LOWER NECHES VALLEY AUTHORITY

MUNICIPAL • INDUSTRIAL • AGRICULTURAL WATER

Created by the State Legislature in 1933 as a Conservation and Reclamation DistrictJurisdictional Area

Tyler, Hardin, Jefferson and portions of Liberty and Chambers Counties

Services Provided Water Supply from Neches & Trinity Rivers Wastewater Treatment for industry Potable Water to Bolivar Peninsula Environmental Water Quality Testing

Partnership with USACE Sam Rayburn Reservoir Lake B.A. Steinhagen Neches River Saltwater Barrier

Our neighborhood

Population of 250,000

Irrigation of 27,000 acres of rice, emerging biofuels

Refining and Petro-chemical Industries 11% of Nation’s refined petroleum products Delivers 400,000 BCD of waterborne crude Delivers 470,000 barrels per day of refined products Industry Drives the Economy of the Area:

Total expenditures exceed $35 billion per year

Gross product of $8.8 billion annually

Employs over 88,000 people

4th largest Port complex in the Nation

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Village Creek near Kountze, TXDrainage Area 860 square miles or 8.8% of the Neches River Basin

Gage Record Established June 1, 1924

Historical Minimum Flow 2011 Observed Flow

Historic Low Flow16 cfs - October 1-2, 1957

New Record Low Flow10 cfs – October 24, 2011

Sam Rayburn Reservoir

Reservoir Pool Total Storage Acre-feet

Flood Control 3,997,600

Conservation 2,898,500

Inactive Pool 1,452,000

At Elevation 150.79 feet on 11/17/11

Total Storage 1,584,800 acre-feet

Conservation Storage

132,800 acre-feet

9% of capacity

Inactive Pool

Elev. 173

Elev. 164.4

Elev. 149

Elev. 105

Conservation Pool for Water Supply and Hydroelectric Power Generation

Original DCP in response to 1996 drought

Untested in Severe Drought 30% reduction then no storage

Revised DCP Triggers at 1year, 6 months and 3 months Surcharge that increase as drought increases Trigger to curtail interruptible supply

Drought Contingency Plan

Conservation Efforts

Saltwater Barrier operated in a salinity control mode since Oct 2010

Coordinated Reservoir Releases with USACE

Required customers schedule water delivery

Municipal efforts – 20% reduction by replacing leaking distribution system pipes

Industrial customers actively engaged

All irrigation is metered – 27% reduction

Alternate Water Supply

Extension of active pool at Rayburn Requires extension of erosion protection and

modification to the hydropower plant

Request to Sabine River Authority for an additional supply from Toledo Bend SRA Board to consider later this month Requires IBT permit Goal to complete within 3 years

Summary

Two years of drought – call to action

Increased conservation efforts

Increased communication with stakeholders

Modification to existing projects/operations

Identified means to diversify water supply

Provide for the present and long term freshwater needs of municipal, agricultural and industrial customers,

Protect water quality in the Neches River and coastal basin,

Insure affordability of the water supply,

Enhance the economic

development in the Authority’s

jurisdiction.LNVA

Water for Today

Water for Tomorrow

www.lnva.org