 58 50 53 56 58 61 62 81 92 95 94 94 92 91 91 91 88 79 75 68 75 75 75 75 74 73

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25 130 76 34 14 0 0 0 0 0 0 0 0 0 0

84 82 82 80 79 98 95 98 81 81 81 81 81 81 79 85 103 85 86 89 91 64 69 84 83 79 88 86 76 48

84 82 82 80 79 98 95 98 81 81 81 81 81 81 79 110

233

161

120

103 91 64 69 84 83 79 88 86 76 48

Note:

Canal

clos

ed Apr

il 2

9, flow Apr

il 3

0 is

fr

om s

torage,

Table

12.

- Di

vers

ions

by New Jersey th

roug

h the

Dela

ware

& Raritan C

anal in million g

al Ions-continued

Record f

urnished b

y New Jersey Water S

uppl

y Auth

ority

June

Day

Carn

egie

Wa

ste

Lake

gate

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

i Kingston Da

ily

Carnegie

Lock

Total

Lake

July

Wast

e J

ate

Kingston

Lock

Daily

Ca

Total

]

Canal

reopened July

15

26 32 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 44 44 33 23 19 12 12 0 0 0 0 0 28 5 0 24

0 0 21 26 30 35 63 59 58 61 61 55 51 55 49 46 45

26 76 78 59 53 54 75 71 58 61 61 55 51 83 54 46 69

August

rnegie Waste

l,ak

e ga

te 24 12 24 11 29 49 49 49 24 24 12 25 31 12 3 0 0 0 0 0 0 10 18 9 12 12 12 4 0 0 0

King

ston

Lock 48 49 48 48 20 0 0 0 23 33 44 43 41 41 55 52 53 54 55 55 55 56 55 56 56 56 55 55 55 55 55

Daily

Tota

l72 61 72 59 49 49 49 49 47 57 56 68 72 53 58 52 53 54 55 55 55 66 73 65 68 68 67 59 55 55 55

Table

12.

- Di

vers

ions

by New Jersey t

hrou

gh th

e De

lawa

re &

Raritan C

anal in

mil

lion

gal

Ions

-con

tinu

ed

Reco

rd f

urnished b

y New Jersey Wat

er S

uppl

y Au

thor

ity

Day

Cam eg

i La

ke1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

September

.e Waste

Kingston

gate

Lock 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 56 56 56 56 56 57 57 56 56 56 56 57 57 56 56

Dail

y To

tal

55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 56 56 56 56 56 57 57 56 56 56 56 57 57 56 56

Octo

ber

Carn

egie

Wa

* La

ke

g<0 0 0 0 0 0 0 13 22 27 30 29 29 31 30 29 35 32 36 37 40 43 43 42 40 41 41 41 37 35 36

ste

Kingstonl

Daily

ate

Lock

| Total

56

5656

5654

54

53

5356

56

55

5555

5555

6853

7552

79

52

8252

8152

8152

8352

82

53

8251

86

51

8351

8752

89

53

9352

9552

9552

9452

92

52

9352

9352

9352

8950

85

50

86

Nove

mber

Carn

egie

La

ke 34 35 33 35 34 42 39 40 40 41 35 45 38 29 28 25 21 25 41 46 40 39 39 34 32 30 39 43 43 34

Wast

e gate 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 24 10 0 0 0 4 12 5 0 0

Kingston

Lock 50 50 50 50 50 52 52 53 54 59 55 58 57 56 55 53 53 55 47 46 40 39 58 58 56 56 48 55 55 53

Daily

Total

84 86 83 85 84 94 91 93 94 100 90 103 95 85 83 78 74 80 88 101

112 88 97 92 88 90 99 103 98 87

Tab

le 1

3.

- D

iver

sion

s to

New

Yor

k C

ity

wat

er s

uppl

yM

illi

on g

allo

ns p

er d

ay f

or 2

4-ho

ur p

erio

d be

ginn

ing

0900

lo

cal

time

(Riv

er M

aste

r dai

ly o

pera

tion

rec

ord)

Date

Ea

st

West

Never-

Aver

age

to d

ate

Date

East

Dela

ware

Delaware

sink

Nov. 1,

19

85 to

Dec. 18

Delaware

1985

Tunn

el

Tunn

el

Tunnel

or D

ec.

19-31, 19

85

1986

Tu

nnel

Dec.

1 0

494

152

683

Jan.

1

240

2 0

495

113

681

2 244

3 9

496

116

679

3 23

94

260

496

110

685

4 238

5 243

496

119

690

5 238

6 24

5 49

6 115

694

6 24

47

0 497

119

692

7 24

48

0 497

106

690

8 24

59

245

497

116

694

9 24

310

187

497

113

697

10

241

11

195

497

113

699

11

241

12

189

478

113

701

12

244

13

193

497

116

704

13

244

14

0 497

117

702

14

244

15

0 49

7 12

5 700

15

245

16

208

497

124

703

16

243

17

208

498

123

705

17

245

18

209

496

119

708

18

433

19

209

497

119

825

19

5620

20

5 497

122

824

20

244

21

0 49

7 113

753

21

245

22

0 497

114

718

22

244

23

189

496

124

736

23

243

24

275

407

115

746

24

244

25

312

402

115

758

25

246

26

260

402

115

760

26

246

27 '240

403

112

760

27

241

28

240

402

123

760

28

239

29

111

402

130

750

29

244

30

236

402

114

750

30

244

31

234

402

123

750

31

239

West

Ne

ver-

Average

to d

ate

Delaware

sink

Dec. 19

, 1985

Tunn

el

Tunn

el

to date

402

115

751

316

0 73

829

0 24

1 740

290

117

735

289

115

729

289

116

725

289

120

722

289

125

719

289

124

716

289

116

713

289

118

710

288

110

707

288

118

705

289

120

703

288

116

701

288

125

700

288

118

698

288

123

703

288

120

695

289

118

694

289

116

693

290

118

692

290

116

690

290

123

689

290

121

689

290

120

688

59

119

681

0 123

673

0 113

666

0 12

7 65

90

132

652

Tot

al4,

902

14,6

243,

668

7,5

30

7,71

33,

703

Table

13.

- Di

vers

ions

to

New

Yor

k City water s

uppl

y -

continued

Mill

ion

gallons

per

day

for 24-hour

peri

od b

eginning 0900

loca

l ti

me

(Riv

er M

aster

daily

oper

atio

n re

cord

)

Date

East

Delaware

1 986

Tunnel

Feb.

1

239

2 238

3 244

4 24

55

243

6 245

7 245

8 24

59

244

10

247

11

239

12

239

13

242

14

247

15

246

16

246

17

246

18

244

19

244

20

244

21

244

22

244

23

243

24

243

25

245

26

244

27

245

28

244

West

Dela

ware

Tunnel 0 0 0 0 0 0 0 0 0 0

187

187

186 39 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Never-

sink

Tunn

el12

812

310

9118

117

126

119

119

121

121

117

124

115

123

124

124

115

126

116

122

124

122

124

119

116

127

113

115

Aver

age

to d

ate

Date

Ea

st

Dec.

19,

1985

De

lawa

re

to d

ate

1986

Tunn

el646

Mar.

1 244

640

2 244

634

3 245

628

4 245

623

5 24

7

618

6 245

613

7 26

060

8 8

261

603

9 265

599

10

186

598

11

245

597

12

254

596

13

244

593

14

239

589

15

238

585

16

238

582

17

240

578

18

244

575

19

244

572

20

244

568

21

252

565

22

245

562

23

242

559

24

245

557

25

243

554

26

245

551

27

245

548

28

247

29

248

30

248

31

243

West

Never-

Aver

age

to d

ate

Dela

ware

sink

Dec.

19

, 1985

Tunn

el

Tunn

el

to date

0 116

546

0 12

0 543

0 113

541

0 11

6 539

0 114

536

0 12

5 534

0 119

532

0 12

0 53

00

119

529

138

117

527

189

128

528

181

128

528

181

118

528

37

120

527

0 120

525

0 120

523

0 11

4 52

10

114

519

0 114

518

0 253

517

0 0

515

0 11

0 513

0 104

511

0 39

1 512

0 403

514

0 38

1 515

0 38

4 51

60

403

517

0 35

8 518

0 39

2 51

90

370

520

Tota

l 6,

824

599

3,36

77,

575

726

5,80

4

Table

13.

- Diversions to

New

Yor

k City w

ater s

uppl

y -

continued

Mill

ion

gallons

per

day

for 24

-hou

r pe

riod

beg

inni

ng 0

900

loca

l time

(Riv

er M

aster

daily

oper

atio

n record)

Date

East

Delaware

1986

Tunn

elAp

r.

1 24

42

243

3 243

4 241

5 24

16

240

7 24

58

258

9 301

10

299

11

303

12

303

13

304

14

300

15

294

16

299

17

297

18

452

19

452

20

452

21

450

22

450

23

450

24

450

25

451

26

433

27

451

28

452

29

450

30

449

West

Dela

ware

Tu

nnel 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

163

178

185

406

497

498

Neve

r-

sink

Tu

nnel

380

408

380

388

434

365

414

328

187

203

199

202

157

208

195

146

148

159

137

161

146

157

156

142

148

157

153 0 0 0

Aver

age

to d

ate

D<

Dec. 19

, 19

85

to d

ate

1<

ate

East

Dela

ware

?8

6 Tunnel

521

May

1 449

523

524

525

526

527

528

528

528

528

528

527

527

527

526

526

525

526

526

527

527

528

529

529

531

533

535

537

540

543

2 450

3 450

4 45

15

452

6 44

97

450

8 44

99

449

10

449

11

447

12

458

13

462

14

452

15

445

16

451

17

451

18

451

19

463

20

445

21

451

22

449

23

5624

0

25

026

027

413

28

450

29

450

30

449

31

410

West

Ne\

Dela

ware

si

Tunn

el

Tur

498

498

497

497

497

301

210

181

181

181

180

181

180

181

180

181

180

180

180

180

rer-

Average

to d

ate

.nk

Dec. 19

, 1985

mel

to d

ate

0 54

60

549

0 55

20

555

0 55

80

559

0 560

0 56

10

561

0 562

0 562

0 563

0 563

0 564

0 564

0 565

0 56

50

565

0 566

0 56

68

377

568

0 414

570

0 365

569

0 39

1 568

0 41

5 56

70

403

566

0 455

568

0 385

569

0 41

1 57

10

420

573

0 393

574

Tota

l 10,497

1,927

6,25

812

,151

5,35

24,

429

Table

13.

- Diversions to

New

Yor

k City water s

uppl

y -

cont

inue

d Mi

llio

n gall

ons

per

day

for 24-hour

peri

od b

eginning 0

900

loca

l ti

me

(Riv

er Mas

ter

daily

operation

reco

rd)

Date

1986

June

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Total

East

Dela

ware

Tunnel

448

450

450

407

400

400

399

400

400

399

443

452

450

450

450

450

450

450

450

450

450

451

449

450

449

450

449

451

451

451

13,1

49

West

Dela

ware

Tunnel 0

340

297

381

235 0 0 0 0 0

391 70 0 0 0 0 0

183

183

180

180

180

179

179

179

179

179

179

178

179

4,05

1

Neve

r-sink

Tunnel

338 0 0 0 0 0 0 0 0 0 5 0 0

143

145

270

312

314

312

394

292

321

143

149

144

150

153

158

133

144

4,020

Average

to d

ate

DJune 1

, 19

86to

date

1<ate

East

Dela

ware

986

Tunnel

786

July

1

450

788

774

778

749

691

649

618

594

574

598

592

581

582

583

591

601

621

638

657

670

682

686

690

693

697

700

703

705

707

2 45

03

450

4 44

95

450

6 45

07

452

8 450

9 450

10

448

11

450

12

450

13

450

14

450

15

450

16

450

17

449

18

450

19

450

20

450

21

450

22

450

23

451

24

450

25

450

26

450

27

450

28

450

29

452

30

449

31

450

13,9

50

West

Nev

Dela

ware

si

Tunn

el

Tuner

- Av

erag

e to

dat

enk

June 1

, 1986

nel

to d

ate

178

149

710

178

144

712

179

147

713

178

145

715

178

145

717

178

156

719

169

177

721

178

1 17

722

178

147

723

178

147

724

178

148

725

178

88

725

177

210

728

177

146

729

178

149

730

178

152

731

177

147

732

178

153

733

177

146

734

177

137

734

177

164

735

177

112

735

177

187

737

177

150

738

177

147

738

177

152

739

177

151

740

177

149

740

177

153

741

177

149

742

177

154

742

5,494

4,61

8

Tabl

e 13

. -

Dive

rsio

ns to

New Yor

k Ci

ty water s

uppl

y -

cont

inue

d Million

gall

ons

per

day

for 24-hour

peri

od b

egin

ning

090

0 local

time

(River Mas

ter

dail

y operation

record)

Date

1986

Aug.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

East

De

lawa

re

Tunn

el45

145

1450

450

450

449

459

450

450

450

450

449

449

450

451

451

451

450

450

450

450

449

449

448

450

450

452

173

258

449

450

West

Neve

Dela

ware

si

r Tunnel

Tuni

2r-

Aver

age

to date

D<

ik

June

1 ,

1986

lei

to d

ate

1(ate

East

Delaware

386

Tunn

el56

15

8 741

Sept

.1

450

0 15

4 739

0 14

9 73

717

8 161

738

178

157

738

178

153

739

178

165

740

34

156

738

0 14

5 736

0 15

2 734

0 15

5 733

0 15

1 731

0 15

2 729

0 14

9 727

0 15

2 726

0 15

4 724

0 14

7 722

0 15

5 721

0 14

2 71

90

155

718

0 15

2 717

0 15

0 715

0 151

714

0 15

9 713

0 14

2 711

0 15

9 71

00

153

709

0 15

8 70

518

0 15

2 703

185

158

704

2 450

3 450

4 450

5 45

16

450

7 450

8 450

9 451

10

449

11

449

12

450

13

450

14

450

15

450

16

450

17

449

18

449

19

450

20

451

21

451

22

450

23

450

24

450

25

375

26

447

27

449

28

449

29

450

30

451

West

Ne

v De

lawa

re

si

Tunn

el

Tun

er-

Average

to date

nk

June 1

, 19

86

nel

to d

ate

184

156

706

182

163

707

182

153

708

182

151

709

180

156

709

180

152

710

180

152

711

180

153

712

179

156

712

184

153

713

178

159

714

178

156

714

178

161

715

178

169

716

178

165

717

178

152

717

177

155

718

177

156

718

177

158

719

178

161

720

178

157

720

177

154

721

176

153

721

176

153

722

176

153

722

176

158

722

175

162

723

175

154

723

175

159

724

175

159

724

185

159

705

Total

13,4

891,352

4,755

13,421

5,34

94,699

Tabl

e 13

. -

Dive

rsio

ns to New York

City wat

er su

pply

- co

ntin

ued

Million

gall

ons

per

day

for 24

-hou

r pe

riod

beg

inni

ng 0

900

loca

l ti

me

(Riv

er Mas

ter

daily

operation

reco

rd)

Date

Ea

stDe

lawa

re19

86

Tunnel

Oct.

1 454

2 448

3 275

4 452

5 45

16

450

7 44

98

449

9 451

10

451

11

450

12

450

13

450

14

448

15

448

16

452

17

452

18

452

19

451

20

450

21

450

22

450

23

448

24

450

25

469

26

450

27

450

28

450

29

450

30

420

31

449

West

Dela

ware

Tunn

el17

517

517

417

317

3

173

175

175

174

175

175

174

174

175

174

175

175

175

174

175

175

174

174

174

182

174

175

175

175

175

175

Never-

sink

Tunn

el16

016

7154

171

160

163

149

166

144

168

151

204

160

162

139

158

156

158

163

161

155

160

168

173

163

168

165

163

169

160

168

Average

to d

ate

Date

East

June 1

, 1986

Delaware

to d

ate

1986

Tunn

el725

Nov.

1

449

725

2 449

724

3 450

725

4 450

725

5 452

726

6 45

1726

7 45

1727

8 450

727

9 450

727

10

450

728

11

449

729

12

458

729

13

455

729

14

451

730

15

450

730

16

450

730

17

451

731

18

449

731

19

451

732

20

451

732

21

451

732

22

450

733

23

450

733

24

449

734

25

449

734

26

450

734

27

451

735

28

452

735

29

452

735

30

452

736

West

Never-

Average

to~3ate

Dela

ware

sink

June

1 ,

19

86Tu

nnel

Tunnel

to d

ate

175

157

736

174

166

736

174

162

737

174

166

737

174

155

737

176

165

738

174

157

738

174

174

738

174

158

739

167

160

739

174

160

739

174

163

739

175

156

740

175

168

740

175

169

740

174

157

741

175

157

741

175

172

741

175

170

741

175

161

742

176

155

742

176

155

742

176

152

742

176

157

743

177

136

743

177

148

743

177

146

743

177

149

743

176

149

743

53

149

743

Total

13,7

695,

416

5,02

613

,523

5,124

4,74

9

Tabl

e 14

.- New York C

ity Reservoir

release

desi

gn da

ta

Adva

nce

esti

mate

of

disc

harg

e of Delaw

are

Rive

r at

Mon

tagu

e excl

usiv

e of New

Yor

k Ci

ty r

eser

voir

rel

ease

s

Date o

f adva

nce

estimate

1985/86

Powerp

lant

release

fore

cast

sLake

Wa

llen

paup

ack

cfs 1

Mong

aup

Reservoir

cfs 2

Unco

ntro

lled

runoff

Present

conditions

cfs 3

Weather

adju

stme

nt

cfs 4

Date

Discharge

cfs 5

Indi

cate

d

deficiency

cfs 6

Bala

ncin

g

adjustment

cfs 7

Directed

rele

ase

Dail

y cf

s 8

Cumulative

cfs 9

Actual

defi

cien

cy

Dail

y cf

s10

Cumulative

cfs

11

Cumulative

difference

cfs- days

12

Bala

ncin

g

adju

stme

nt

cfs

13

MONTAGUE D

ESIG

N RA

TE - 1,

700

CFS

DECEMBER

1-21

, 19

85,

1,750

CFS

DECE

MBER

22, 19

85 to JUN

E 14

, 19

86,

/ND

1,85

0 CF

S JU

NE 15 TO

NOVEMBER

30,

1986

The

esti

mate

d Montague di

scha

rge

was

grea

ter

than

the Montague d

esig

n rate

Dece

mber

1 ,

1985 to Jan

uary

18, 19

86,

January

21 to

Jun

e 28

, July 1

-12,

15

-24,

31

to A

ugust

17,

19-2

3, an

d 26-30,

Jan.

16 17

June

26 27

July

10 11 22 23 24 25 26 27

0 0 0 0 0 0

473

473 0 0

473

473

Aug.

15 21 22 28

0 54 194 65 194

259 0 0 0 0 0 0

1,46

01,

450

1,52

31,

398

902

818

1,20

81,

052

896

755

733

1,27

1

0 0 7 77 51 251 0 0 12

250

332 32

Jan

. 19 20

June

29 30

July

13 14 25 26 27 28 29 30

1,46

01,

504

1,72

41,

540

1,14

71,

328

1,68

11,

525

908

1,00

51,

538

1,77

6

290

246

126

310

703

522

169

325

942

845

312 74

0 0 0 0

+39

+39

-92

-92

-92

-63

-22

+10

290

246

126

310

742

561 77 233

850

782

290 84

126

436

1,17

81,

739

1,81

62,

049

2,89

93,

681

3,97

14,

055

42 201 0 0

491

554

692 56 0 0

42 243

823

823

1,59

82,

152

2,84

42,

900

2,90

02,

900

84 193

355

916

218

-103 55 78

11,

071

1,15

5

-8 -19

-36

-92

-22

+10 -5 -78

-100

-100

13 106 63

Aug.

18

1,458

24 25 31

1,59

01,590

990

392

260

260

860

-100

-100

-100

-100

292

160

160

760

4,34

7

4,50

74,

667

208

128

3,16

9

3,377

3,50

5

5.42

7 1,193

4,698

1,178

1,130

1 ,1

62 729

-100

-100

-100 -73

Col.

1

- Furnishe

d by p

ower c

ompany.

Col. 2

- Furnishe

d by p

ower c

ompany.

Col. 3

- Co

mput

ed f

rom

inde

x stations.

Col. 4

- Co

mput

ed increase in r

unof

f based

onweather

fore

cast

s.

Col. 5

= Co

l.

1 +

Col.

2

+ Co

l. 3

+ Col. 4.

Col. 6 =

Desi

gn ra

te -

Col. 5,

wh

en p

osit

ive;

otherwise

Col. 6=0.

Col. 7

= Col. 13 (4 d

ays

earl

ier)

. Col. 8

= De

sign

rat

e -

Col.

5

+ Co

l. 7,

wh

enpo

siti

ve;

otherwise

Col. 8=0.

Col. 9

= Su

mmat

ion

of C

ol.

8.

Col. 10 =

Desi

gn rate -

(Col.

9 +

Col.

10 f

rom

Table

15), vi

ien

posi

tive

; ot

herw

ise

Col.

10

* 0

.Col.

11 =

Summ

atio

n of C

ol.

10.

Col.

12

=

Col.

9

- Co

l. 11

.C

ol.

13 =

Col

. 12

div

ided

by

min

us

10,

lim

ited

to

±

100.

Tab

le 1

4.-

N

ew Y

ork

Cit

y R

eser

voir

re

leas

e de

sign

dat

a -

cont

inue

d

(Riv

er M

aste

r d

aily

op

erat

ion

rec

ord)

Adv

ance

es

tim

ate

of d

isch

arg

e of

Del

awar

e R

iver

at

Mon

tagu

e ex

clu

siv

e of

New

Yor

k C

ity

rese

rvoir

rel

ease

s

Dat

e of

ad

vanc

e es

tim

ate

1986

Avg

.29 30 31

Sep

t.1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Col

. 1

-C

ol.

2 -

Col

. 3

-C

ol.

4 -

Pow

erpl

ant

rele

ase

fore

cast

sL

ake

Wal

lenp

aupa

ck

cfs 1 "0

"

071

171

171

1

711 0 0

713

713

713

713

713 0 0

714

714

714

357

357 0 0 0 0 0 0 0 0 0 0

Mbn

gaup

R

eser

voir

cf

s 2 0 65 270

270

270

205 0 86 324

346

216

216

151 0 65 216

216

216

216

151 0 43 162

162

162

162

119 0 43 162

Unc

ontr

olle

d ru

noff

Pre

sent

co

ndit

ions

cf

s 3 854

848

769

705

703

671

644

640

750

735

698

641

574

555

245

461

456

394

438

442

258

453

451

483

504

488

635

596

642

719

Fu

rnis

hed

by

pow

er

com

pany

.

Wea

ther

ad

just

men

t cf

s 4 0 0 0 7 0 0 20 9 11 6 0 0 72 65 0 0 0 0 0 0 53 19 0 25 138

210 47 474

253 37

Dat

e

Sep

t.12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Dis

char

ge

cfs 5 85

491

31,

750

1,69

31,

684

1,58

766

473

51,

798

1,80

0

1,62

71,

570

1,51

062

031

0

1,39

11,

386

1,32

41,

011

950

311

515

613

670

804

860

801

1,07

093

891

8

Ind

icat

ed

def

icie

ncy

cfs 6 99

693

710

015

716

6

263

1,18

61,

115 52 50 223

280

340

1,23

01,

540

459

464

526

839

900

1,53

91,

335

1,23

71,

180

1,04

6

990

1,04

978

091

293

2

Bal

anci

ng

adj u

stm

ent

cfs 7

-100

-100

-100 -73

-59

-43

-43

-52

-58

-63

-65

-39

-28 -7 -3 +4 +7 -2 +23 +4 +5 -4 -5 -21

-48

-50

-52

-62

-57

-42

Col

. 6

= D

esig

n ra

te -

C

ol.

5,

whe

n posi

tive;

Fu

rnis

hed

by

pow

er

com

pany

.C

ompu

ted

from

inde

x st

ati

ons.

Com

pute

d in

crea

se

in

runoff

bas

ed

oth

erw

ise

Col

.C

ol.

7 =

Col

6=

0.

Dir

ecte

d

rele

ase

Dai

ly

cfs 8 89

683

7 0 84 107

220

1,14

31,

063 0 0

158

241

312

1,22

31,

537

463

471

524

862

904

1,54

41,

331

1,23

21,

159

998

940

997

718

855

890

Col

.

. 13

(4

day

s earl

ier)

.on

C

ol.

8 =

Des

ign

rate

-

Col

. 5

+ C

ol.

7,

whe

nw

eath

er f

ore

cast

s.C

ol.

5 =

Col

. 1

+ C

ol.

2 +

Col

. 3

+ C

ol.

4.

posi

tive;

ot

herw

ise

Col

. i 3

= 0.

Col

. 9

= Su

mm

atio

n of

Col

. 8

.

Col

.C

ol.

Col

.

Cum

ulat

ive

cfs 9

6,32

37,

160

7,16

07,

244

7,35

1

7,57

18,

714

9,77

79,

777

9,77

7

9,93

510

,176

10,4

8811

,711

13,2

48

13,7

1114

,182

14,7

0615

,568

16,4

72

18,0

1619

,347

20,5

7921

,73

822

,736

23,6

7624

,673

25,3

9126

,246

27,1

36

Act

ual

def

icie

ncy

Dai

ly

cfs 10

1,03

799

2 0 0 48 163

1,12

71,

325

110

207

201

310

344

1,13

21,

781

277

482

435

850

743

1,27

01,

320

1,20

61,

059

1,05

0

1,09

186

578

81,

038

814

10

= D

esig

n ra

teT

able

Col

.

Cum

ulat

ive

cfs 11 5,73

56,

727

6,72

76,

727

6,77

5

6,93

88,

065

9,39

09,

500

9,70

7

9,90

810

,218

10,5

6211

,694

13,4

75

13,7

5214

,234

14,6

6915

,519

16,2

62

17,5

3218

,852

20,0

5821

,11

722

,167

23,2

5824

,123

24,9

1125

,949

26,7

63

- (C

ol.

9 +

Cum

ulat

ive

dif

fere

nce

cfs-

day

s12 58

843

343

351

757

6

633

649

387

277 70 27 -42

-74 17

-227 -41

-52 37 49 210

484

495

521

621

569

418

550

480

297

373

Bal

anci

ng

adj u

stm

ent

cfs 13 -59

-43

-43

-52

-58

-63

-65

-39

-28 -7 -3 +4 +7 -2 +23 +4 +5 -4 -5 -21

-48

-50

-52

-62

-57

-42

-55

-48

-30

-37

Col

. 10

fr

om15

),

whe

n posi

tive;

ot

herw

ise

10 =

0.

11

= S

uim

atio

n of

C

ol.

10.

12

= C

ol.

9 -

Col

. 11

.13

=

Col

.±

100.

12

div

ided

by

min

us

10,

lim

ited

to

Tabl

e 14.- New Yo

rk C

ity Reservoir

release

design da

ta -

continued

(Riv

er M

aste

r d

aily

oper

atio

n r

ecor

d)A

dvan

ce

esti

mat

e of

dis

char

ge o

f D

elaw

are

Riv

er

Dat

e of

adva

nce

esti

mat

e

1986

Sep

t. 2

8 29 30O

ct.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

excl

usiv

eP

ower

plan

t

at M

onta

gue

of

New

Yor

k C

ity

rese

rvoir

rel

ease

sre

leas

efo

reca

sts

Lak

eW

alle

npau

pack

cfs 1

_ __

_ Q

_._

023

823

8 0 0

Mon

gaup

Res

ervo

ircf

s 2-1

62~

162

162

119 0 65

Unc

ontr

olle

dru

noff

Pre

sent

cond

itio

nscf

s 3*"8

03

"

726

669

645

753

822

Oct

ober

7-1

1,

1986

th

e es

tim

ated

disc

harg

e w

as

abov

e th

e M

onta

gue

0 023

823

8

358

358

358 0 0

477

477 0

477

477 0 0 0 0 0 0

0 017

317

3

389

259

162 0 65 356

389

389

389

194 0

194

389

389

162

162

1,21

01,

180

1,07

599

3

979

1,12

21,

456

1,22

51,

338

1,22

81,

078

934

1,05

11,

034

801

973

933

956

1,30

81,

409

Wea

ther

adju

stm

ent

cfs 4 4 91 195 94 456

901

Mon

tagu

e

Dat

e

Oct

. 1 2 3 4 5 6 7 8

Dis

char

ge

cfs 5 969

979

1,26

41,

096

1,20

9

1,78

8

desi

gn ra

te

9

0 5 70 42 563

156 0 0 0 0 0 0 0 0 0

187

247

127 0 0

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

1,21

01,

250

1,55

61,

446

2,28

91,

895

1,97

61,

225

1,40

3

2,06

11,

944

1,32

31,

917

1,70

5

801

1,35

41,

569

1,47

21,

470

1,57

1

Indic

ated

def

icie

ncy

cfs 6 881

871

586

754

641 62 0 0 0 0 0

640

600

294

404 0 0 0

625

447 0 0

527 0

145

1,04

949

628

137

838

027

9

Bal

anci

ng

adju

stm

ent

cfs 7 -55

-48

-30

-37

-80

-76

-80

-100

-100

-100

-100

-100

-100

-100

-100

-100 -83

-78

-100

-100

-100

-100 -90

-62

-59

-59

-44

-44

-33

-21

-12

Dir

ecte

d

rele

ase

Dai

lycf

s 8 826

823

556

717

561 0 0 0 0 0 0

540

500

194

304 0 0 0

525

347 0 0

437 0 86 990

452

237

345

359

267

Cum

ulat

ive

cfs 9

27",

962

28,7

8529

,341

30,0

5830

,619

30,6

1930

,619

30,6

1930

,619

30,6

19

30,6

1931

,159

31 ,

659

31 ,

853

32,1

57

32,1

5732

,157

32,1

5732

,682

33,0

29

33,0

2933

,029

33,4

6633

,466

33,5

52

35,5

42

134

,994

35,2

3135

,576

35,9

3536

,202

Act

ual

def

icie

ncy

Dai

lycf

s 10 400

867

515 0 0 0 0 0

158

110

237

935

846

242 0 0 0 0

707

634 27 0

582 0

197

,112 54

2 021

651

145

1

Cum

ulat

i ve

cfs 11

"27,1

63

28,0

3028

,545

28,5

4528

,545

28,5

4528

,545

28,5

4528

,703

28,8

13

29,0

5029

,985

30,8

3131

,07

331

,07

3

31 ,

073

31 ,

073

31 ,

073

31 ,

780

32,4

14

32,4

4132

,441

33 ,0

2333

,023

33,2

20

34,3

3234

,874

34,8

7435

,090

35 ,6

0136

,052

Cum

ulat

ive

dif

fere

nce

cfs-

day

s12 79

975

579

61

,513

2,07

4

2,07

42,

074

2,07

41,

916

1,80

6

1 ,5

691,

174

828

780

1,08

4

1 ,0

841

,084

1 ,0

84 902

615

588

588

443

443

332

210

120

357

486

334

150

Bal

anci

ng

adju

stm

ent

cfs 13 -80

-76

-80

-100

-100

-100

-100

-100

-100

-100

-100

-100 -83

-78

-100

-100

-100

-100 -90

-62

-59

-59

-44

-44

-33

-21

-12

-36

-49

-33

-15

Col.

1

- Furnished

by p

ower

company.

Col.

2

- Fu

rnis

hed

by p

ower

company.

Col.

3

- Co

mput

ed from in

dex

stat

ions

.Co

l. 4

- Computed in

crea

se in

runoff b

ased

on

weather

fore

cast

s.

Col.

5 =

Col.

1 +

Col.

2 +

Col.

3

+ Co

l. 4.

Col.

6

= De

sign

rate -

Co

l. 5, wh

en positive;

Col,

othe

rwis

e Co

l. 6=0.

Col.

7

= Co

l. 13

(4

days

earl

ier)

. Co

l. 8

= Design rate -

Co

l. 5

+ Col. 7, when

Col,

positive;

otherwise

Col.

8=0.

Col,

Co

l. 9

= Summation

of Col. 8.

Col

10 =

Design rate -

(Col.

9 +

Col. 10

fr

om

Tabl

e 15

), wh

en positive;

othe

rwis

e Col. 10 =

0.11

= Summation

of Col. 10

.12 =

Col. 9

- Co

l.

11 .

13

= C

ol.

12 d

ivid

ed b

y m

inus

10,

li

mit

ed

to

±10

0.

Tab

le 1

4.-

N

ew Y

ork

Cit

y R

eser

voir

re

leas

e de

sign

da

ta -

co

ntin

ued

(Riv

er M

aste

r d

aily

oper

atio

n r

ecor

d)A

dvan

ce e

stim

ate

of d

isch

arge

of

Del

awar

e R

iver

Dat

e of

adva

nce

esti

mat

e

1986

Oct

. 29 30 31

Nov

. 1 2 3 4 5 6

excl

usiv

eP

ower

plan

t

at M

onta

gue

of

New

Yor

k C

ity

rese

rvoir

rel

ease

sre

leas

efo

reca

sts

Lak

eW

all e

npau

pack

cfs 1 0 0 0 0 0 0 0 0 0

Mon

gaup

Res

ervo

ircf

s 2 130 0 49 162

162

162

162

113 0

Unc

ontr

olle

dru

no

ffP

rese

ntco

ndit

ions

cfs 3

1,37

81,

312

1,17

694

093

8

907

888

950

1,69

7

Wea

ther

adj u

stin

ent

cfs 4 0 0 0 0 0 0

383

720

140

Dat

e

Nov

. 1 2 3 4 5 6 7 8 9

Dis

char

ge

cfs 5

Indic

ated

def

icie

ncy

cfs 6

Bal

anci

ng

adj u

stm

ent

cfs 7

Dir

ecte

d

Dai

lycf

s 81,

508

342

-36

306

1,31

2 53

8 -4

9 48

91,

225

625

-33

592

1,10

2 74

8 -1

5 73

31,

100

750

+17

767

1,06

9 78

1 +5

7 83

81,

433

417

+92

509

1,78

3 67

+1

00

167

1,83

7 13

+1

00

113

rele

ase

Cum

ulat

ive

cfs 9

Act

ual

def

icie

ncy

Dai

lycf

s 1036

,508

62

736

,997

88

737

,589

94

838

,322

86

039

,089

82

4

39,9

27

659

40,4

36

149

40,6

03

040

,716

0

Cum

ulat

ive

cfs 11

Cum

ulat

ive

dif

fere

nce

cfs-

days

12

Bal

anci

ng

adju

stm

ent

cfs 13

36,6

79

-171

+1

737

,566

-5

69

+57

38,5

14

-925

+9

239

,374

-1

,052

-1

0040

,198

-1

,109

-1

00

40,8

57

-930

+9

341

,00

6 -5

70

+57

41 ,

006

-403

+4

041

,00

6 -2

90

+29

Nov

. 10

-30

esti

mat

ed M

onta

gue

disc

harg

e w

as gre

ater

th

an

the

Mon

tagu

e de

sign

ra

te

Col

. 1

- F

urni

shed

by

pow

er

com

pany

.C

ol.

2 -

Fur

nish

ed b

y po

wer

co

mpa

ny.

Col

. 3

- C

ompu

ted

from

in

dex

stat

ion

s.C

ol.

4 -

Com

pute

d in

crea

se

in

runo

ff b

ased

on

wea

ther

fo

reca

sts.

C

ol.

5 =

Col

. 1

+ C

ol.

2 +

Col

. 3

+ C

ol.

4.

Col

. 6

= D

esig

n ra

te -

C

ol.

5,

whe

n posi

tive;

othe

rwis

e C

ol.

6=

0.

Col

. 7

= C

ol.

13

(4 d

ays

earl

ier)

. C

ol.

8 =

Des

ign

rate

-

Col

. 5

+ C

ol.

7,

whe

nposi

tive;

ot

herw

ise

Col

. 8

=0

. C

ol.

9 =

Sum

mat

ion

of C

ol.

8.

Col

. 10

=

Des

ign

rate

-

(Col

. 9

+ C

ol.

10

from

T

able

15)

, w

hen

posi

tive;

ot

herw

ise

Col

. 10

=

0.11

=

Sum

mat

ion

of

Col

. 10

.12

=

Col

. 9

- C

ol.

11 .

Col

C

ol

Col

13 =

Col

. 12

div

ided

by

min

us 1

0,

lim

ited

to

+1

00.

Table

15.

- Controll

ed r

eleases

for

reservoirs in th

e up

per De

lawa

re R

iver b

asin

and

segregation

of fl

ow o

f De

lawa

re R

iver

at

Mont

ague

, N.

J.(R

iver

Master

daily

operation

reco

rd)

Cont

roll

ed r

eleases

from

New

Dire

cted

Date

~_\

/mount

1985

J

1Nov.

28

0

29

030

0Dec.

1

02

0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

011

012

0

13

014

015

0

16

017

0

18

019

020

0

21

022

0

23

024

025

026

0

27

028

0Tota

l 0

Pepa

cton

f 2 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 51 51 50 50 53 53 53 48 54 51 913

Col.

2-24 h

ours

beginning

Mean c

ubic

York C

ity

reservoirs

f

Cann

onsv

ille

Neversink

Da

3 4

feet

per

sec

ond

for 24

hours

Controlled r

elea

ses

ran po

wer

rese

rvoi

rsLa

kete

Wa

llen

- Mongaup

paupack

Reservoir

5 6

25

15

Nov. 30

1,668

518

25

15

Dec.

1 1,503

518

25

1525

15

25

15

25

1525

15

25

1525

15

25

15

25

1525

15

25

1525

1525

15

25

1525

15

25

1525

1525

15

25

2834

25

34

2534

25

34

25

34

2534

2534

25

34

2534

25

34

25

865

578

1200

of

date

sho

wn.

2 1 ,

457

475

3 1 ,465

481

4 1 ,465

454

5 1 ,

467

497

6 96

5 43

77

746

400

8 981

405

9 95

5 46

4

10

952

518

11

930

470

12

950

405

13

965

394

14

0 49

7

15

0 43

716

47

8 44

317

52

8 43

218

61

5 45

419

989

432

20

607

470

21

0 47

022

48

470

23

777

475

24

0 45

4

25

17

432

26

801

416

27

409

421

28

0 43

229

38

464

30

494

340

22,2

70

13,9

75

Date

Dec.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Col.

3-24 h

ours en

ding

240

0 one

day

late

r.Co

l. 4-24 h

ours

beginning

Col.

5-24 h

ours

beg

inni

ngCo

l. 6-24 h

ours

beg

inni

ng

1 500

one day l

ater.

0800

of

date s

hown

.12

00 o

f da

te s

hown

.

Dela

ware

River

Segregationat

Montague

of fl

owCo

ntrolled r

eleases

N.Y.

C. reservoirs

Directed ]

Other

i IT'8"

0 "

5T^

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 59

0 72

0 110

0 11

00

109

0 109

0 112

0 112

0 112

0 10

70

113

0 11

0

0 2,

356

Col.

8

= Co

l. 2

+Co

l.

9 =

Col.

5

+Co

l. 10 -

Col

. 11

Col.

11

-

24 h

ours

Power-

plants 9

2,186

2,021

1,93

21,

946

1,91

9

1,96

41 ,

402

1,14

61,

386

1,41

9

1,47

01,

400

1,355

1,359

497

437

921

960

1,06

91,421

1,07

7470

518

1,252

454

449

1,217

830

432

502

834

36,2

45

Comp

uted

unco

n­tr

olle

d10

T1^55

14,7

2015,709

11,395

9,22

2

8,077

7,05

96,

535

5,71

55,

292

4,921

6,77

17,

616

6,57

25,864

5,41

44,900

4,311

3,69

22,

920

2,651

2,92

03,072

3,03

93,

337

3,03

92,871

2,55

82,

461

2,48

52,456

178,

849

Tota

l11

13,5

0016

,800

17,7

0013,400

11,2

00

10,1

008,520

7,740

7,160

6,77

0

6,450

8,230

9,03

07,

990

6,42

0

5,91

05,

880

5,33

04,

820

4,400

3,80

03,

500

3,700

4,40

03,900

3,60

04,

200

3,50

03,000

3,10

03,

400

217,

450

Col.

3

+ Co

l. 4

- Co

l. 7.

Col.

6.

- Co

l. 7

-Co

l. 8

-

Col. 9.

of calendar d

ay s

hown.

Tab

le 1

5.

- C

ontr

olle

d re

leas

es

for

rese

rvo

irs

in

the

uppe

r D

elaw

are

Riv

er b

asin

an

d se

greg

atio

n of

fl

ow o

f D

elaw

are

Riv

er a

t M

onta

gue,

N

.J.

- co

ntin

ued

(Riv

er M

aste

r d

aily

ope

rati

on

reco

rd)

Mea

n cu

bic

feet

per

sec

ond

for

24 h

ours

Con

trol

led

rele

ases

fr

om N

ew

Dir

ecte

dD

ate

[ A

mou

nt19

85/8

6 f

1D

ec.

29

030

0

31

0Ja

n.

1 0

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

011

0

12

0

13

014

0

15

016

29

017

24

6

18

019

0

20

021

0

22

0

23

024

0

25

026

0

27

028

0

Tot

al

536

Pep

acto

n

2 50 50 50 50 50 50 50 50 50 50 50 50 51 51 51 51 51 51 51 50 51 50 51 50 50 50 51 51 50 50 51

1,56

2C

ol.

2-2

4 h

ours

beg

inni

ng

Yor

k C

ity

rese

rvoir

s

Can

nons

vi l

ie

Nev

ers i

nk

3 4

34

2534

25

34

2534

25

34

25

34

2634

26

34

2534

25

34

25

34

2534

25

34

2534

25

34

25

34

2534

25

34

2522

0 25

175

25

34

2534

25

34

2534

25

34

25

34

2534

25

34

2534

25

34

2534

20

1 ,3

81

772

1200

of

date

sh

own.

Con

trol

led r

elea

ses

from

pow

er r

eser

vo

irs

Lak

eD

ate

Wal

len-

paup

ack

5D

ec.

31

425

Jan.

1

592

467

3 41

34

0

5 0

6 65

27

710

8 64

59

0

10

613

11

012

0

13

650

14

995

15

1,08

216

1

,025

17

818

0

19

0

20

702

21

022

51

423

99

224

96

9

25

026

0

27

1 ,03

128

1 ,

060

29

1 ,0

2630

97

7

15,0

15

Mon

gaup

Res

ervo

ir6 19

423

830

219

4 0 11 146

302

259

243

173 0 97 254

275

297

146

157

119 49 335

313

319

475

221

308

416

481

475

464

470

7,73

3

Del

awar

e R

iver

at

Mon

tagu

eS

egre

gati

on

Dat

e

Jan.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

of

flow

Con

trol

led

rele

ases

N.Y

.C.

rese

rvo

irs

Dir

ecte

d7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

296

250 0 0 0 0 0 0 0 0 0 0 0

546

Col

. 7

=C

ol.

3-2

4 h

ours

en

ding

240

0 on

e da

y la

ter.

Col

. 4

-24

hou

rs b

egin

ning

Col

. 5

-24

hou

rs b

egin

ning

Col

. 6

-24

hou

rs b

egin

ning

1500

one

day

late

r.08

00 o

f da

te s

how

n.12

00 o

f da

te

show

n.

Col

. 8

=C

ol.

9 =

Col

. 10

=

Col

. 11

-

Oth

er8 10

910

910

910

910

9

110

110

109

109

109

109

109

110

110

110

110

110

110 0 0

110

109

110

109

109

109

110

110

109

109

105

3,16

9C

ol.

2 +

resp

onse

Col

. 2

+C

ol.

5 +

Col

. 11

24 h

ours

Pow

er-

pla

nts 9 619

297

769

607 0 11 798

1,01

290

424

3

786 0 97 904

1,27

0

1,37

91,

171

165

119 49

1,03

731

383

31,

467

1,19

0

308

416

1,51

21,

535

1,49

01,

447

22,7

48C

ol.

3 +

to C

ol.

1C

ol.

3 +

Col

. 6.

- C

ol.

7 -

Com

pute

dun

con­

troll

ed

10 2,37

22,

094

2,12

22,

114

2,08

1

1,97

92,

192

2,07

91,

787

1,74

8

2,00

51,

691

1,59

31,

686

1,62

0

1,21

11,

319

1,42

51,

385

3,70

1

12,3

5310

,178

8,21

75,

924

5,20

1

6,21

39,

474

7,57

85,

916

4,60

14,

598

118,

457

Col

. 4

in

To

tal

11 3,10

02,

500

3,00

02,

830

2,19

0

2,10

03,

100

3,20

02,

800

2,10

0

2,90

01,

800

1 ,3

002,

700

3,00

0

2,70

02,

600

1,70

01,

800

4,00

0

13,5

0010

,600

9,16

07,

500

6,50

0

6,63

010

,000

9,20

07,

560

6,20

06,

150

144,

920

Col

. 4

- C

ol.

7.

Col

. 8

-C

ol.

9.of

cal

enda

r da

y sh

own.

Tabl

e 15.

- Contro

lled

releases for

reservoirs in th

e upper Delaware R

iver b

asin

and

segr

egation

of f

low

of Del

awar

e River

at M

ontague, N.

J. -

continued

(Riv

er M

aste

r da

ily

oper

atio

n record)

Mea

n cu

bic

feet

Con

trol

led

rele

ases

fr

om N

ew

Dir

ecte

dD

ate

I A

mou

nt

-198

6 T

1

Jan.

29

030

0

31

0Fe

b.

1 0

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

011

0

12

0

13

014

0

15

016

0

17

0

18

019

0

20

021

0

22

0

23

024

0

25

0T

ota

l 0

Pep

acto

n

2 51 50 53 53 51 51 51 50 50 50 50 50 50 51 50 51 51 51 50 50 50 50 50 48 50 50 51 511,

414

Col

. 2-2

4 h

ours

beg

inni

ng

Yor

k C

ity

rese

rvo

irs

Can

nons

vi l

ie

3 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 952

Nev

ersi

nk

4"2

5 26 26 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 702

per

sec

ond

for

24 h

ours

Con

trol

led

rele

ases

from

jpo

wer

res

erv

oir

s

Dat

e

Jan.

31Fe

b.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Lak

eW

alle

n-pa

upac

k5 79

2 0 561,

010

1,02

3

1,01

31,

016

976 0 63 960

941

1,02

497

590

0 0 61 950

1,59

11,

624

1,62

71,

631

968

965

1,01

0

1,02

71,

023

1,01

324

,239

Mon

gaup

Res

ervoir

De

6

Del

awar

e R

iver

Seg

rega

tion

at M

onta

gue

of

flow

Co

ntr

oll

ed r

elea

ses

N.Y

.C.

rese

rvoir

sit

e D

irec

ted

737

3 Fe

b.

1 0

292

464

427

470

475

464

232

211

221

437 54 157

351

221 0 0 76 238

189

292

362 43 221

346

367

356

324

7,66

312

00 o

f da

te

show

n.C

ol.

3-2

4 h

ours

en

ding

240

0 on

e da

y la

ter.

Col

. 4

-24

hou

rs

begi

nnin

gC

ol.

5-2

4 h

ours

beg

inni

ngC

ol.

6-2

4 h

ours

beg

inni

ng

1500

one

day

late

r.08

00 o

f da

te s

how

n.

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

0

11

012

0

13

014

0

15

0

16

017

0

18

019

0

20

0

21

022

0

23

024

0

25

0

26

027

0

28

0 0

Col

. 8

=C

ol.

9 =

Col

. 10

=

Col

. 11

-

Oth

er8 11

011

011

311

211

0

110

110

109

109

109

109

109

109

110

109

110

110

110

109

109

109

109

109

107

109

109

110

110

3,06

8C

ol.

2 +

Col

. 5

+C

ol.

1124

hou

rs

Pow

er-

pla

nts

9 1,16

529

252

01,

437

1,49

3

1,48

81,

480

1,20

821

128

4

1,39

799

51,

181

1,32

61,

121 0 61

1,02

61,

829

1,81

3

1,91

91,

993

1,01

11,

186

1,35

6

1,39

41,

379

1 ,3

3731

,90

2C

ol.

3 +

Col

. 6.

- C

ol.

7 -

Com

pute

dun

con­

tro

lled

104,

045

3,74

83,

867

3,80

13,

597

3,65

23,

510

3,06

32,

950

3,18

7

2,92

42,

666

2,51

02,

364

2,17

0

2,24

02,

329

3,19

44,

542

6,30

8

7,60

29,

598

9,98

08,

247

7,01

5

5,77

75,

191

5,03

312

5,11

0

Tota

l11 5,32

04,

150

4,50

05,

350

5,20

0

5,25

05,

100

4,38

03,

270

3,58

0

4,43

03,

770

3,80

03,

800

3,40

0

2,35

02,

500

4,33

06,

480

8,23

0

9,63

011

,700

11,1

009,

540

8,48

0

7,28

06,

680

6,48

016

0,08

0

Col

. 4

- C

ol.

7.

Col

. 8

- C

ol.

9.of

ca

lend

ar

day

show

n.12

00 o

f da

te

show

n.

Tab

le 1

5.

- C

ontr

olle

d re

leas

es

for

rese

rvoir

s in

th

e up

per

Del

awar

e R

iver

bas

inan

d se

gre

gat

ion o

f fl

ow o

f D

elaw

are

Riv

er at

Mon

tagu

e,

N.J

. -

cont

inue

d _______________(R

iver

Mas

ter

dai

ly o

per

atio

n re

co

rd)_

__

__

__

__

__

__

__

Mea

n cu

bic

feet

per

sec

ond

for

24 h

ours

Cont

roll

ed re

leas

es from New

Yor

k Ci

ty reservoirs

Dire

cted

Date

I

Amou

nt1986

[ 1

Pepacton

2

Cann

onsv

ille

t 3

Neversink

4

Controlled re

leas

es

from j)o

wer re

serv

oirs

Date

Lake

Wa

llen

- pa

upac

k5

Mong

aup

Reservoir

6

Delaware R

iver

Segregation

Date

at M

onta

gue

of f

low

Controlled r

elea

ses

N.Y.

C. re

serv

oirs

Dire

cted

7Feb.

26

0

57

34

25

Feb. 29

909

243

Mar.

1

0 27

0

50

34

25

Mar.

1

0 200

20

28

0 50

34

25

2 2

221

3 0

Mar.

1

0 50

34

25

3 86

5 32

4 4

0 2

0 50

34

25

4 94

2 29

7 5

0

Other

8 116

109

109

109

109

Powe

r-

plants 9

Computed

unco

n­

trolled

10Total

111,152

4,702

5,970

200

4,73

1 5,040

223

4,65

8 4,

990

1,18

9 4,442

5,740

1,23

9 4,

232

5,580

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28Total

Col.

2

Col.

3

Col.

4

Col.

5

Col.

6

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-

24 h

ours

- 24

hours

- 24 h

ours

- 24

hours

- 24

hou

rs

50 50 51 51 50 56 51 50 50 50 50 51 53 50 48 50 50 50 50 51 51 50 50 51 51 511,571

1

beginning

1200

34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 59 34 34 34,079

of d

ate

shown.

25 25 25 25 25 25 25 25 25 25 25 26 25 25 25 25 25 25 25 25 25 25 25 25 25 25 776

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

956

1,001

940 0 0

953

469

469

935

1,01

9

477

1,37

71,

756

1,77

51,

770

1,770

1,778

1,784

1,79

41,

785

1,187

1,171

1,17

296

4938

941

31 ,899

324

308

211

146 54 146 0 0 0

265

545

502

437

475

518

459

459

454

508

502

459

443

427

448

416

421

10,212

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

ending 2

400

one

day

later.

beginning

1500

begi

nnin

g 08

00be

ginn

ing

1200

one

day

late

r.of

date sh

own.

of d

ate

show

n.

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Co

l.

8Co

l.

9Co

l. 10

Col.

11

109

109

110

110

109

115

110

109

109

109

109

111

112

107

107

109

109

109

109

110

110

109

134

110

110

110

3,42

6

= Co

l. 2

+=

Col.

5

+=

Col.

11

- 24

hou

rs

1,280

1,30

91,151

146 54

1,099

469

469

935

1,28

4

1,02

21,

879

2,19

32,

250

2,28

8

2,22

92,

237

2,238

2,30

22,

287

1,64

61,

614

1,59

91,

412

1,35

41,

362

42,1

11Co

l. 3

Col.

6.

- Co

l. 7

4,05

13,782

3,139

2,954

3,15

7

3,93

66,801

8,51

211

,656

76,607

74,0

6942

,110

29,2

9527

,043

40,005

28,4

6220

,054

15,153

12,189

10,803

9,94

49,877

10,267

9,678

8,73

68,218

503,263

4 Col. 4.

- Co

l. 8

-

5,44

05,

200

4,400

3,21

03,

320

5,15

07,

380

9,090

12,700

78,000

75,200

44,100

31 ,600

29,4

0042,400

30,800

22 ,40

017

,500

14,600

13,2

00

11,7

0011

,600

12,0

0011

,200

10,200

9,690

548,

800

Col. 9

.of c

alendar

day

shown.

Table

15.

- Contro

lled

releases fo

r reservoirs in the

uppe

r De

lawa

re R

iver

basin

and

segr

egation

of f

low

of D

elaw

are

River

at M

ontague, N.

J. -

contin

ued

(Riv

er M

aste

r da

ily

operation

record)

Mean c

ubic

fee

t

Controlled r

elea

ses

from New

Dire

cted

Date

V Amount

1986 T

1Mar.

29

030

0

31

0Apr.

1

02

0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

011

0

12

0

13

014

0

15

016

0

17

0

18

019

0

20

021

0

22

0

23

024

025

0

26

027

0

Tota

l 0

Pepacton

2"

' "

51 50 68 70 70 70 70 70 70 70 70 70 68 70 68 71 68 70 70 70 70 70 70 70 70 70 70 70 69 702,053

Col

2-24 h

ours

beginning

York

City reserv

oirs

Cann

onsv

ille

3 .

34 34 46 46 46 57 45 45 46 46 45 46 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 451,

346

Never s

ink

L 4 26 50 48 46 46 45 45 45 46 45 45 45 45 46 46 45 46 45 46 48 48 48 45 45 45 46 45 45 45 45

1,356

per

seco

nd fo

r 24 h

ours

Cont

roll

ed releases

from

power r

eservoirs

Date

Mar. 31

Apr.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Lake

Wallen-

paup

ack

5 949

953

972

967

958 0 0

233 0 0 0 0 0 0 3 0 0

700

895 0 0

468

482

405

939

945 0 0

925

963

11,7

57

Mongaup

Rese

rvoi

r6 40

541

047

044

843

7

427

454

302 0 0

227

124

205

275

297

470

470

443 0 0 0 0

211

378

410

437

432

459

432

410

9,03

3

Delaware R

iver

at M

onta

gue

Segregation

of f

low

Date

Apr.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

1200

of

date sh

own, ex

cept

23

hour

s Ap

r. 26.

Col.

3-24 h

ours en

ding

240

0 on

e da

y la

ter, ex

cept

23

hours

Apr.

26.

Col.

4-24 h

ours

beginning

Col.

5-24 h

ours b

eginning

Col.

6-24 h

ours

beginning

1500

one

da

y later, ex

cept

23

hour

s Ap

r. 25.

0800

of

date s

hown,

exce

pt 2

3 hours

Apr.

26.

1200

of

date s

hown

, ex

cept

23

hour

s Apr. 26.

Controlled r

eleases

N.Y.

C. reservoirs

Directed

| Ot

her

7 L

80

111

0 13

40

162

0 16

20

162

0 17

20

160

0 16

00

162

0 161

0 16

00

161

0 15

80

161

0 15

9

0 161

0 15

90

160

0 161

0 16

3

0 16

30

163

0 16

00

160

0 16

0

0 161

0 16

00

160

0 15

90

160

0 4,755

Powe

r-pl

ants 9

1,354

1,36

31,

442

1,415

1,395

427

454

535 0 0

227

124

205

275

300

470

470

1,143

895 0 0

468

693

783

1,349

1,38

243

245

91,

357

1,37

320

,790

Col.

8

= Co

l. 2

+ Col. 3

+

Comp

uted

uncon­

trol

led

10 7,46

56,

743

5,92

65,

343

4,723

5,141

6,18

65,

825

5,32

84,

879

4,473

4,345

4,04

73,714

3,491

4,12

99,671

11,097

8,024

6,96

7

6,43

76,429

7,25

77,

527

10,7

91

10,857

9,60

88,

641

7,224

6,27

7198,565

Col.

4.

Total

11 8,930

8,24

07,530

6,92

06,

280

5,74

06,

800

6,52

05,490

5,04

0

4,86

04,

630

4,41

04,

150

3,950

4,76

010,300

12,400

9,08

07,130

6,60

07,060

8,11

08,

470

12,300

12,4

0010

,200

9,26

08,

740

7,81

022

4,11

0

Col.

9 =

Col.

5

+ Col. 6.

Col. 10

=

Col.

11

- Co

l. 7

-Co

l. 8

-Col. 9.

Col. 11-24 h

ours

of

calendar

day

shown,

exce

pt 23

hour

s Ap

r. 27

.

Tab

le 1

5.

- C

ontr

olle

d re

leas

es

for

rese

rvoir

s in

th

e up

per

Del

awar

e R

iver

bas

in

and

segr

egat

ion

of

flow

of

Del

awar

e R

iver

at

Mon

tagu

e,

N.J

. -

cont

inue

d (R

iver

Mas

ter

dai

ly o

pera

tion

re

cord

)M

ean

cubi

c fe

et p

er s

econ

d fo

r 24

hou

rs

Con

trol

led

rele

ases

fr

om N

ew

Dir

ecte

dD

ate

I A

mou

nt19

86

1 1

Apr

. 28

0

29

030

0

May

1

02

0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

011

0

12

0

13

014

0

15

7316

61

17

0

18

019

0

2'0

021

0

22

0

23

024

0

25

026

0

27

028

0

Tot

al

134

Pep

acto

n

1

'70

'

70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 66 73 70 70 70 70 71 71 71 71 70 70 70 702,

173

Col

. 2-2

4 h

ours

beg

inni

ng

Yor

k C

ity

rese

rvo

irs

Can

nons

vil

le

Nev

ersi

nk

3 4

45

4546

45

46

4546

46

46

45

46

4546

45

46

4546

45

46

45

46

4546

45

46

4546

46

46

46

46

4646

46

46

4646

46

46

46

46

4646

46

46

4646

46

46

46

46

4646

46

46

4646

46

46

4646

45

1,42

5 1,

413

1200

of

date

sh

own.

Con

trol

led

rele

ases

from

pow

er r

eser

voir

sL

ake

Dat

e W

alle

n-pa

upac

k5

Apr

. 30

95

2M

ay

1 95

52

1,19

23

954

4 73

8

5 79

96

946

7 92

88

930

9 96

7

10

011

0

12

466

13

014

0

15

016

0

17

018

0

19

0

20

021

0

22

918

23

946

24

0

25

026

0

27

913

28

976

29

984

30

1 ,0

4115

,605

Mon

gaup

Res

ervo

ir

DC6

Del

awar

e R

iver

at

Mon

tagu

eS

egre

gati

on o

f fl

owC

ontr

olle

d re

leas

esN

.Y.C

. re

serv

oir

s I

Pow

er-

ite

Dir

ecte

d |

Oth

er

] pla

nts

7 I

8 |

950

2 M

ay

1 0

160

1,45

443 17

3 0 38 194

275

194

221

194 0 49 205

162 70 200

130 0 76 275

292

157

319

356

448

319

405

346

308

448

356

6,75

5

Col

. 3

-24

hou

rs

endi

ng 2

400

one

day

late

r.C

ol.

4-2

4 h

ours

beg

inni

ngC

ol.

5-2

4 h

ours

beg

inni

ngC

ol.

6-2

4

hour

s be

ginn

ing

1500

one

day

late

r.08

00 o

f dat

e sh

own.

1200

of

date

sh

own.

2 0

161

998

3 0

161

1,36

54

0 16

2 95

45

0 16

1 77

6

6 0

161

993

7 0

161

1,22

18

0 16

1 1,

122

9 0

161

1,15

110

0

161

1,16

1

11

0 16

1 0

12

0 16

1 49

13

0 16

1 67

114

0

162

162

15

0 16

2 70

16

0 16

2 20

017

0

162

130

18

73

85

019

61

10

4 76

20

0 16

2 27

5

21

0 16

2 29

222

0

162

157

23

0 16

2 1,

237

24

0 16

3 1,

302

25

0 16

3 44

8

26

0 16

3 31

927

0

163

405

28

0 16

2 1,

259

29

0 16

2 1,

284

30

0 16

2 1,

432

31

0 16

1 1,

397

134

4,87

7 22

,360

Col

. 7

= C

ol.

2 +

Col

. 3

+re

spon

se

to C

ol.

1C

ol.

8 =

Col

. 2

+ C

ol.

3 +

Col

. 9

- C

ol.

5 +

Col

. 6.

Col

. 10

=

Col

. 11

-

Col

. 7

-

Com

pute

dun

con­

tro

lled

T

otal

10

115,

336

6,95

04,

891

6,05

04,

334

5,86

03,

844

4,96

03,

363

4,30

0

3,34

6 4,

500

3,19

8 4,

580

2,97

7 4,

260

2,70

8 4,

020

2,41

8 3,

740

2,32

9 2,

490

2,15

0 2,

360

1,88

8 2,

720

1,86

6 2,

190

1 ,6

98

1 ,9

30

1,66

8 2,

030

1,80

8 2,

100

2,68

2 2,

840

2,72

9 2,

970

2,21

3 2,

650

2,70

6 3,

160

11,7

81

12,1

0017

,201

18

,600

12,9

35

14,4

0011

,489

12

,100

9,81

8 10

,300

8,34

2 8,

910

6,63

9 8,

060

5,48

4 6,

930

4,44

6 6,

040

3,54

2 5,

100

151,

829

179,

200

Col

. 4

in. C

ol.

4 -

Col

. 7.

C

ol.

8 -

Col

. 9.

Col

. 11-2

4 h

ours

of

cal

enda

r da

y sh

own.

Table

15.

- Co

ntrolled r

eleases

for

reservoirs in th

e upper

Delaware R

iver b

asin

and

segr

egation

of flow o

f Delaware R

iver a

t Mo

ntag

ue,

N.J.

-

contin

ued

(Riv

er M

aste

r da

ily

oper

atio

n re

cord

)Me

an c

ubic f

eet

Cont

roll

ed r

elease

s from New

Dire

cted

Date

P Ar

nbun it

1986

L 1

May

29

030

031

0

June

1 0

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

10

011

0

12

0

13

014

0

15

016

017

0

18

019

020

0

21

022

0

23

024

025

026

126

27

310

Tota

l 436

Pepa

cton

2 71 68 70 70 70 70 70 70 70 70 68 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 71 71 702,099

Col.

2-24 h

ours b

eginning

York

Cit

y re

serv

oirs

Carm

onsv

ille

3"

' " 46

" "

46 46 46 46 46 53 46 46 46 46 46 46 46 46 46 381

379

364

354

367

376

377

376

376

376

376

376

376

376

5,97

3

Neversink

4"

" 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 46 45 45 43 45 45 45 45 45 45

1,349

per

seco

nd f

or 2

4 hours

Cont

roll

ed re

leas

esfr

om power r

eservoirs

Date

May

30Ju

ne

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Lake

Wallen-

paupack

50 0 0 0 0

582

1,549

1,708

1,709

1,588

928

1,028

1,433

1,45

11,

425

1,46

01,

360

1,413

1,40

81,

465

963

911

925

930

810

579

599

688 0 0

26,9

12

Mongaup

Reservoir

6 216

"43 265

265

189

259

464

437

432

459

518

518

486

410

421

459

508

459

454

448

454

454

427

470

324

405

410

437 49 54

11,1

94

Date

June

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

1200 o

f date s

hown

.Co

l. 3-24 h

ours en

ding

2400

one

day

late

r.Co

l. 4-24 h

ours b

eginning

Col.

5-24 h

ours b

egin

ning

Col.

6-24 h

ours b

egin

ning

1500

one d

ay l

ater.

0800

of

date s

hown

.1200 o

f da

te s

hown

.

Delaware R

iver

Segregationat

Mon

tagu

eof f

low

Cont

roll

ed r

elea

ses

N.Y.

C. reservoirs

Directed

I Other

7 I

80

162

0 15

90

161

0 161

0 161

0 161

0 16

80

161

0 161

0 161

0 15

90

161

0 161

0 161

0 161

0 161

0 49

60

494

0 47

90

469

0 48

30

491

0 49

20

489

0 49

1

0 49

10

491

0 49

2126

366

310

181

436

8,98

5

Col.

7 =

Col.

2 +

response

Col.

8 =

Col.

2

+Co

l.

9 =

Col.

5 +

Col.

10

-

Col.

11

Col.

11-24 h

ours

Power-

plan

ts 9 216 43 265

265

189

841

2,013

2,14

52,141

2,047

,446

,546

,919

,861

,846

,919

,868

1,87

21,862

1,913

,417

,365

,352

,400

,134 984

1,00

91,125 49 54

38,106

Col.

3 +

to C

ol.

1Co

l. 3 +

Col. 6.

- Co

l. 7

-

Comp

uted

unco

n­tr

olle

d10 3,53

23,

398

2,97

42,674

2,280

8,94

816

,019

12,594

11,1

988,

792

7,405

9,89

317

,520

13,478

9,993

8,62

07,

636

6,954

5,68

94,688

3,98

03,374

2,97

62,561

2,335

2,00

51,840

1,643

1,759

1,595

188,

353

Col.

4

in.

Total

11 3,910

3,600

3,400

3,100

2,63

0

9,95

018

,200

14,900

13,5

001 1

,000

9,01

011,600

19,6

0015

,500

12,000

10,7

0010

,000

9,32

08,

030

7,070

5,88

05,230

4,82

04,

450

3,96

0

3,480

3,340

3,26

02,

300

2,14

023

5,88

0

Col.

4

- Co

l. 7.

Col.

8

-Col. 9

.of

cal

enda

r da

y sh

own.

Table

15.

- Co

ntro

lled re

leas

es fr

om r

eservoirs

in the

upper Delaware R

iver

bas

inan

d se

greg

ation

of flow of De

lawa

re R

iver a

t Montague,

N.J.

- continue

d _______________(River M

aste

r daily

oper

atio

n record)________________

Mean

cub

ic f

eet per

seco

nd f

or 24

hours

Controlled r

elea

ses

from

New

Yor

k Ci

ty res

ervoirs

Directed

Date

1986

jJu

ne 2

8 29

30

July

1 2

Amount

1

Pepacton

2

Cann

onsv

ille

3

Neve

r sin

k

40

70

376

45

0 70

376

45

0 71

376

45

0 71

374

45

0 71

374

45

Controlled releases

from

power r

eservoirs

Date

June

30

July

1 2 3 4

Lake

Wallen-

paupack

5

Mongaup

Rese

rvoi

r6

Delaware R

iver

Se

gregation

Date

at M

ontague

of f

low

Cont

rolled r

eleases

N.Y.

C. reservoirs

Directed

743

7 20

5 July

1 0

680

259

2 0

709

286

3 0

744

238

40

0 167

50

Othe

r8 49

1 49

1 49

2 49

0 49

0

Powe

r-

plan

ts9

Computed

unco

n­

trol

led

10To

tal

1164

2 1,447

2,580

939

1,680

3,110

995

2,80

3 4,

290

982

2,20

8 3,

680

167

1,723

2,38

0

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28T

ota

l

Col

. 2

Col

. 3

Col

. 4

Col

. 5

Col

. 6

0 0 0 0 0 0 074

256

1 0 0 0 0 0 0 0 0 0 0 77 233

850

782

290 84 0

3,61

9-

24 h

ours

- 24

hou

rs-

24 h

ours

- 24

hou

rs-

24 h

ours

71 71 70 70 122

121

113 90 68 70 70 70 70 70 101

101

101

101 96 70 70 99 99 99 99 99

2,63

4be

ginn

ing

1200

374

374

374

435

493

493

492

611

447

374

374

376

374

374

424

563

563

453

373

373

373

692

616

537

487

487

13,7

82

1o

f da

te

show

n.

45 45 50 90 90 88 71 46 46 46 45 45 46 70 70 70 70 63 45 48 71 71 71 71 70 67

,835

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

0 090

770

170

2

702

713 0 0

486

442

727

707

1,06

7 0 042

641

644

042

4

439 0 0

427

458

434

13,1

88

238

151

259

481

281

243

232

243 81 292

464

481

394

378

378

362

416

437 0 0 0 0 0 0 0

205

7,17

1

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

0 0 0 0 0 0 074

756

1 0 0 0 0 0 0 0 0 0 0 77 233

862

786

290 84 0

3,64

0C

ol.

7ai

ding

240

0 on

e da

y la

ter.

begi

nnin

g 15

00be

ginn

ing

0800

begi

nnin

g 12

00

one

day

late

r.o

f da

te

show

n.of

date

sh

own.

Col

. 8

Col

. 9

Col

. 10

Col

. 11

490

490

494

595

705

702

676 0 0

490

489

491

490

514

595

734

734

617

514

414

281 0 0

417

572

653

14,6

11=

Col

. 2

+re

spon

se=

Col

. 2

+-

Col

. 5

+=

Col

. 11

- 24

hou

rs

238

151

1,16

61,

182

983

945

945

243 81 778

906

1,20

81,

101

1,44

537

8

362

842

853

440

424

439 0 0

427

458

639

20,3

59C

ol.

3 +

to C

ol.

Col

. 3

+C

ol.

6.-

Col

. 7

1,46

2 2,

190

1 ,2

69

1 ,9

101,

150

2,81

01,

053

2,83

01,

112

2,80

0

983

2,63

01,

099

2,7?

Q1,

810

2,80

03,

678

4,32

03,

312

4,58

0

2,45

5 3,

850

1,85

1 3,

550

1,63

9 3,

230

1,44

1 3,

400

1,61

7 2,

590

1,53

4 2,

630

1,24

4 2,

820

1,14

0 2,

610

1,12

6 2,

080

935

1 ,8

50

857

1,81

01,

158

2,02

01

,794

2,

580

1,75

6 2,

890

1,80

6 2,

920

4,51

8 5,

810

53,6

60

92,2

70C

ol.

4 -

in1. C

ol.

4 -

Col

. 7.

- C

ol.

8 -

Col

. 9.

of

cale

ndar

da

y sh

own.

Tab

le 1

5.

- C

ontr

olle

d re

leas

es

from

res

ervoir

s in

th

e up

per

Del

awar

e R

iver

bas

in

and

segr

egat

ion

of

flow

of

Del

awar

e R

iver

at

Mon

tagu

e,

N.J

. -

cont

inue

d (R

iver

Mas

ter

dai

ly o

pera

tion

re

cord

)M

ean

cubi

c

Con

trol

led

rele

ases

fr

om N

ew

Dir

ecte

dD

ate

1986

July

29 30 31

Aug

. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Tot

al Col

. 2

Col

. 3

Col

. 4

Col

. 5

Col

. 6

Am

ount

10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

292 0 0 0 0 0

160

160 0 0 0 0 0

760

1,37

2

Pep

acto

n

2 99 71 70 70 70 70 71 71 71 71 71 71 70 70 71 71 71 71 70 70 70 70 70 70 70 70 70 71 71 70 712,

213

- 24

hou

rs b

egin

ning

Yor

k C

ity

rese

rvoir

s f

Can

nons

vill

e

3 430

371

371

371

371

373

373

371

371

374

373

373

373

373

373

373

373

373

373

209 43 43 43 43 43 210

207 43 43 43 657

8,76

0

Nev

ersi

nk

Da

4

feet

per

sec

ond

for

24 h

ours

Con

trol

led

rele

ases

ra

n po

wer

res

erv

oir

sL

ake

te

Wal

len-

pa

upac

k5

48

July

31

471

48

Aug

46 46 46 46 46 48 46 45 45 45 45 46 45 45 46 45 45 46 46 45 46 45 45 46 46 46 42 45 451,

415

. 1

405

2 0

3 0

4 40

0

5 36

86

275

7 41

58

413

9 62

0

10

011

1,

149

12

1,13

713

40

214

0

15

1,14

316

0

17

874

18

1,18

519

69

5

20

658

21

711

22

714

23

024

0

25

701

26

813

27

706

28

719

29

713

30

015

,687

Mon

gaup

R

eser

voir

6"

24T

135 0 76 270

286

248

205

383 59 157

146 0 16 238

205

178 97 243

135 65 200

178 0 92 178

216

157

189

167 0

4,76

2

Del

awar

e R

iver

S

egre

gati

on

!_ D

ate

Aug

. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

1200

of

date

sh

own.

at M

onta

gue

of

flow

Con

trol

led

rele

ases

N.Y

.C.

rese

rvo

irs

Dir

ecte

d7

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 029

4 0 0 0 0 015

815

8 0 0 0 0 077

31,

383

Col

. 7

=-

24 h

ours

en

ding

240

0 on

e da

y la

ter.

- 24

hou

rs

begi

nnin

g-

24 h

ours

be

ginn

ing

- 24

hou

rs b

egin

ning

1500

one

da

y la

ter.

0800

of

date

sh

own.

1200

of

date

sh

own.

Col

. 8

=C

ol.

9 -

Col

. 10

=

Col

. 11

-

Oth

er8 57

749

048

748

748

7

489

490

490

488

490

489

489

488

489

489

489

490

195

488

325

159

158

159 0 0

326

323

160

156

158 0

11,0

05

Col

. 2

+re

spon

se

Pow

er-

pla

nts

9 714

540 0 76 670

654

523

620

796

679

157

1,29

51,

137

418

238

1,34

817

897

11,

428

830

723

911

892 0 92 879

1,02

986

390

888

0 020

,449

Col

. 3

+to

C

ol.

1C

ol.

2 -i-

Col

. 3

+

Com

pute

d un

con­

tr

oll

ed

104,

709

4,39

05,

313

4,21

73,

253

2,64

72,

557

4,72

03,

356

2,65

1

2,54

42,

476

2,07

51,

803

1,54

3

1,39

31,

472

1,68

01,

984

2,08

5

1,83

81,

591

1,50

91,

642

1,63

0

1,45

51,

288

1,26

71,

066

1,02

265

771

,83

3

Tota

l11 6,00

05,

420

5,80

04,

780

4,41

0

3,79

03,

570

5,83

04,

640

3,82

0

3,19

04,

260

3,70

02,

710

2,27

0

3,23

02,

140

3,14

03,

900

3,24

0

2,72

02,

660

2,56

01,

800

1,88

0

2,66

02,

640

2,29

02,

130

2,06

01,

430

104,

670

Col

. 4

- in

. Col

. 4

- C

ol.

7.C

ol.

5 +

Col

. 6

.C

ol.

1124

hou

rs-

Col

. 7

-C

ol.

8 -

Col

. 9.

of

cale

ndar

da

y sh

own.

Tab

le

15.

- C

ontr

olle

d re

leas

es

from

re

serv

oir

s in

th

e up

per

Del

awar

e R

iver

bas

in

and

segr

egat

ion

of f

low

of

Del

awar

e R

iver

at

Mon

tagu

e,

N.J

. -

cont

inue

d (R

iver

Mas

ter

dai

ly o

pera

tion

re

cord

)Mean c

ubic

Cont

roll

ed r

elea

ses

from

New

Directed

Date

| Amount

1986

|

1Aug.

29

896

30

837

31

0Se

pt.

1 84

2 10

7

3 220

4 1,

143

5 1,063

6 0

7 0

8 158

9 24

110

312

1 1

1 ,223

12

1 ,537

13

463

14

471

15

524

16

862

17

904

18

1,54

419

1,

331

20

1 ,232

21

1,15

922

998

23

940

24

997

25

718

26

855

27

890

Total

21 ,709

Pepacton

2 104

101 70 70 70 70 99 101 71 68 70 68 70 102

108 71 71 71 71 71 70 70 70 70 70 70 70 70 70 70

2,297

Col. 2-24 ho

urs

beginning

York C

ity

reservoi

rs

f

Cann

onsv

ille

3 733

671 43 43 43 108

1,01

0928 43 43 43 127

199

1,06

21,

373

340

365

418

753

794

1,42

51,

214

1,12

01,044

885

826

880

603

743

778

18,6

57

Neve

rsin

k Da

L_

4

feet

per s

econ

d fo

r 24 h

ours

Controlled releases

rom power

reservoirs

Lake

te

Wa

llen

- pa

upac

k5

70

Aug.

31

0

70

Sept

. 1

246 53 45 45 48 46 46 46 48 45 45 68 70 46 46 46 46 48 45 46 46 45 45 45 45 45 45 46

1,476

2 69

93

729

4 71

9

5 691

6 0

7 0

8 70

29

703

10

727

11

723

12

709

13

014

0

15

726

16

703

17

705

18

357

19

356

20

021

0

22

023

0

24

0

25

026

0

27

028

0

29

189

9,440

Mong

aup

Reservoir

60 59 119

265

243

184 0 43 130

173

243

173

162

173 16 227

140

232

238 92 0 54 151 92 97 173

157 0 32 216

3,88

4

Delaware R

iver

Segregation

Date

Sept.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

1200

of

date show

n.

at M

onta

gue

of f

low

Controlled r

elea

ses

N.Y.

C. reservoirs

Directed

7 907

842 0 84 107

223

1,15

71,075 0 0

161

240

314

1,232

1,551

457

482

535

870

913

1,540

1,33

01,236

1,15

91,000

941

995

718

858

894

21 ,82

1

Col.

7 =

Col. 3-24 h

ours

en

ding

240

0 on

e da

y la

ter.

Col. 4-24 hour

s be

ginn

ing

Col. 5-24 h

ours

beginning

Col. 6-24 ho

urs

beginning

1500 o

ne d

ay la

ter.

0800

of

date

show

n.12

00 o

f da

te show

n.

Col.

8

=Co

l.

9 -

Col.

10 =

Col.

11

-

Other

8 0 015

9 82 51 0 0 016

015

7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

609

Powe

r-

plants

90 61 818

994

962

875 0 43 832

876

970

896

871

173 16 953

843

937

595

448 0 54 151 92 97 173

157 0 32 405

13,324

Col.

2

+ Co

l. 3

+

Computed

unco

n­

trolled

1081

379

71,133

1,200

840

812

723

482

908

767

679

644

635

545 53 620

525

478

405

659

580

476

493

699

703

586

828

1 ,062 780

631

20,5

56

Total

11 1,720

1,700

2,110

2,36

01,960

1,91

01,880

1,600

1,90

01,800

1,810

1,780

1,820

1,950

1,620

2,03

01,850

1,950

1,870

2,02

0

2,12

01,860

1,880

1,950

1,800

1,700

1,980

1,780

1,67

01,

930

56,3

10

Col. 4

-

inresponse to

Co

l .

1 .

Col.

2

+ Co

l. 3

+Col. 4

-

Col.

7.

Col.

5

+ Co

l. 6.

Col.

11-

Col. 7

-Col. 8

-

Col.

9.

24 h

ours

of calendar da

y sh

own.

Tabl

e 15.

- Controlled r

elea

ses

from

reservoirs

in th

e upper De

lawa

re R

iver

basin

and

segregation

of f

low

of D

elaw

are

River

at M

ontague, N.

J. -

continue

d (R

iver

Master

daily

operation

record)

Mean

cubic f

eet

per

seco

nd fo

r 24

hours

Cont

roll

ed r

eleases

from

New

York

City

res

ervoir

s

Directed

Date

1986

Sept. 28

29

30

Oct.

1 2

Amount

1

Pepa

cton

2

Cannonsville

3

Neversink

4

Controlled r

eleases

from

power r

eser

voir

s

Date

Lake

Wall

en-

paupack

5

Mongaup

Reservoir

6

Delaware Riv

er a

t Montague

Segregation of

flow

Date

Controlled r

eleases

N.Y.

C. reservoirs

Dire

cted

7826

70

715

45

Sept.30

568

184

Oct.

1 83

0 82

3 70

712

45

Oct.

1

220

124

2 82

7 55

6 70

450

45

2 23

8 146

3 56

5 71

7 70

602

45

3 28

7 97

4

717

561

70

447

45

4 0

0 5

562

Other

80 0 0 0 0

Power-

plan

ts9

Comp

uted

uncon­

trol

led

10To

tal

1175

2 69

8 2,280

344

639

1,81

0 38

4 951

1 ,900

384

2,029

3,130

0 4,

668

5,230

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Tota

lC

ol.

2C

ol.

3C

ol.

4C

ol.

5C

ol.

6

0 0 0 0 0 054

050

019

430

4 0 0 052

534

7 0 043

7 0 86 990

452

237

345

359

267

9,06

6-

24 h

ours

- 24

hou

rs-

24 h

ours

- 24

hou

rs-

24 h

ours

70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 73 70 70 70

2,17

3beg

innin

g 1

200

42 42 54 42 42 42 430

391 79 190 42 42 42 422

269 42 42 317 29 42 867

336

138

231

246

156

7,54

3o

f d

ate

45 45 45 46 48 45 45 45 43 45 45 45 43 45 45 45 45 45 45 45 45 46 45 45 45 45

1,39

6sh

own,

ex

cept

endi

ng 2

400

one

day

late

r,

exce

pt 2

5be

ginn

ing

1500

begi

nnin

g 08

00be

ginn

ing

1200

one

day

of

dat

eo

f d

ate

late

r,

exce

ptsh

own,

ex

cept

show

n,

exce

pr

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

25 h

ours

023

022

8 024

0

246 0 0

356

351

344

349

317 0 0

471

475 0

483

440 0 0 0 0 0 0

5,84

3O

ct.

25.

16 184

157

216

259

140 0 0 59 346

367

259

151 0 32 243

400

367

324

173 0

184

351

135

135

151

5,20

0

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

0 0 0 0 0 054

550

619

230

5 0 0 053

734

7 0 043

2 0 86 982

452

256

346

361

271

9,11

9C

ol.

7ho

urs

Oct

. 25

.25

ho

urs

25 h

ours

25

hour

s

Oct

. 24

.O

ct.

25.

Oct

. 25

.

Col

. 8

Col

. 9

Col

. 10

Col

. 11

157

157

169

158

160

157 0 0 0 0

157

157

155 0 37 157

157 0

144 71 0 0 0 0 0 0

1,99

3=

Col

. 2

+to

Col

. 1

= C

ol.

2 +

= C

ol.

5 +

= C

ol.

11

--

24 h

ours

exce

pt 2

5

1641

438

521

649

9

386 0 0

415

697

711

608

468 0 32 714

875

367

807

613 0

184

351

135

135

151

11,0

43C

ol.

3 +

Col

. Col

. 3

-i- C

olC

ol.

6.

3,34

72,

339

1,84

61,

476

1,24

1

1,22

791

51,

004

1,19

31,

328

1,98

21,

645

1,44

71,

143

1,18

4

1,10

91,

018

901

1,07

91,

040

738

1,12

41,

583

1,49

91,

204

1,24

8

44,8

45.

4 in

. 4

-

Col

. 7

- C

ol.

8 -

of c

alen

dar

hour

s O

ct.

3,52

02,

910

2,40

01,

850

1,90

0

1,77

01,

460

1,51

01,

800

2,33

0

2,85

02,

410

2,07

01,

680

1,60

0

1,98

02,

050

1,70

02,

030

1,81

0

1,72

01,

760

2,19

01,

980

1,70

01,

670

67,0

00re

spon

se

Col

. 7.

Col

. 9.

day

show

n,26

.

Tab

le 1

5.

- C

ontr

olle

d re

leas

es

from

re

serv

oir

s in

th

e up

per

Del

awar

e R

iver

bas

in

and

segr

egat

ion

of

flow

of

Del

awar

e R

iver

at

Mon

tagu

e,

N.J

. -

cont

inue

d (R

iver

Mas

ter

dai

ly o

pera

tion

re

cord

)M

ean

cubi

c fe

et j

jer

Con

trol

led

rele

ases

fro

m N

ew

Dir

ecte

dD

ate

I A

mou

nt19

86

L 1

Oct

. 29

30

630

48

931

59

2N

ov.

1 73

32

767

3 83

84

509

5 16

76

113

7 0

8 0

9 0

10

011

0

12

0

13

014

0

15

016

0

17

0

18

019

0

20

021

0

22

0

23

024

0

25

026

0

27

0T

otal

4,

514

Pep

acto

n

2 70 70 135

141

141

141

141 50 48 53 48 50 51 51 48 50 50 50 50 51 50 50 50 50 50 50 50 50 50 50

1,98

9

Col

. 2-2

4

hour

s be

ginn

ing

Yor

k C

ity

rese

rvoir

s

Can

nons

vi l

ie

3 192

354

396

531

565

631

342 94 42 34 34 34 34 34 34 34 34 34 34 34 34 34 40 34 34 36 36 34 36 36

3,87

5

Nev

er si

nk

^ 4 45 63 67 68 68 67 26 26 26 26 26 28 28 28 26 23 25 26 25 28 25 26 28 22 23 25 25 26 26 26 99

7

Con

trol

led

from

pow

er LaD

ate

Wal

jpau

Oct

. 31

Nov

. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

2,

seco

nd fo

r 24

hou

rsre

leas

esre

serv

oir

ske le

n-

Mon

gaup

pack

R

eser

voir

5 6

0 14

00

00

160

146

0 18

4

0 17

80

146

0 10

30

00

81

0 23

80

367

0 34

00

194

0 10

8

0 0

0 32

0 36

70

286

0 41

6

0 39

40

383

0 38

30

421

0 41

6

549

410

572

405

555

405

579

389

590

394

845

7,34

2

Del

awar

e R

iver

, S

egre

gati

on

Dat

e

Nov

. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

1200

of

date

sh

own.

at M

onta

gue

of

flow

Con

trol

led

rele

ases

N.Y

.C.

rese

rvo

irs

Dir

ecte

d7 30

748

759

874

077

4

839

509

170

116 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

4,54

0

Col

. 7

=C

ol.

3 -

24

hour

s en

ding

240

0 on

e da

y la

ter.

Col

. 4-2

4 h

ours

beg

inni

ngC

ol.

5-2

4 h

ours

beg

inni

ngC

ol.

6-2

4

hour

s be

ginn

ing

1500

one

day

la

ter.

0800

of

date

sh

own.

1200

of

date

sh

own.

Col

. 8

=C

ol.

9 =

Col

. 10

=

Oth

er8

0 0 0 0 0 0 0 0 011

3

108

112

113

113

108

107

109

110

109

113

109

110

118

106

107

111

111

110

112

112

2,32

1

Pow

er-

pla

nts

9 140 0 16 146

184

178

146

103 0 81 238

367

340

194

108 0 32 367

286

416

394

383

383

421

416

959

977

960

968

984

10,1

87

Col

. 2

+ C

ol.

3 +

to C

ol.

1.C

ol.

2 +

Col

. 3

+

Com

pute

dun

con­

tro

lled

10 1,08

396

388

684

484

2

1,01

31

,555

2,11

75,

174

10,5

06

7,69

46,

091

5,29

74,

473

3,66

4

3,29

33,

129

3,55

34,

165

4,05

1

10,6

9716

,907

11 ,

199

9,22

310

,377

9,23

022

,512

20 ,5

3013

,520

9,80

420

4,39

2

Col

. 4

in

Tot

al 11 1,53

01,

450

1,50

01,

730

1,80

0

2,03

02,

210

2,39

05,

290

10,7

00

8,04

06,

570

5,75

04,

780

3,88

0

3,40

03,

270

4,03

04,

560

4,58

0

11 ,

200

17,4

0011

,70

09,

750

10,9

00

10,3

0023

,600

21 ,

600

14,6

0010

,900

221

,440

resp

onse

Col

. 4

- C

ol.

7.C

ol.

5 +

Col

. 6.

Col

. 11

- C

ol.

7 -

Col

. 8

-C

ol.

9.C

ol.

11-2

4 h

ours

of

ca

lend

ar

day

show

n.

Table 16. - Consumption of Water by New York City - 1940 to 1986.Data furnished by New York City, Department of

Environmental Protection, Bureau of Water Supply

Year1940

41424344

194546474849

195051525354

195556575859

196061626364

196566676869

197071727374

197576777879

198081828384

198586

Consumption in City proper

(mgd)922.7964.2906.7942.7

1,004.91,056.21,117.11,159.01,172.31,166.9953.3

1,041.91,087.01,093.91,063.41,109.91,111.31,169.01,152.91,204.31,199.41,221.01,207.61,218.01,189.21,052.11,044.91,135.31,242.01,328.71,400.31,423.61,412.41,448.91,441.81,415.01,435.01,483.01,479.41,513.01,506.31,309.51,383.01,424.21,465.21,325.41 ,351 .1

(gpcd) I/124130124133144146146149150149121131136135131136136.2143140.8146.8153.9156.0153.5154.1149.8131.9130.4141.0153.6163.5177.3182.1182.6189.4190.5189.0193.9202.6204.4211.5213.0184.6*194.2*199.4*204.4*184.4*187.3*

Furnished to outside communities

(mgd)21.624.821.521.526.522.024.130.431.536.229.128.132.744.646.345.348.957.249.660.358.964.068.876.779.471.273.271.078.280.190.487.983.095.496.392.195.8104.7103.0104.6110.1100.0104.8112.6113.9106.5115.2

Total (mgd)944.3989.0928.2964.2

1 ,031 .41,078.21,141.21,189.41,203.81,203.1982.4

1,070.01,119.71,138.51,109.71,155.21,160.21,226.21,202.51,264.61,258.31,285.01,276.41,294.71,268.61,123.31,118.11,206.31,320.21,408.81,490.71,511.51,495.41,544.31,538.11,507.11,530.81,587.71.582.41,617.61,616.31,409.51,487.81,536.81,579.11 ,431 .91,466.3

Annual (t£)

345.614360.985338.793351 .933377.492393.543416.538434.131440.591439.132358.576390.550409.810415.552405.040421 .648424.633447.563438.912461 .579460.529469.022465.896472.582464.295409.995408.128440.302483.175514.229544.116551 .695547.340563.681561 .409550.093560.264579.510577.566590.426591 .582514.475543.060561.010577.963522.656535.200

I/ Gallons per Capita per day, (1970-85 revised).*Provisional

66

FIG

UR

E

3-U

NC

ON

TR

OLLE

D

CO

MP

ON

EN

T,

DE

LA

WA

RE

R

IVE

R

AT

M

ON

TA

GU

E,

N.J

.19

86S

EP

TE

MB

ER

NO

VE

MB

ER

5 10

15

20

2510

15

20

2510

15

20

25

1O

15

20

2510

15

20

25

10

15

20

25

-

Fo

reca

st

un

con

tro

lled

ru

no

ff

Co

mp

ute

d

un

con

tro

lled

ru

no

ff

MO

NT

HL

Y

TO

TA

L 5

.94

4

5-Y

EA

R

AV

G.

3.9

5"

5 10

15

20

25

30

5 10

15

20

25

31

5 10

15

20

25

31

5 10

15

20

25

30

5 1O

15

2O

25

31

5 10

15

20

25

z o o z o

oo

DO UJ O <

cc O

Unsh

aded

are

a indicates

rang

ebe

twee

n hi

ghes

t an

d lowest

stor

age prior

to 1

986

repo

rt y

ear.

Medi

an pri

or t

o 1986 r

epor

t year

Repo

rt ye

ar 1986

110

100

- 90

80 t O <

a < O

70

- 60

- 50

- 40 30 20 10

u_ O Z

UJ o

cc UJ a UJ O <

cc

O

Figure 4

. - Co

mbin

ed s

tora

ge i

n Pepacton,

Cannonsville,

and

Neve

rsin

k Re

serv

oirs

on

first

day

of m

onth,

June

1967

to De

cemb

er 1

986

PL

AT

E

I. C

OM

PO

NE

NT

S

OF

F

LOW

, D

EL

AW

AR

E

RIV

ER

A

T

MO

NT

AG

UE

, N

.J.

1986

N.Y

.C.

RE

SE

RV

OIR

S

CD

P

OW

ER

R

ES

ER

VO

IRS

EM

U

NC

ON

TR

OL

LE

D

RU

NO

FF

U.S

. G

EO

LO

GIC

AL

S

UR

VE

YO

FF

ICE

O

F

TH

E

DE

LA

WA

RE

R

IVE

R

MA

ST

ER

, M

ILF

OR

O,

PA

.

Section III WATER QUALITY OF THE DELAWARE RIVER ESTUARY

75°30' 75°00'

°r\r\ '40°00

39°30 f

39°00'

Trenton

-N-

DELAWARE

Cape Henlopen

EXPIANATTON Continuous monitor site

1-Ship John Shoal Lighthouse2-Reedy Island Jetty3-Chester4-Fort Mifflin5-Benjamin Franklin Bridge

(Pier 11 North)6-Trenton

o Monthly sample site

A-Marcus Hook B-Eddystone C-Paulsboro D-League Island

(U.S. Naval Base) E-Wharton Street F-Benjamin Franklin Bridge G-Lehigh Avenue H-Allegheny Avenue I-Betsy Ross Bridge J-Tacony-Palmyra Bridge K-Torresdale Intake L-Penn Salt Pier M-Burlington-Bristol Bridge N-Fieldsboro

12i

16 20 MILES

10 20 30 KILOMETERS

Figure 5.- Delaware River Estuary 72

Section III

WATER QUALITY OF THE DELAWARE RIVER ESTUARY By Karen L. Vogel

INTRODUCTION

This section describes the water-quality monitoring program carried out by the U.S. Geological Survey in the Delaware Estuary during the 1986 report year. Also presented here are some of the data that were obtained by this program and a brief discussion of the significance of the data.

WATER-QUALITY MONITORING PROGRAM

Water quality of the Delaware River and Estuary was monitored between Trenton, N.J., and Ship John Shoal Lighthouse, N.J. Data were acquired con­ tinuously by electronic instruments at six monitor sites, one at Trenton, just upstream of the head of tidewater and at five sites in the estuary (fig. 5). The monitors at Chester, Pa., Fort Mifflin, Pa. and Benjamin Franklin Bridge were not operated from early December 1985 through the end of March 1986. Due to instrument malfunctions at Fort Mifflin, there is no record for specific conductance from March to early April. The monitor at Ship John Shoal Lighthouse was not operated in December 1985 and was permanently shut-down on July 14, 1986. At Ship John Shoal Lighthouse and Fort Mifflin the water was monitored for two parameters: temperature and specific conductance. At the remaining sites, the water was monitored for four parameters: temperature, specific conductance, dissolved oxygen, and pH.

Additional data were obtained twice a month at fourteen sites between Fieldsboro, N.J., and Marcus Hook, Pa. (fig. 5). At each of these sites, samples of water were collected at the center of the river channel. These samples were analyzed for temperature, chloride, alkalinity, biochemical oxygen demand, specific conductance, dissolved oxygen, and pH.

Data obtained from the continuous monitoring sites were processed by com­ puter and stored for future reference by the U.S. Geological Survey. They were also distributed regularly to cooperators and published annually by the U.S. Geological Survey in "Water Resources Data for Pennsylvania, Volume 1, Delaware River Basin". Data from the twice a month sites were collected by the state of Delaware under the auspices of the Delaware River Basin Commission for the City of Philadelphia Water Department. These data can be obtained from the City of Philadelphia Water Department.

The above-described programs were carried out in cooperation with the City of Philadelphia Water Department, Delaware River Basin Commission, Delaware River Master, and other agencies of federal, state, and county governments.

ESTUARINE WATER-QUALITY DATA DURING 1986

The following is a summary and discussion of the data that were collected during the 1986 report year. Additional information can be found in the tables at the end of this section.

73

Streamflow

Streamflow is a vital factor which influences the water quality of the estuary. Increased Streamflow usually results in better water quality by limiting salt-water intrusion and diluting the concentration of dissolved minerals, both of which contribute to a lower specific conductance and chloride level. Increased flow also aids in maintaining lower water tem­ perature during warm weather and supporting higher dissolved-oxygen levels.

Based on Streamflow records for the Delaware River at Trenton, mean monthly Streamflow was lowest for the year during September (3,639 cfs) and highest for the year during March (29,650 cfs) (see table 8). The mean monthly Streamflow was above the respective median for the period of record December, February throxjgh April, June, and November and below the median for the rest of the year.

Temperature

The significance of water temperature in regard to water quality in the estuary lies in its profound influence on various physical, chemical, and biological properties of the water. In general, increases in water temperature have deleterious effects on water quality by lowering the saturation level of dissolved oxygen and increasing biological activities.

The primary factors involved in controlling water temperature in the estuary are climatic; however, various uses of the water by man can also have significant effects.

Based on records from Benjamin Franklin Bridge (Pier 11 North) Philadelphia, Pa., mean monthly temperatures for the period March to November 1986 were below normal in July, August, September, and November and equaled or exceeded the norm for the remainder of the reporting period. The norm is based on historical temperature records from 1962 to 1985 (see fig. 6).

Specific Conductance and Chloride

Specific conductance is the ability of a solution to conduct electri­ city. Basically, it can be used to measure the amount of ionized material in solution and relates approximately to dissolved-sol ids content.

Specific conductance values in bodies of water usually reflect the geochemistry of the drainage basin; however, pollution and the intrusion of oceanic salts can also have considerable effects. Increasing streamflows reduce the concentration of dissolved solids, thus lowering specific conductance and chloride levels. Conversely, decreasing flows have the opposite effects.

In the Delaware Estuary, the intrusion of oceanic salts is important to those who must use the estuary as a water supply. for this reason, chloride concentration is of great interest. Water with chloride con­ centrations in excess of 250 mg/L (milligrams per liter) is usually con­ sidered undesirable for domestic use and water with concentrations in excess of 50 mg/L is unsatisfactory for some industrial uses.

74

Ui

o

28

26 24

22

20 18

bJ bJ a: O

16

bJ a bj <c

12ui

a. b

j 10

\

\

1962

^85

1986

\ - -

/

XX"

N N

\ \

\

DEC

JA

N

FEB

MA

R

APR

M

AY

JUN

E

JULY

A

UG

SE

PT

OC

T N

OV

Figure 6

. - Me

an mon

thly

te

mper

atur

es o

f De

lawa

re R

iver

at

Benj

amin

Fra

nkli

n Br

idge

, Philadelphia ,

Penn

sylv

ania

.

As sea water has a chloride concentration of approximately 19,000 mg/L, the location of a body of water in relation to the sea can influence chloride levels in that body of water. For this reason, chloride con­ centrations in the Delaware Estuary generally increase with distance downstream toward the Delaware Bay and Atlantic Ocean.

Chloride concentration was not measured directly at Fort Mifflin, Pa., and Reedy Island Jetty, Del., but a correlation between specific con­ ductance and chloride concentration has been developed based on analyses of water samples taken in the estuary. Chloride concentrations at those sites presented in tables 17 and 19 were derived from that relationship. The relationship is less reliable when chloride concentrations are lower than 30 mg/L because other ionized materials may be present in amounts large enough to affect the conductance-chloride relationship. Therefore, chloride concentrations derived from specific conductance are not given when the relationship indicates chloride concentrations of less than 30 mg/L. Chloride concentrations at Chester, Pa., (table 18) were furnished by Scott Paper Company.

At Fort Mifflin, the maximum daily chloride concentration equaled or exceeded 50 mg/L 21 percent of the time (see table 17). The maximum was 77 mg/L on July 27 and October 5. At Chester, the minimum chloride con­ centration equaled or exceeded 50 mg/L on July 19, 20, 23, and 25 through 31, August 1 through 3, September 4 through November 14, and November 21. A minimum chloride concentration exceeding 250 mg/L occurred on September 26 with a value of 280 mg/L (see table 18). The maximum daily chloride concen­ tration in the estuary at Chester was greater than 50 mg/L 36 percent of the time and greater than 250 mg/L 15 percent of the time. The maximum at Chester was 528 mg/L on November 5. Minimum chloride concentrations in excess of 30 mg/L and 250 mg/L were recorded 99 and 94 percent of the time, respectively, at Reedy Island Jetty. During the period December through May, maximum chloride concentrations commonly ranged from 1,000 to 4,000 mg/L, whereas the common maximum chloride range for June through November was 3,000 to 8,000 mg/L (see table 19). The maximum at this site was 8,425 mg/L on November 4.

Dissolved Oxygen

Dissolved oxygen is necessary in water for the respiration of aquatic organisms. It also plays a significant role in chemical reactions in aquatic environments. The major sources of dissolved oxygen in water are diffusion from the air and photosynthesis in aquatic plants. Dissolved- oxygen levels are limited by temperature, salinity, and the partial pressure of atmospheric oxygen.

Dissolved-oxygen levels in the estuary tend to be highest near Trenton and to decrease with distance downstream to a point near or somewhat downstream from the Benjamin Franklin Bridge where minimum values are usually reached.

76

Tabl

e 17

. -

Chlo

ride

con

cent

rati

ons,

Delaware Riv

er a

t Fort M

ifflin,

Pa.

Dail

y ma

ximu

m and mi

nimu

m ch

lori

de c

once

ntra

tion

s in m

illi

gram

s per

lite

rDecember 1

, 19

85 to Nov

embe

r 30,

1986

A

dash

(-)

indicates missing

data

; *

indicates

less than 3

0 mg

/L.

Day

Dece

mber

Ja

nuar

yMax

| Mi

n Max

Min

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Febr

uary

March

April

Max

Min

Max

Min

Max

| Min

_ _ _ * *

30

*

37

*30

*

33

*42

*38

*

33

*35

*

* *

30

**

*

48

*43

**

**

**

*

* *

* *

* *

* *

* *

* *

* *

* *

* *

* *

May

Max

| Min

* *

* *

* *

* *

* *

* *

* *

37

*31

*30

*

31

*35

*30

*33

*33

*

31

*31

*

33

*35

*38

*

40

*43

*47

*38

*38

*

37

*33

*37

*

35

*33

*31

*

June

Max

I Min

30

**

**

**

**

*

* *

* *

* *

30

*30

*

37

*37

*35

*37

*33

*

30

**

**

**

**

*

30

**

**

**

**

*

* *

* *

* *

* *

33

*

July

Max

Min

* *

* *

31

*37

*38

*

33

*37

*

33

*33

*38

*

33

*40

*

38

*38

*42

*

40

*37

*35

*

47

*47

*

45

*40

*40

*37

*

37

*

50

*77

31

60

3537

31

35

3035

*

August

Max

I Min

37

3040

30

43

*33

*35

*

35

*35

*33

*35

*31

*

38

*43

*

38

*35

*33

*

33

*33

*47

*

45

*43

*

37

*47

*

40

*43

*

35

*

30

*33

*35

*31

*30

*31

*

Sept

embe

rMax * * 30 31 31 33 31 35 31 33 33 40 42 38 40 45 43 53 52 52 59 60 60 55 55 55 55 55 57 _

Min * * * * * * * * * * 30 30 31 31 31 33 35 35 37 37 43 42 43 43 43 43 43 45 48

Octo

ber

Max

I Min

_ _ 53

4574

4777

47

60

4755

4557

4355

45

60

43

55

4359

4752

4250

4350

40

50

4253

42

52

4253

4052

40

53

3852

42

50

4248

42

50

40

52

4252

4250

4252

4048

38

52

38

Nove

mber

Max

| Mi

n53

4250

4252

4060

42

59

43

60

4555

4352

43_ - _

__ _

_35

*

33

*

31

*33

*

33

*45

30

42

*

38

**

**

*30

*33

*

30

*30

*43

*

* *

* *

Table

18.

- Ch

lori

de concentrations,

Dela

ware

River at

Ch

este

r, PaJ/

Dail

y maximum

and mi

nimu

m ch

lori

de c

once

ntra

tion

s in m

illi

gram

s pe

r li

ter

December 1

, 1985 to

Nov

embe

r 30

, 19

86.

Coll

ecti

on a

nd analysis by

Scott Paper C

ompany.

A dash

_(-)

in

dica

tes mi

ssin

g data;

* indicates

less th

an 30 mg

/L.

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

December

Max 30 30 * * * * * * * * * 30 * * * * * * * 32 32 * 32 - 32 30 30 35 35 35 35

Min * * * * * * * * * * * * * * * * * * * * * * * - * * * * 30 30 30

January

Max 35 35 32 35 35 35 35 35 38 35 35 38 35 35 38 35 35 35 35 37 37 38 41 40 40 36 35 30 32 33 34

Min 30 30 30 30 30 30 30 30 30 35 32 33 33 30 33 33 34 35 35 35 35 35 38 37 35 30 30 30 * 30 30

Febr

uary

Max 35 35 35 35 37 38 38 40 46 45 48 48 48 47 47 48 52 53 53 50 50 45 45 40 39 38 40 36

Min 30 30 32 30 35 35 35 36 40 42 44 45 45 42 45 44 46 48 48 49 42 44 38 36 36 35 35 35

March

Max 35 35 35 35 35 36 36 34 35 35 36 35 35 36 36 35 35 * * * * * * * * * * * * * *

Min 32 32 32 32 34 34 33 32 32 32 32 34 34 33 34 31 * * * * * * * * * * * * * * *

April

Max

| Mi

n*

*30

*30

*30

*30

*

30

*30

*

32

**

*30

*

34

3032

3030

30

30

*30

*

30

*30

*30

30

30

*30

*

30

*30

*32

*30

**

*

30

**

*30

*30

*30

*

i Ma

yMax * 30 30 * 30 32 30 30 30 * * 30 30 30 30 31 31 32 32 30 34 34 38 38 36 36 36 36 36 36 36

Min * * * * * * * * * * * * * * 30 30 30 30 30 30 30 33 33 34 35 34 35 35 35 34 34

June

Max 36 36 36 36 35 36 36 37 36 36 36 36 30 30 * * * * * * * 30 30 30 30 30 33 33 34 33

Min 34 34 34 35 33 33 35 35 30 32 35 33 * * * * * * * * * * * 30 30 30 32 33 32 31

July

Max

| Min

32

3235

31

35

3234

34

34

34

34

3435

34

37

3637

3639

37

46

4057

42

56

4454

40

55

41

55

4048

4066

4580

50

87

50

105

45105

4596

5085

48

105

60

110

6085

78

97

5510

0 59

100

5295

54

August

Max

| Min

85

5578

5262

5053

4552

46

50

4550

4047

4048

4145

38

50

3750

4050

40

46

4055

40

56

3860

40

120

4580

46

108

45

78

4570

45

68

4560

43

52

38

56

3856

3952

4152

40

60

4060

45

September

Max 85 95 90 130

210

200

205

195

190

320

310

290

345

300

450

400

420

450

390

510

440

480

434

320

370

350 _ _ 299

331

Min 44 45 49 50 63 60 64 70 80 95 92 95 88 120

120

100

130

170

200

180

200

200

210

150

210

280 _ _ 205

140

October

Max

338

341

380

380

273

240

238

335

325

390

389

460

375

292

300

350

380

425

319

330

310

400

368

329

345

406

440

290

350

290

364

Min

137

138

152

173

138

130

117

133

118

104

129

146

138

121

106

106

135

137

121

142

145

144

154

136

140

138

141

150

133

125

136

Nove

mber

Max

| Mi

n452

141

350

185

188

140

190

165

528

184

360

194

355

167

355

155

300

136

202

92

182

7416

0 66

110

50110

5366

48

64

4470

4570

4065

47

60

46

35

5035

4237

*40

*

38

*

35

**

*32

*32

*35

*

Tabl

e 19

. - Chloride c

once

ntra

tion

s, De

lawa

re R

iver a

t Reedy

Island J

etty,

Del.

Da

ily ma

ximu

m an

d mi

nimu

m chloride c

once

ntra

tion

s in mil

ligr

ams

per

lite

rDecember 1

, 19

85 to Nov

embe

r 30,

1986

A das

h (-)

indicates mi

ssin

g da

ta;

* in

dica

tes

less than 30 mg/L.

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Dece

mber

Max

2984

2704 569

1934

2438

3204

4200

5031

4400

4375

4200

4375

4174

3106

3036

2406

2098

1440

2672

3022

3700

4200

4145

5062

4650

3900

4174

2854

3850

3653

3670

Min

389

603

171

310

366

456

816

1008 895

974

997

1118

1160 850

907

816

648

512

445

434

828

1174 715

1146

1524

1272

1008 704

794

963

952

Janu

ary

Max

2518

3190

3364

3092

3670

3218 - - -

2532

4000

4174

3900

3875

3925

3875

3825

3825

4200

5093

3510

4375

4000

4200

5093

4145

3364

1202 - - -

Min

760

783

850

895

895

749 - - - 119

636

1008

1230

1042

1314

1132

1118

1132

1510

1776

1230

1314 974

1356

1482 940

726

816 - - -

Febr

uary

Max _

2098

2336

2700

2994

2560

2938

3036

2280

1972

2000

2322

1874

3148

2616

2994

3619

4174

4375

4700

4116

3687

4145

3670

2434

2728

2784

2420

Min _ 321

274

332

400

377

422

467

422

389

445

467

400

366

563

603

805

1160

1342

1370

1118 738

749

580

445

411

400

389

Marc

hMax

2182

2196

3022

3162

3291

3800 - - -

3218

3619

2854

2448

3190

2826 704

125 45 377

546

1972

2700

3134

2392

2042

1594

1566

1160

1790 929

895

Min

366

366

411

479

535

580 - - - 816

693

614

636

591

400 52 31 * * * * 332

524

321

285

274

239

182

171

159

137

Apri

lMax 963

1030

1030

1188

1230

2112

1860

1874

2070

2028

2588

2910

3106

2966

2896

3687

2994

3008

3975

3700

2952

2532

2252

2840

3291

3653

2868

2574

2434

1440

Min

125

125

137

148

159

217

262

274

389

355

366

512

524

591

670

805

636

715

377

805

693

400

296

310

355

411

422

434

389

332

May

Max

1860

1692

2140

3619

3602

3700

3900

3975

4116

5124

4560

4325

5217 - - _ - -

3950

3700 _ - - - - _ - - - - -

Min

344

274

228

344

603

659

816

1008

1426

1314

1412

1300

1734 - - _ - -

1524

1440 _ - - - - _ - - - - -

June

Max - - - - 4350

4520

4300

4520

4200

3925

4200

3636

4440

3975

3687

3700

3510

4145

4520

4200

4700

5310

5217

5062

3975

4200

4560

4116

4480

5000

Min _ - - -

1566

1440

1496

1566

1300

1244

1160

1019

1118

1132 974

985

726

726

895

1019

1174

1328

1608

1552

1426

1524

1622

1566

1636

2014

July

Max

5155

5400

5900

5963

5972

5600

6250 - - - _ - - - - _ - - - - _ - - - - _ -

5972

6250

6834

6902

Min

2056

2168

2140

2210

2322

2042

2098 - - - _ - - - - _ - - - - _ - - - - _ -

2966

3092

3218

3585

August

Max

| Min

7499

3975

7565

36

8771 33

3437

6775

2966

7266

2826

6987

31 90

6500

30

2262

75

2882

6275

2798

5990

2700

5825

27

5659

63

2560

- - - _ _

- - -59

63

3700

6936

3585

- - -5936

3148

6250

2742

5945

29

9468

17

2700

7400

3700

7600

3670

7945

38

75

September

Max

| Min

8400

3875

8308

3875

7700

39

2581

76

4200

8400

4375

7887

4174

7266

46

5078

58

4440

7750

4325

7750

45

20

6600

2980

- - - - _ _

-59

63

3975

6775

39

006834

3975

6450

4029

6851

4087

6375

4058

6350

36

706775

3687

6851

3850

7000

3825

6750

39

2569

02

4029

6775

35

85

October

Max

6300

6817

6885

6817

5981

6350

6375

68B5

5981

6936

7466

7466

6400

6600

6250

6600

6936

6936

6953

7133

7466

6953

6970

6834

6834

6970

7650

7945

7916

7650

7800

Min

3291

3510

3875

3850

3700

3585

3510

3636

3510

3218

3950

3975

4058

3875

3700

3875

3975

3975

4116

4200

4116

4087

4174

3975

4350

4400

4116

4700

4375

4400

4440

Nove

mber

Max

8044

7916

8220

8425

7945

8308

8044

7858

6851

6851

6902

6902

5990

6000

5550

5945

6400

6817

6325

7600

6919

4174

5031

5600

5093

4750

4029

4116

3900

3364

Min

4325

4560

4700

5124

5155

5155

5124

4520

4520

4325

4174

3850

3619

3364

3036

3050

3204

3585

3291

3585

2518

1874

2168

1972

1398

1468

1146 853

726

636

During the past year, mean dissolved-oxygen concentration at the Benjamin Franklin Bridge was below 5 mg/L (Delaware River Basin Commission, Ad Hoc Task Force, March 1979) on May 23, June 10 through 13, July 2 through August 6, and August 12 through November 11 (see table 20). Ihe minimum daily mean was 1.7 on July 23 and 24. At Chester, the mean dissolved-oxygen concentra­ tion was below 5 mg/L from May 18 to September 12 (see table 21) . The lowest daily mean was 1.2 mg/L on July 29. The minimum hourly value was 0.7 mg/L also on July 29. At Reedy Island Jetty, the minimum hourly value was 3.9 mg/L on August 5.

Figure 7 shows the frequency of hourly dissolved-oxygen concentration at Benjamin Franklin Bridge (Pier 11 North) and Chester during the critical summer period, July through September 1986. Dissolved-oxygen concentration was at or below 4 mg/L 77 percent of the time at the Benjamin Franklin Bridge in 1986. Data for 1985 indicate that it was at or below 4 mg/L 92 percent of the time. Dissolved-oxygen data for Chester show a bimodal distribution. Concentrations at or below 4 mg/L occurred 87 percent of the time in 1986 as compared to 55 percent of the time in 1985. Since dissolved-oxygen con­ centrations are higher upstream at Benjamin Franklin Bridge and dissolved- oxygen concentratrions at Chester depict a bimodal distribution, the Chester data suggests that a local source of contamination was present during most, but not all, of the summer. Ibis type of situation, bimodal dissolved-oxygen data distribution in conjunction with a lower range of dissolved-oxygen values, also occurred at Chester in the summer of 1982. At that time, it also was suggested that the data indicated a local contamination event.

To determine how dissolved-oxygen concentrations have varied historically, data from two stations on Delaware River, Benjamin Franklin Bridge and Chester, Pennsylvania were analyzed for the period 1962 to 1986. Dissolved- oxygen concentrations were monitored on a daily basis beginning in November 1960 for Benjamin Franklin Bridge and in December 1961 for Chester. Ihese data have been published annually in the U.S.G.S. Water Resources Data for Pennsylvania.

Figures 8 and 9 show that mean monthly dissolved-oxygen concentrations for both stations on Delaware River are lower during the warmer summer months and higher during the colder winter months. Also, mean monthly dissolved-oxygen concentrations have increased with time at both stations except for the months of October and November 1982-86 at Benjamin Franklin Bridge. Since these values are for a shorter (5 years) period, they may show an increase when averaged over a ten year period.

At Benjamin Franklin Bridge, the period of time mean monthly dissolved- oxygen concentrations were below 4 mg/L decreased from seven months during 1962-71 to five months during 1982-86. Hie minimum monthly mean increased from 0.3 mg/L for September 1962-71 to 2.2 mg/L for August and September 1982-86 (fig. 8). At Chester, the period of time mean monthly dissolved- oxygen concentrations were below 4 mg/L decreased from seven months during 1962-71 to three months during 1982-86. Hie minimum monthly mean increased from 0.8 mg/L for July 1962-71 to 2.9 mg/L for August 1982-86 (fig. 9). The improvement in dissolved-oxygen concentrations is more marked at Chester than it is at Benjamin Franklin Bridge. Ibis can be attributed to full compliance for all effluent water quality parameters at the Philadelphia South­ west water pollution control plant on January 1, 1984. The Philadelphia North­ east and Southeast water pollution control plants were in full compliance for for all effluent water quality parameters in the fall of 1986 (Mr. Wn. Wankoff, City of Philadelphia Water Department, personal communication, March 27, 1986). This should contribute to continuing improvements in dissolved-oxygen concentrations.

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December 1 , 1985 to November 30, 1986 A dash (-) indicates missing data.

Hydrogen-Ion Concentration (pH)

Hydrogen-ion concentration (pH) is fundamentally a measure of acidity or alkalinity. Values of pH below 7 indicate acidity, whereas values above 7 indicate alkalinity. In natural waters, pH generally ranges from 6.0 to 8.5. The main factors controlling the pH of a body of water are usually the geoche­ mistry of the drainage basin and external influences such as pollution. Photosynthetic activity can also have a considerable influence on pH values. Increased photosynthetic activity (algal bloom) produces higher pH values. All pH values at Benjamin Franklin Bridge, Chester, and Reedy Island Jetty were in a range of 6.1 to 8.0. The pH range for each station is: Reedy Island Jetty, 7.1 to 8.0; Chester, 6.3 to 7.6; Benjamin Franklin Bridge, 6.1 to 7.2. The pH in the estuary tends to be lowest near Trenton, N.J., and to increase downstream.

86# U.S. GOVERNMENT PRINTING OFFICE:1987-707-648