Book Two TRCI Book 3... · 2020. 8. 4. · Enquiries should be directed to: NRM South ABN 867 040...

02Book TwoHydrology User’s GuideTasmanian River Condition Index

Contents Contents ...................................................................................................................... 1

Introduction ................................................................................................................. 1

The manuals in the 2009 series .................................................................................... 1

User’s Manual .............................................................................................................. 2

The Hydrology sub-index .............................................................................................. 2

Preparation .................................................................................................................. 3

Primary time series files ................................................................................................ 3

Site selection ................................................................................................................. 4

Software and files required ............................................................................................ 4

The Fortran programs ................................................................................................... 5

Installing the suite of programs ...................................................................................... 5

Setting up the data structure ......................................................................................... 5

Calculating the Indices ............................................................................................... 7

Defining data and file locations ...................................................................................... 7

Run the Fortran programmes ........................................................................................ 7

Index Calculation......................................................................................................... 12

Limitations ................................................................................................................. 16

Cessation of flow ......................................................................................................... 16

Insufficient bankfull events .......................................................................................... 16

Calculating Hydrology Score for a Node ................................................................. 17

Calculating Hydrology Score for a Reporting Unit ................................................. 17

Determining the Length of Stream Represented by the Data from a Point................... 17

Calculating the Weighted Median ................................................................................ 19

References ................................................................................................................. 21

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Enquiries should be directed to:

NRM South ABN 867 040 886 98

313 Macquarie St PO Box 425 South Hobart TAS 7004

Phone: 03 6221 6111 Fax: 03 6221 6166

Web: www.nrmsouth.org.au Email: [email protected]

Tasmanian River Condition Index Hydrology User’s Manual

1

Introduction The Tasmanian River Condition Index (TRCI) is a framework for assessing the condition of Tasmanian river systems. It evaluates the condition of key aspects of waterways including Aquatic Life, Hydrology, Physical Form and the Streamside Zone (known as sub-indices in the TRCI).

The TRCI is a practical tool to establish condition and monitor changes from this baseline into the future. It is a referential approach whereby the current condition of sites is compared with pre-European reference condition.

The manuals in the 2009 series This document is one of several volumes that describes the application of the Tasmanian River Condition Index (TRCI).

• The Tasmanian River Condition Index Reference Manual describes the development of the TRCI; application; sub-index methods; desktop analysis and scoring. It is used in conjunction with the Field and User’s Manuals to complete TRCI assessments and generate condition scores (NRM South 2009).

• The Tasmanian River Condition Index User’s and Field Manuals detail the procedures for the collection of field data for the Streamside Zone, Physical Form and Aquatic Life sub indices; and describe the desktop assessment of the Hydrology sub-index:

• The Tasmanian River Condition Index Hydrology User’s Manual (this document);

• The Tasmanian River Condition Index Aquatic Life Field Manual (NRM South 2009a);

• The Tasmanian River Condition Index Physical Form Field Manual (NRM South 2009b);

• The Tasmanian River Condition Index Streamside Zone Field Manual (NRM South 2009c).

Several data analysis tools and programs are also used for the TRCI and are described in the Tasmanian River Condition Index Reference Manual (NRM South 2009). All TRCI products are available from NRM South.


2

User’s Manual The Hydrology sub-index is completed at the desktop using modelled data. Field work is not required and the indices can be calculated at any time of the year. This report describes the procedures used to calculate the component indices of the TRCI Hydrology sub-index. It details the use of specifically created Fortran and Visual Basic programs that have been developed to automate aspects of the calculations. It should be noted that the calculations are not fully automated, and have been designed in modular format to allow some quality control steps to be implemented and provide flexibility for the end user to make their own modifications.

The Hydrology sub-index The objective of the hydrology sub-index is to provide an assessment of the hydrological condition of Tasmanian Rivers that can be incorporated into the TRCI. The assessment of ‘condition’ is based on a departure from a reference state, where reference is defined as being pre-European conditions and refers to what the flow regime would have been like without extraction, dams, or other water resource developments.

The Hydrology sub-index comprises 12 component indices calculated from modelled time series data. The 12 indices provide insight into the changes to different aspects of the flow regime that have occurred as a result of water resource development. The 12 component indices are:

1. Mean Annual Flow Index 2. Flow Duration index 3. Variation Index 4. Seasonal Amplitude Index 5. Seasonal Period Index 6. High Flow Index 7. High Flow Spells Index 8. Low Flow Index 9. Low Flow Spells Index 10. Proportion of Zero Flows Index 11. Overbank Flows Index 12. Overbank Spells Index

The background to the development of the 12 components of the hydrology sub-index are outlined in the Tasmanian River Condition Index Recommended Approach (Earth Tech 2007a), the Tasmanian River Condition Index Draft Method (Earth Tech 2007b) and the pilot testing results from 2007 and 2008 (Dyer 2008; Dyer 2009).


3

Preparation

Primary time series files The calculation of the component Hydrology indices uses modelled time series data at a daily timestep. These data are modelled for current water resource development conditions (typically specified as a year) and natural conditions (pre-development conditions). These data are generally obtained from the Department of Primary Industries and Water Hydrology Branch for standard sub-catchment nodes within a catchment. Please contact the DPIW Hydrology branch to discuss your data needs before attempting to commence assessments.

The format of the time series files provided from the Department must be supplied as space delimited files in a columnar format and contain the same six items of information as shown in Table 1.

Table 1. Example raw modelled data set illustrating the expected format of the data.

1/01/1950 @ 0:00:00 3514.809 Q1 T2 2/01/1950 @ 0:00:00 360.1052 Q1 T2 3/01/1950 @ 0:00:00 1656.998 Q1 T2 4/01/1950 @ 0:00:00 1091.453 Q1 T2 5/01/1950 @ 0:00:00 228.7913 Q1 T2 6/01/1950 @ 0:00:00 217.5504 Q1 T2 7/01/1950 @ 0:00:00 188.1656 Q1 T2 8/01/1950 @ 0:00:00 154.0766 Q1 T2 9/01/1950 @ 0:00:00 1045.128 Q1 T2 10/01/1950 @ 0:00:00 1406.991 Q1 T2 11/01/1950 @ 0:00:00 556.4894 Q1 T2 12/01/1950 @ 0:00:00 183.7107 Q1 T2 13/01/1950 @ 0:00:00 157.9912 Q1 T2 14/01/1950 @ 0:00:00 154.8137 Q1 T2 15/01/1950 @ 0:00:00 553.6367 Q1 T2 16/01/1950 @ 0:00:00 237.6246 Q1 T2 17/01/1950 @ 0:00:00 116.8139 Q1 T2 18/01/1950 @ 0:00:00 100.46 Q1 T2

The spacing of the 6 items within the time series files is not important (except that it must in total be no more than 100 characters), but it is important that all 6 items do appear in each file for analysis.


4

L ength of record

It is recommended that a minimum of 30 years of data be used to calculate the indices. Typically the TRCI pilot testing used approximately 50 years of data and obtained satisfactory results.

At present 100 years of data is the maximum limit for the calculation of indices. If a longer time period is required, modifications will have to be made to the Fortran programming.

Site selection Sites should be selected in accordance with the sampling strategy determined for the project (see Chapter 2 of the TRCI Reference Manual, NRM South 2009). Typically the sites will be at standard modelling nodes and, as a rule of thumb, should represent at least 5% of the stream length (refer to Section 0)

Software and files required The software required to calculate the Hydrology sub-indices is:

• Microsoft Excel

• Windows Explorer

The files required are:

• TAS.BAT

• 12 Fortran programs (CHOOSE.exe, CONVERT.exe, TAS.exe, TAS1.exe, TAS2.exe, TAS2B.exe, Tas3.exe, Tas4.exe, Tas5.exe, Tas6.exe, TAS7.exe, TAS8.exe)

• 9 LST files (Catch0, Catch1, Catch2, Catch3, Catch4, Catch5, Catch6, Catch7, Catch8)

• An Excel file called TasRCI MASTER.xls

Contact NRM South for a copy of these files.


5

The Fortran programs A suite of programs are used to process the raw time series data and obtain component index scores. These are:

1. A series of Fortran programs used to pre-process the raw time series data and obtain inputs that will enable the calculation of the component index scores (provided by Enviromon – refer separate documentation:1

on the detail of these programs). These are included in the directory TASRCI held by NRM South.

2. An excel spreadsheet containing a series of macros written in visual basic used to take the outputs from the Fortran programs and calculate index scores. This is called TasRCI MASTER.xls and is also included in the directory TASRCI held by NRM South.

Installing the suite of programs Use Microsoft explorer to copy the directories TASRCI and all its contents to your “C” root directory or other directory of your choice.

There are limits to the length of file names used, including directory and sub-directory paths that can be used. Where sub-directory paths are used their names should be no longer than 8 letters. It is therefore not recommended that the programs be operated from network directories.

Setting up the data structure The model data from each sub-catchment must be in files with the following naming convention:

Modelled current time series data: SC#_CF

Modelled natural time series data: SC#_NF

Where SC# refers to the sub-catchment node for which the data have been generated.

Copy the modelled time series data (in the format described above) into a directory within the TASRCI directory as per Figure 1.

1 Tas_RCI program suite user manual 2008 in Appendix 1


6

Figure 1. Example data structure for the modelled time series data. This example shows the data structure for the Huon catchment. Huon_CF contains the modelled current flows and Huon_NF contains the modelled natural flows.


7

Calculating the Indices

Defining data and file locations Prior to running the programs and calculating the component index results the data and file locations must be specified within the master Spreadsheet (TasRCI MASTER.xls) and the file name list also needs to be prepared.

1. Open the master spreadsheet TasRCI MASTER.xls 2. Open the Visual Basic Editor (ALT F11) 3. Open Module 1 4. Edit the directory where the master spreadsheet sits and if the name of the

master spreadsheet if it has been changed. 5. Save 6. Close the Visual Basic Editor 7. Go to the ‘Inputs’ tab 8. Fill in the green cells 9. Review the index calculation parameters in the yellow cells and adjust as

necessary. Note that adjusting these parameters may result in the spreadsheet or Fortran programs becoming unstable. These should only be adjusted by a confident programmer.

10. Save the master Spreadsheet 11. Click on the ‘Create Text Files Now’ button. This creates the following files:

a. Catch0.lst b. Catch1.lst c. Catch2.lst d. Catch2b.lst e. Catch3.lst f. Catch4.lst g. Catch5.lst h. Catch6.lst i. Catch7.lst j. Catch8.lst

Run the Fortran programmes The suite of Fortran programmes are used to analyse and pre-process flow time series data for subsequent use in the master spreadsheet to calculate the 12 component Hydrology indices. A description of the programmes is provided in the User Manual for the programs included in Appendix A. Once the data and file locations have been defined and the file name list prepared (refer Section 0) the Fortran Programmes can be run through the batch file “TAS.BAT”.

To run the batch file, double click on the file name “TAS.BAT” in windows explorer. It will then present the screen below, asking your choice of programme (Figure 2):


8

Figure 2. Sample screen showing the batch file menu from TAS.BAT. The sample screen shows the user selecting item “0” to run CONVERT.EXE.

The programmes can be run in sequential order as follows.

C ONVE R T .E XE

Select 0 from the batch file menu. The following prompt should appear:

Confirm with a Y for yes and an N for no, that these inputs are ready?

The response is to enter Y (note that this is case sensitive).

Then the following prompt will appear:

ENTER NAME OF INPUT FILE LIST FILE:-

The response is to enter the list file name, including the relevant sub-directory. This will be:

Catch0.LST

The programme should then run and create combined daily flow files.

T as 1.E XE








9

Catch1.LST

The programme should then run and create monthly time series flow files.

T as 2.E XE







Catch2.LST

The programme should then run and create daily flow duration tabulation.

T as 2b.E XE







Catch2b.LST

The programme should then run and define the flowrates corresponding to the four standard %iles defined in the master spreadsheet (inputs tab), in each year.

T as 3.E XE







10


Catch3.LST

The programme should then run and create high spell persistence data.

T as 4.E XE







Catch4.LST

The programme should then run and create low spell persistence data.

T as 5.E XE







Catch5.LST

The programme should then run and create comparative %iles for each reference flowrate.

T as 6.E XE





11




Catch6.LST

The programme should then run and extract the maxima and minima for each month.

T as 7.E XE







Catch7.LST

The programme should then run and create flow statistics and extract the partial series of independent events.

T as 8.E XE







Catch8.LST

The programme should then run and identify the bankfull flow rate as well as ‘below bankfull’ spell periods.


12

Index Calculation Now that the data have been pre-processed the component indices can be calculated for each node within the catchment of interest.

1. Open the master spreadsheet (TasRCI MASTER).xls 2. Go to the “Index Calculation Summary” tab 3. Enter the sub-catchment of interest in the yellow cell (ensure that you tab or

enter out of the cell 4. Press the “Load SC files now”

The screen will flash and move between tabs within the master spreadsheet. This automates the processes outlined in Table 2.


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Table 2. Steps required to calculate the Hydrology Indices from the output files of the suite of Fortran programmes. Extract from the README tab of the master spreadsheet.

1a. Monthly Natural

Programme TAS1.EXE is run to produce the text file with both natural and current monthly volume time series data, "SC1_LEV.1". This text file is then opened in XL (space delimited), and "special paste" to the worksheet- but just the upper half for the "natural" flows

1b. Monthly Current

Programme TAS1.EXE is run to produce the text file with both natural and current monthly volume time series data, "SC1_LEV.1". This text file is then opened in XL (space delimited), and "special paste" to the worksheet- but just the lower half for the "current" flows

2. Daily flow duration tables

The same text file input as used in the above step (ie SC1.OUT) is again used here- for input to programme "TAS2.EXE". This programme outputs a text file with the flow duration exceedance tabulations analysed both for the unimpacted as well as the current conditions time series. The text file created by TAS2 is "SC1_LEV.2", which is opened in XL, and copy (columns A to H) and pasted to worksheet 2. Two graphs are then automatically repopulated, and lines of best fit shown for the low flow portions of the two tables. If there are zero flows then the range of the data used in the graphs will need to be changed to match- and the best fit polynomial coefficients (shown on the graphs), entered by hand just beneath each graph. Also note that the above programme sometimes generates an error for the 100%ile flow (ie the minimum flow), in the form of "-Nan" - if this occurs, replace this symbol with 0.0 as the flowrate

2b. High and low flow index data

Programme "TAS2B.EXE" was used to create a text file of calculated flows (from flow-duration results) for each year, from both the natural as well as the current ts's- for each of the following %iles. It produces the text file "SC1_LEV.2b", containing 8 columns of flows for 51 rows (ie years). This file is opened in XL via using space as a delimieter, then copied and pasted to worksheet 2b.

3. High event spells

The figures shown in this worksheet are copy and pasted from the text file SC1_LEV.3, which was created by running the programme TAS3.EXE. The four columns of figures are for Natural and Current conditions TSs files, each analysed for the 10%ile and 20%ile high events. The numbers themselves represent the length of spell in days that flows equalled or exceeded the stated value at the head of the column, in a continuous sequence

4. Low event spells

The figures shown in this worksheet are copy and pasted from the text file SC1_LEV.4, which was created by running the programme TAS4.EXE. The four columns of figures are for Natural and Current conditions TSs files, each analysed for the 80%ile and 90%ile low events. The numbers themselves represent the length of spell in days that flows equalled or were below the stated value at the head of the column, in a continuous sequence


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5. Flow duration index data

The figures shown are copied and pasted from the text file "SC1_LEV.5" , which was created by running TAS5.EXE, and using the flow duration curves (ie SC1_LEV.2) as input. Note that where flows being looked up are below the minimum on the curve being looked up, then a negative number is used to indicate this. Also note that the current calculation process breaks up the "log-flow" steps to give 25 points for co-lookup on the two flow-duration curves

6. Seasonal index data

"TAS6.EXE" was used to create the text file "SC1_LEV.6" containing monthly maxima and minima for both time sereis's. This text file was opened in XL, then copied and pasted (starting at data field A2)

7. Overbank flow index data

The programme "TAS7.EXE" was used to generate the text output file "SC1_LEV.7", given input file data from "LEV7.LST". This text file output was opened in XL and copy and pasted to worksheet 7- listing:- (a) % days with zero flow; (b) mean and standard deviation of daily flows, and; (c) Peak flow event magnitudes above a selected cut-off criteria.

8. Overbank spells index

The text file "SC1_LEV.8" contains the tabular listing of spell durations between bankfull events, after running the programme called "TAS8.EXE", which generates the text file, using the input data and output file name(s) listed in the file "LEV8.LST". The resultant tabular list of spell durations needs to be copied and pasted starting at datafiled J6 in this worksheet 8, then each copied column, ranked individually using data sort.

9. Index calculation summary Each of the 12 indices for this site are calculated from data taken from the worksheets above, and explained

Manual S teps

Once the sub-catchment files are loaded:

1. Go to the yellow tab “2a. Daily flow durn tables” 2. Find the yellow graph (E979) 3. Adjust the graph to be the 100 points before and including the first 0 data point

(refer to the data in columns A&B) 4. From the line of best fit copy the coefficients ‘a’, ‘b’ and ‘c’ into the appropriate

cells below the graph 5. Find the white graph (E1985) 6. Adjust the graph to be the 100 points before and including the first 0 data point

(refer to the data in columns A & B, refer to cell H1979 which indicates the row number of the first 0 data point.

7. From the line of best fit copy the coefficients ‘a’, ‘b’ and ‘c’ into the appropriate cells below the graph

This provides the opportunity to check the flow duration curves and identify if there is anything unusual about them which may provide insight into the index results.

If the number that is in cell L13 of the tab “7. Overbank Flow Index Data” differs from 26

8. Go to the Index Calculation Summary Tab


15

9. Adjust the range in cells B114 and B115 (ie if cell L13 of Tab “7. Overbank Flow Index Data” is 29, the range in B114 would be J6:J35 and B115 would be K6:K35)..

This provides the opportunity to check the number of overbank flow events that occur under current conditions.

The raw indices are calculated in the purple Tab “Index Calculation Summary” and a summary in the blue Tab “Index List”. The index list implements the rule that if the raw index is less than zero, the index value is set to zero. The Index List tab can be copied to a summary Spreadsheet for the catchment and the process repeated for the next sub-catchment of interest.


16

Limitations

Cessation of flow Where all current flows are zero, the calculator will not calculate meaningful index values. Under these circumstances, it is recommended that all component index values are set to zero.

Insufficient bankfull events The independence criteria for overbank events is set at 30 days. This can sometimes result in the error message shown in Figure 3.

When this occurs it is recommended that the independence criteria set in the “inputs” tab of the master spreadsheet be set to a smaller number until such time as Q_ari is able to be calculated. The Batch file TAS.BAT will need to be re-done to ensure the appropriate values are determined.

Figure 3. Sample screen displaying error message where there are insufficient bankfull events for Q_ari calculations.


17

Calculating Hydrology Score for a Node The Hydrology sub-index score at a data node is calculated by taking the average of all component scores.

Calculating Hydrology Score for a Reporting Unit The Hydrology Score for a given reporting unit is determined as the weighted median of the individual hydrology scores, where they are weighted by the length of stream represented by the point. Modelled Hydrology data will typically be available for a series of standard nodes (points) within the stream network sampled. These points will represent differing lengths of stream.

Determining the Length of Stream Represented by the Data from a Point Within a stream network, flow statistics from a point will represent a length of stream extending above and below the point until there are significant changes to the flow, for example the addition of a tributary stream of equal order or the presence of an impoundment.

To determine the length of stream represented by the data requires either manual analysis of the stream network or coding within GIS following the rules set out below (with an example from a stream network in Figure 4) for determining the upstream and downstream extents.

Ups tream extent

Follow the trunk stream upstream until either

a) the confluence of a tributary of one stream order less than the trunk stream b) a regulating structure (such as a weir or impoundment or known major

extraction point) If another data point is reached before a confluence or regulating structure, the upstream extent shall be deemed to be halfway between the two data points.

Downs tream extent

Follow the trunk stream downstream until either

a) the confluence of a tributary of the same order as the trunk stream b) a regulating structure (such as a weir or impoundment or known major

extraction point)


18

If another data point is reached before a confluence or regulating structure, the upstream extent shall be deemed to be halfway between the two data points.

Figure 4. Determining the length of stream represented by data from a point. Each coloured dot shows the location of the modelling point (node) for which hydrology scores have been calculated. The matching coloured reach shows the length of stream represented by that point.

12

3

4

567

8 9

10

Weir 12

3

4

567

8 9

10

Weir


19

Calculating the Weighted Median The weighted median is calculated by performing the following steps

1. Place the data from a sub-catchment into two columns where the hydrology score for a site is in column A and the length of stream represented by that score is in column B.

2. Sort the 2-column range on the A column. 3. Calculate the running sum of the B column 4. Find the median of the running sums in the B column and interpolate to

determine the hydrology score

For example, given the original data set shown in Table 3:

Table 3. Example data set for the calculation of the weighted median.

Site Hydrology Score (A) Associated Length of Stream (km) (B) 1 0.6 8.7 2 0.5 4.3 3 0.3 6.0 4 0.4 1.8 5 0.2 5.5 6 0.2 5.8 7 0.2 4.1 8 0.4 3.1 9 0.8 9.1 10 0.9 7.2

Sorting according to the hydrology score and adding a third column with the running sum of the lengths is shown in Table 4.


20

Table 4. Example data set sorted on the basis of the Hydrology score

Hydrology Score Associated Length of Stream (km)4

Running sum of lengths

0.2 5.5 5.5 0.2 5.8 11.3 0.2 4.1 15.4 0.3 6.0 21.4 0.4 1.8 23.2 0.4 3.1 26.3 0.5 4.3 30.6 0.6 8.7 39.3 0.8 9.1 48.4 0.9 7.2 55.6

The median of the running sum of the lengths is 24.75, and the interpolated Hydrology Score is 0.4.


21

References Arthington, A.H. and Pusey, B.J. (2003) Flow Restoration and Protection in Australian Rivers. River Research and Applications. 19:377-395

Bren, L.J. (1992) Tree invasion of an intermittent wetland in relation to changes in the flooding frequency of the River Murray, Australia. Australian Journal of Ecology 17: 395-408

Dyer, F. (2008) Tasmanian River Condition Index: Testing the Draft Method, Pilot Results and Analysis- Hydrology Sub-Index. A report to NRM South. Earth Tech. Wangaratta, Victoria.

Dyer, F.(2009) Tasmanian River Condition Index: Phase 3 Hydrology Results, Analysis and Recommendations for the Final TRCI Method. A report by Maunsell (Canberra) to NRM South. Hobart.

Earth Tech (2007a) River Condition Index (RCI) Framework for Tasmania: Recommended Approach. A report to NRM South. Earth Tech. Wangaratta, Victoria

Earth Tech (2007b) River Condition Index (RCI) Framework for Tasmania: Draft Method for Testing. A report to NRM South. Earth Tech. Wangaratta, Victoria.

Gehrke P.C., Brown, P., Schiller, C.B., Moffatt, D.B., Bruce, A.M. (1995) River Regulation and fish communities in the Murray-Darling River system, Australia. Regulated Rivers: Research and Management 11: 363-375.

Kingsford, R.T. (2000) Ecological impacts of dams, water diversions and river management on floodplain wetlands in Australia. Austral Ecology 25: 109-127.

Mackay S.J., Arthington, A.H., Werren, G. (2001) Ecological impact of weirs in the Pioneer Catchment, Queensland. In The Way Forward on Weirs, Blanch S (ed.). Inland Rivers Network: Sydney; 39-58.

Milhous, R.T., (1982) Effect of Sediment Transport and Flow Regulation on the Ecology of Gravel-bed Rivers. Gravel-Bed Rivers: Fluvial Processes, Engineering and Management, R.D. Hey, J.C. Bathurst, and C.R. Thorne Ed., Wiley, New York pp 819-842.

NRM South (2009) Tasmanian River Condition Index Reference Manual. NRM South. Hobart.

NRM South (2009a) Tasmanian River Condition Index Aquatic Life Field Manual. NRM South. Hobart

NRM South (2009b) Tasmanian River Condition Index Physical Form Field Manual. NRM South. Hobart


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NRM South (2009c) Tasmanian River Condition Index Streamside Zone Field Manual. NRM South. Hobart

NRM South (2009d) Tasmanian River Condition Index Guide to Data Analysis Tools. NRM South. Hobart.

Quinn G.P., Hillman, T.J., Cook, R. (2000) The response of macroinvertebrates to inundation in floodplain wetlands: a possible effect of river regulation? Regulated Rivers: Research and Management 16: 469-477.

SKM (2005) Development and Application of a Flow Stressed Ranking Procedure. A report to the Department of Sustainability and Environment. Victoria.

Williams, G.P. and Wolman, M.G. (1984) Downstream effects of dams on alluvial rivers. US Geological Survey Professional paper 1286, Washington, D.C.

02Book TwoHydrology User’s GuideTasmanian River Condition Index

cover fronts_Part2.pdfTRCI Hydrology User's Manual 20090915 EDITEDContentsIntroductionThe manuals in the 2009 series

User’s ManualThe Hydrology sub-index

PreparationPrimary time series filesLength of record

Site selectionSoftware and files requiredThe Fortran programs Installing the suite of programsSetting up the data structure

Calculating the IndicesDefining data and file locationsRun the Fortran programmesCONVERT.EXETas1.EXETas2.EXETas2b.EXETas3.EXETas4.EXETas5.EXETas6.EXETas7.EXETas8.EXE

Index CalculationManual Steps

LimitationsCessation of flowInsufficient bankfull events

Calculating Hydrology Score for a NodeCalculating Hydrology Score for a Reporting UnitDetermining the Length of Stream Represented by the Data from a PointUpstream extentDownstream extent

Calculating the Weighted Median

References

cover rears_Part2

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Book Two TRCI Book 3... · 2020. 8. 4. · Enquiries should be directed to: NRM South ABN 867 040...

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