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user`s guide. - Illinois State Water Survey

1. 1 day 2 year 1 day 10 year 1 day 25 year 1 day 50 year 7 day 2 year 7 day 10 year 7 day 25 year 7 day 50 year 18 day 2 year 15 day 10 year 15 day 25 yeas 15 day 50 year 31 day 2 year 31 day 10 year 31 day 25 year 31 day 50 year 61 day 2 year 61 day 10 year 61 day 25 year 61 day 50 year 91 day 2 year 91 day 10 year 91 day 25 year 91 day 50 year 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 44 ILSAM 3 2 User s Guide Monthly Flow Durations Parameter Parameter Parameter January Q May Q September O January Qo May Qio September O January 055 May 025 September O January Q May Oso September Q January O g May 025 September Qs January Qs May Qs September Q January Qoa May Qs September Qag January O sva May Gava September Qa yc February O June Q October Q February Q June Q October Quo February Q4 October Qas February Q June Ag October Q February 0 5 June 0 5 October Q February Qo June Og October Qa February Og June Ogg October Qo February Qayg gt June Days October Oya March Q July 0 November O March Qi July Qio November Q March Qas July Qas November Q March Qe July 054 November Q March Q Juty 0 5 November Q March Qao July Qa November O March Q July Qo I November Qs March O se July Qava November Osa April O August Q December
2. BM Proprinter dot matrix draft quality BM Proprintcr dot matrix letter quality Okidata dot matrix draft quality e Okidata dot matrix letter quality Hewlett Packard LaserJet 75 d p i Hewlett Packard LaserJet 100 d p i e HPGL Hewlett Packard plotters e DM PL Houston Instruments plotters 29 ILSAM 3 2 User s Guide B Printer Dataset Style Apply Ran exit Screen Epson lou density Epson high density IBA ProPrinter luu density 18M ProPrinter high density Okidata luu density Okidata high density HP LaserJet 75 dpi HP LaserJet 18B dpi PG DM PL fi Muve anong devices Euter Select device Figure 23 Choosing the output device If the device is a printer or a plotter then use PORT to select where the output should be sent as shown in figure 24 Depending on the device and how it is connected to your computer the output could be sent to either a COM port or an LPT port Output can also be printed directly to disk files Use the and keys to scroll among the list of ports and press ENTER to choose one B Printer Dataset Style fippiu Run Disk File LPTi Tl Move anang devices Enter Select device Figure 24 Choosing the output port 30 ILSAM 3 2 User s Guide DATASET After selecting the output device and port choose the name of the file containing output created by ILSAM Selecting the DATASET menu brings up an edit box that can be used to enter the name of the output file If IP
3. 3 cfs Annual Low Flow I i P Altered Diff At point of withdrawal 4 1 3 5 miles downstream 5 2 3 10 miles downstream 7 4 3 15 miles downstream 11 8 3 20 miles downstream 17 14 3 For many streams in Illinois low flows ordinarily occur in September or October A seasonal withdrawal such as an irrigation withdrawal may cause the lowest flows in the stream to occur at the time of pumping i e in either July or August However downstream of the withdrawal the effect of the natural variation in seasonal flows will eventually become more prominent In example 2 an irrigation withdrawal causes the lowest streamflow to occur in July but further downstream the relative effect of the withdrawal diminishes and September becomes the month of lowest flow Example 2 Seasonal Changes in Altered Flow Withdrawal 5 cfs in July July Low Flow September Low Flow Annual Low Fio ocali Presen Altere Presen Altered resen Altered o At point of withdrawal 6 1 4 4 4 1 3 5 miles downstream 7 5 25 5 5 5 2 5 2 5 10 miles downstream 10 5 7 7 7 5 2 15 miles downstream 16 11 11 11 11 11 0 20 miles downstream 24 19 17 17 17 17 0 If water is discharged to a dry stream then a portion of that discharged water will either evaporate or infiltrate into the streambed Thus the amount of flow in the stream will decrease downstream until the point where the natural flow becomes greater than zero The effect of dry streams on altered flow
4. 42 Appendix B Streamflow Parameters and Associated Indexes ssec 44 Appendix C River Basins for which the Illinois Streamflow Assessment Model Has Been Developed unicos eo det oj ttt oe eb ette 46 LIST OF FIGURES Figure 1 Some sample annual flow duration curves 2 Figure 2 Estimation of the 7 day and 91 day low flows from the daily flow records 3 Figure 3 Transformation of the annual flow duration curve to other parameters 5 Figure 4 Effect of a uniform withdrawal no minimum flow restriction on the annual flow duration curve 6 Figure 5 Estimating the effect of a uniform withdrawal with minimum flow restriction on the annual flow duration CUIVe eene 7 Figure 6 The use of minimal data in describing the flow duration curve of a user defined OCU C ALTON rain 8 Figure 7 Effects of a reservoir on the annual flow duration curve 9 Figure 8 ILSAM s opening O emnes nnns 17 Figure 9 Entering the basic parameters sss eene 18 Figure 10 Entering the stream name or code sss 20 Figure 11 Choosing from the List of Streams ssec 21 Figure 12 Entering the starting point of the reach sss 22 Figure 13 Entering a municipal effluent discharge 22 Figure 14 Entering a uniform discharge eene 23 Figure 15 Entering a uniform withdrawal sse 23 Figure 16 Entering a seasonal discharge sss 24 Figure 17 Entering a seasonal withdrawal sss 24 Figure 18 Entering user defined discharge rates flow
5. As shown in the Commands window in figure 11 the PGUP and PGDN keys are used to scroll among the listed streams Press ENTER to choose the highlighted stream A few streams are not listed in the alias file they are unnamed or have the same name as another stream These few streams must be identified by their codes only Input Stream Type the name ur code of the stream to be analyzed s List of Streams Big Rock Creek UH Blackberry Creek VI Boone Creek Breuster Creek Brunbach Creek Status choosing fron the list of streans Figure 11 Choosing from the List of Streams 4 2 2 STARTING POINT After a stream is selected a list of the points along the stream are presented as shown in figure 12 Each entry in the menu contains the stream code the mileage along that stream and possibly a description of that point Again the PGUP and PGDN keys are used to scroll through the points listed in the Commands window of figure 12 Press ENTER to choose the highlighted location Or press the INS key to insert a starting point not among those listed You will be prompted to enter the desired river mile 4 2 3 ENDING POINT Finally select the ending point of the reach The menu has the same format as the starting point menu and consists of all points between the starting point and the mouth of the major river of the basin The ending point is selected in the same manner as the starting point except an unl
6. Branch Nippersink Creek code VXN eventually flows into Nippersink Creek code V X which eventually flows into the Fox River code V File STRNET EXT identifies this downstream succession of flow and the river miles at which all tributaries flow into their receiving stream 76 ILSAM 3 2 User s Guide 4 RUNNING ILSAM ILSAM uses three executable files ILSAM32 EXE IP EXE and IPPLOT EXE and a controlling batch file ILSAM BAT Before starting make sure that you move to the drive and directory that contain these four files Start ILSAM by typing ILSAM When ILSAM begins an opening screen will display general information about the model as shown in figure 8 It will also describe the use of two keys which may be used at any time during the run e Alt Q allows you to exit ILSAM at any point during the run Alt displays the current values for many of the model s parameters Throughout the running of ILSAM two windows will be displayed at the bottom of the screen Status and Commands The Status window alerts you to the progress of the run as well as to any error or warning messages Pay attention to messages appearing in this window The Commands window describes which keys can be used in the current operation If you are not sure of what action to take next this window will provide directions ILLINOIS STREAMFLOW ASSESSMENT MODEL Version 3 2 April 1991 Illinois Department of Energy Natural Resources Illi
7. Q April Qi August Q December Q April Qo August O December 025 April Oso August O December O April Qo August O December O April Og August Og December Qa April Quo August Qu December O April Qiu August Qa December Vaya 45 ILSAM 3 2 User s Guide Appendix C River Basins for which the Illinois Streamflow Assessment Model Has Been Developed ra Q Fang du tec AIN Pd x N i ape cr O radi son A d iss FAN a i E Milwaukee Dubuque NJ Rockford io P o f DES PLAINES ng KC ING ES Y Br S vanr ar lin p PW a Rock Island f d MP e f A South Bend O 15 Paa 4 pa j E kamara I S am i CAN f Ottawa y 1T TIM ars Ng N ud 3 m 4 TU MTM q EY T Cand db Ng Ka Na A fKanraree be VERHILION 2 p m SN laa T E mf td m e oria C z J Ge A J E t M pe SS an VERMILION ASA y cc Wabash R SS a a Urbana Basin Quincy Dn z7 j EAN NG ZT N ma Y TUS EMBARRAS N NURK 4 Pa DUI Ka 4 Q Lawrencevi ile u l 37M 2 lt carvencate f za SCALE OF MILES Wadi e BAY 6 10 20 30 bo 50 CREEK SaaS p litinais State Water Survey 1 Cairo 46
8. The graph plots flow versus exceedance probability for the virgin and present flows and if a flow modification was input altered flow for the selected month The average flow values are displayed as horizontal lines extending from Qog to Q NNUAL FLOM DURATION an x River UY Te 184 51 Fox River Regional sanitary discharge 1201 0 Exc Prob Virgin Present aL tered al 3 3479 8 Figure 35 A sample annual flow duration table ANNUAL FLOM DURATION FOX BASIN Stream Fox piver 184 51 Y di 281 Mile e River Regional sanitary discharge To Go e s Flow tofs 1 Exceedence Probabi lite Figure 36 A sample annual flow duration graph 38 ILSAM 3 2 User s Guide o Lad ng 5 a Y pi 8 E o 3 L gt sm e 5 las w gt wi LI v a 51 25 33 2 33 i 18 79 5j Recurrence years Da wns in Flys e Altered Flow Yirg e zs Dz ac A sample low flow table Figure 37 2 vi la u gt H o m 5 Ll a e i h v gt Ld H im w lt 830 MOLA Recurrence years Figure 38 A sample low flow graph 39 ILSAM 3 2 User s Guide YH a 2 w a o pi 9 e an e vw 2 t amp 3 F MOd NOJ MOG 585 O som vt A non sx Ar par A sample drought flow table Figure 39 VH D g
9. analyzed While the basic parameters will not generally be changed for every run the stream reach information must be entered each time ILSAM is executed First identify the stream containing the starting point of the reach Then enter the starting point of the reach and finally select the ending point of the reach 4 2 1 STREAM NAME The menu used to select the stream name is shown in figure 10 Every stream in a basin is assigned a unique stream code ILSAM requires this code to identify the stream containing the starting point The code may be provided in one of three ways Type the code directly Type the name ofthe stream Press PGDN to obtain a list of streams from which to choose Input Stream Type the name or code of the stream to be analyzed Stream Fox River Status Choosing fron the list of ztreans Commands Dem Figure 10 Entering the stream name or code 20 ILSAM 3 2 User s Guide Typing the code directly is the fastest method but to do this you must either memorize the code associated with that particular stream or look up the code using the supplemental information provided for each river basin Entering the stream name can be efficient if the name is short and you use the same spelling given in the alias file But the easiest method is to type PGDN A menu like that shown in figure 11 will appear containing a list of all the streams located in the alias file along with their associated codes
10. enter a seasonal withdrawal Enter a withdrawal rate for each month of the year as well as the minimum streamflow for each month below which the withdrawal will cease Seasonal Vithdraval Month Withdrawal Q nin Month Withdrawal Q nin Jul Feb fug Sep Oct Nov Dec Status Entering seasonal withdraval data Commands Enter Accept value Figure 17 Entering a seasonal withdrawal 24 ILSAM 3 2 User s Guide 4 3 6 USER DEFINED DISCHARGE The user defined discharge and user defined withdrawal are basically the same flow modifications that were provided in previous versions of ILSAM There are two methods for entering a user defined discharge either input discharge rates associated with each of the annual flow duration parameters or simply enter a few pieces of information from which the discharge rates for each parameter will be extrapolated The option to enter discharge rates flow modification curve for all annual flow duration parameters is shown in figure 18 Type in the flows for each of the exceedance probabilities Flow Modification Curve Q1 85 q2 68 95 s2 916 44 915 qa 956 13888838 Status Entering entire flow modification curve Commande Enter Accept value Figure 18 Entering user defined discharge rates flow modification curve for all the annual flow duration parameters If only minimal information is to be entered you will be presented with a screen like that in
11. figure 19 First you will be asked whether the maximum discharge occurs during wet periods Respond yes Y or no N Then enter values for the average and minimum or maximum daily discharges and both the minimum and maximum monthly discharge rates ILSAM 3 2 User s Guide Minimal Information Do you wish to input the entire flow modification curve No Will the maximum discharge occur during wet periods Yes Enter the average daily discharge in cfs 8 Enter the minimum daily discharge in cfs 3 8 Entes the maximum monthly discharge in cfs 9 Enter the minimum monthly discharge in cfs 4 8 Statua Entering minimal information Commands Enter Accept value Figure 19 Entering the user defined discharge using minimal information 4 3 7 USER DEFINED WITHDRAWAL A user defined withdrawal may be input the same way as a user defined discharge by either specifying withdrawal rates for each of the annual flow duration parameters or by entering only minimal information Entering the entire curve is shown in figure 20 Flow Modiftcation Curve Status Entering entire flow modification curve Commando Enter Accept value Figure 20 Entering user defined withdrawal rates flow modification curve for all the annual flow duration parameters 26 ILSAM 3 2 User s Guide If only minimal information is to be entered you will be presented with a screen like that in figure 21 First you will be asked whether
12. flow durations are computed using a transformation from the annual flow duration curve The estimation of the Q 2 091 10 and Q710 illustrated in figure 3 ILSAM 3 2 User s Guide Springfield Sanitary District Discharge into Sugar Creek o ul o E a o Y a 2 5 10 20 30 40 50 60 70 80 90 95 98 99 99 99 99 EXCEEDANCE PROBABILITIES ASSOCIATED WITH THE STREAM S FLOW DURATION CURVE Figure 3 Transformation of the annual flow duration curve to other parameters from Knapp et al 1985 Stream low Assessment Model for the Sangamon River Basin in Illinois User s Manual Illinois State Water Survey Contract Report 358 132 UNIFORM DISCHARGE Supply a discharge amount This discharge is assumed to occur at all times therefore uniformly affecting all flow parameters 133 UNIFORM WITHDRAWAL Supply a withdrawal amount and if desired a minimum flow below which the withdrawal is assumed to cease If a minimum flow restriction is not supplied ILSAM then assumes that all available flow from the stream is withdrawn figure 4 If a minimum flow restriction is supplied then the withdrawal is equal to the amount provided only when the remaining flow is greater than the specified minimum flow Otherwise the withdrawal is zero The resulting effect on the annual flow duration parameters may not be uniform The estimation of the new flow duration curve is illustrated by a two step process in figures 5a and 5b The first step f
13. has been called after the execution of ILSAM32 EXE the output filename from that run will automatically be listed simply press enter to select it To view a different output file simply enter the name of that file To select from a list of available files enter a file specification for example by specifying DAT as shown in figure 25 STYLE After the dataset has been chosen choose the list of tables and graphs you wish to view or print Microsoft Word users may be familiar with the term style a set of formatting characteristics that can be applied to a character paragraph or to the whole document IP uses a similar definition for style a set of tables and graphs that can be applied to a list of output points For example to view only the monthly flow duration tables for June July and August a style may be defined say Summer Flow Durations that may be applied to the stream locations just analyzed by ILSAM IP remembers your list of styles from one run to the next which makes it easy to look at selected set of output over the course of many runs Selecting the STYLE menu brings up the display shown in figure 26 There are four items in the menu SELECT A STYLE TO APPLY MODIFY A STYLE CREATE A NEW STYLE and DELETE A STYLE MET Dataset MSC Figure 25 Choosing the dataset 31 ILSAM 3 2 User s Guide Style Apply Run Select a style to apply Modify a style Create a new style Delete a style et Mov
14. monthly flow duration tables and graphs 35 ILSAM 3 2 User s Guide Printer Dataset Style Apply Run Select a style to apply Modify a stule Delete a style Edit Style new style s Regular Edit output set f Mugue anung curmauds Esc Return to main menu Figure 33 Creating a new style APPLY Once a style is selected it must be applied to a set of output points Choosing APPLY brings up a list of all stream locations in the output file as shown in figure 34 Use the T and i keys to scroll among the entries Pressing ENTER toggles the entry as selected or unselected If the entry is selected there will be right quillemets to the left of the entry After selecting the desired locations press Esc Printer Dataset Styte oss Ram exit Select Paints to Output Fox BASIN LEFT AREA DESCRIPTION i EINE 192 48 lat mouth near Plana 31 09 Sa T e aa 2234 leu 22 52L 0 082169 6 Nunber of Points Selected 3 Tota1 8 Enter Toggle puint f Select all C Clear all Esc Dune Figure 34 Applying the selected style to a set of output points 36 ILSAM 3 2 User s Guide RUN Selecting the RUN menu starts the actual printing process For each stream location selected with the APPLY menu IP displays or prints all of the tables and graphs in the current style Sec section 5 3 Sample Output for samples of the output created when the RUN menu is selected All tables and graphs have the
15. monthly rate and 4 the daily rate associated with the period of lowest streamflow Designate whether the maximum rate of discharge occurs during wet or dry periods 1 e periods of high or low streamflow This determines if the fourth value the daily rate is to be a maximum or minimum value Ifthe minimum monthly rate is zero then enter the percentage of time that the discharge is not zero Figure 6 case 1 illustrates the minimal information option The percent exceedance at which the average discharge occurs DAVG is placed so that the computed area beneath the curve is equal to the average discharge rate In this case the average discharge of 1 3 cfs is estimated to occur with a duration DAVG of 30 percent 137 USER DEFINED WITHDRAWAL The user defined withdrawal is treated exactly like the user defined discharge described above The effect of the flow modification on the annual flow duration curve may be represented either by providing all 15 flow duration parameters or by supplying the 4 values of minimal information If the minimal information option is used designate whether the maximum withdrawal occurs during wet or dry periods Figure 6 case 2 also illustrates the use of the minimal information option representing a withdrawal that occurs during the dry portion of the year Since the monthly minimum is zero the user is asked to provide the percentage of time DZERO 80 percent for which the withdrawal is not zero The dura
16. not read from the dataset file There are no styles from which to choose No styles exist You must either create a style sheet file from DOS or select the Style Create menu to define one IPPLOT EXE These errors should never occur Contact the Water Survey if you receive one of these error messages Allocated memory contains data A memory allocation error occurred while initializing the plotting routines Invalid graphics device IPPLOT was run with an invalid graphics device specified IPPLOT does not recognize your video adapter Your video card was not detected to be among those needed to run IP and IPPLOT Memory allocation error There was not enough memory to initialize the plotting routines Points file could not be found IPPLOT could not locate the file created by IP containing the list of points to plot Unknown error An unspecified error occurred 43 ILSAM 3 2 User s Guide APPENDIX B STREAMFLOW PARAMETERS AND ASSOCIATED INDEXES Annual Flow Durations Drought Flows m 999 z568587555555R555 E index Parameter Parameter 6 month 10 year 6 month 25 year 6 month 50 year 9 month 10 year 9 month 25 year 9 month 50 year 12 month 10 year 12 month 25 year 12 month 50 year 18 month 10 year 18 month 25 year 19 month 50 year 30 month 10 year 30 month 25 year 30 month 50 year 54 month 10 year 54 month 25 year 54 month 50 year 2 3 4 5 6 7 8 9 ab 0 Parameter
17. same layout regardless of the device on which they are created with one exception due to the low resolution of its graphics screens output on CGA adapters will contain only the stream code of the current point and not the point description EXIT After RUN is completed you may return to any of the PRINTER DATASET STYLE or APPLY menus to make any changes for a future run After choosing a new set of parameters choose RUN again to view or print the output After all the runs are completed select EXIT to exit IP and ILSAM 5 3 SAMPLE OUTPUT This section contains sample output for each of the possible table and graph types There is a tablc and a graph for each of the flow categories Annual Flow Durations Low Flows Drought Flows Monthly Flow Durations The following information is provided at the top of each piece of sample output Flow category and output type table or graph Run description Stream name and code Mile of the current point on the current stream Mileage remaining to be analyzed Drainage area upstream of the current point The parameters for each of the output types were discussed in section 1 1 Streamflow Parameters Estimated in ILSAM Figure 35 shows a sample annual flow duration table The virgin and present flow conditions arc listed for each of the annual flow duration exceedance probabilities If a flow modification was input the altered flow conditions at the current point are also
18. 3 Installing ILSAM sss eH Rem meme enne 12 2 4 Options for Setting the DOS Environment 13 2 5 Plow ot Execution e a RE Rv oto t etti T 14 SPEM ERA 15 3 1 Configuration Pe Se ccoo a ft he teu teh te iat 15 32 DataFiles eee eene esee eene enne eene nennen 16 4 IATA e avec pde tare gute pP i Pre iA Ie RR 17 4 1 Entering the Basic Parameters sss Rees 18 2 1 1 Run Description Rete eec tbt ied tss 18 4 1 2 Output Filename iio 19 4 1 3 Basin Namme HH RR Re 19 4 1 4 Dataset File Extension sss eR emm eee 19 4 1 5 Input Directory e mem memes 19 41 6 Output Directo Votado me Ra m e Ro Rete 20 4 2 Entering the Stream Reach Information 20 4 2 1 Stream Name ee ee EEEE ee erat ee koe EEEE 20 422 Star ng Poit eat ia A Pst acts ta ta 2 42 3 Ending PONG aasa Kna AN BA AA IR eho eRe oes 21 4 3 Entering a Flow Modification HR eene 22 4 3 1 Municipal Effluent Discharge sss 22 4 3 2 Uniform Discharge sss memes 23 4 3 3 Uniform Withdrawal ooo tt 23 4 34 Seasonal Discharge RR eee 24 4 3 5 Seasonal Withdrawal sss eee 24 4 3 6 User Defined Discharge sss n 25 4 3 7 User Defined Withdrawal sss mes 26 23 8 HReSerVOIE d c E o pea eaa teo RS ER TR e 21 51 Disks Output eres eunte a A ta 28 52 Viewing and Printing Output 29 2 21 Blow Of Execution sso sv I e C e LEER esc d 29 522 IP MENU i e ede o Ulama 29 5 3 Sample Output RR em em nemen eene 37 Appendix A ILSAM Error and Warning Messages sss eee
19. E 1 Edit the basic parameters if necessary 2 Input the stream information A Enter the stream name or code B Enter the starting point of the reach C Enter the ending point of the reach D Enter a flow modification if necessary 3 For each point in the reach ILSAM calculates the virgin and present flow conditions and if a flow modification was entered the altered flow conditions at the current point for 154 flow parameters See section 5 1 Disk Output and Appendix B Streamflow Parameters and Associated Indexes for more information ILSAM writes out information about the point and the flow conditions for each of the 154 flow parameters to a disk file 4 ILSAM32 EXE terminates After ILSAM32 EXE has finished ILSAM BAT then calls IP EXE See section 5 2 Viewing and Printing Output for a detailed look at IP EXE When IP EXE finishes control passes back to ILSAM BAT which then exits to DOS 14 3 INPUT FILES 3 1 ILSAM 3 2 User s Guide CONFIGURATION FILES Before running ILS AM it is important to understand the structure of the two initialization files associated with ILSAM32 EXE ILSAM INI and ILSAM BDT ILSAM INI contains the list of basic parameters run description and output filename from the previous run Modification of these parameters is described in section 4 1 Entering the Basic Parameters Note The format of ILSAM INI is different from previous versions Installing ILSAM 3 2 should overw
20. Illinois State Water Survey Miscellaneous Publication 132 THE ILLINOIS STREAMFLOW ASSESSMENT MODEL Version 3 2 USER S GUIDE by Evan P Mills and H Vernon Knapp Prepared for the Illinois Department of Transportation Division of Water Resources Champaign Illinois December 1991 ISWS Mills Evan P MP 132 THE ILINOIS STREAMFLOW Loan copy ASSESSMENT MODEL 3 VERSION 3 2 USER S GUIDE sws3287 THE ILLINOIS STREAMFLOW ASSESSMENT MODEL Version 3 2 USER S GUIDE by Evan P Mills and H Vernon Knapp Illinois State Water Survey 2204 Griffith Drive Champaign Illinois 61820 7495 December 1991 TABLE OF CONTENTS 1 Introduction to ILS AM SES tl LI Streamflow Parameters Estimated in ISAMA 1 1 1 1 Annual Flow Duration Values 1 112 Monthly Row Durations oia 1 SNS toe eh e cu e cte 3 114 Drought HOowS sss RR Reemi 3 12 Identifying Locations in the Watershed 3 13 Flow Modifications nette GAB ee Pete 4 131 Municipal Effluent Discharge A 132 Uniform Discharge ue stt eto tee tote tbe 5 133 Uniform Withdrawal RR memes 5 134 Seasonal Discharge i oce Deo tete s 6 13 5 Seasonal Withdrawal sss RR ed 6 13 6 User Defined Discharge ed 6 137 User Defined Withdrawal sss TX 8 1 3 8 e tox to RET i hn tw ee Masters 9 139 Effects of Flow Modifications on Altered Flow Downstream 10 2 5 Getting Started eR AA 11 2 1 Differences from Version 3 0 sss He 11 IES ud TREND p Ree 11 2
21. basin Input files are FOX Subdirectory containing Fox input tiles Subdirectory to which Fox output is sent Kaskaskia River basin Input files are KAS Subdirectory containing Kaskaskia input files Subdirectory to which Kaskaskia output is sent Sangamon River basin Input tiles are SAN Subdirectory containing Sangamon input tiles Subdirectory to which Sangamon output is sent ILSAM 3 2 Users Guide 3 2 DATA FILES For each basin eight input data files must be provided The data contained in these eight files is described below ALIAS EXT This file contains a list of stream names and their associated stream codes Not all codes have corresponding names Some streams are unnamed and other streams may not be uniquely identified because they share a name with other streams in the watershed When you ask for a list of available streams while entering the basic parameters the list consists of the entries in this file CNTRLPT EXT This file contains the values of the 154 flow parameters of the virgin and present flow at specific sites in the watershed COEFF EXT This file contains the regional coefficients used to estimate virgin flow of ungaged sites Three coefficients are given for each of the 154 flow parameters and up to three different sets of coefficients may be provided FLOMOD EXT This file contains the flow quantity added to the existing flow in the stream to represent the effect of flow modificati
22. downstream of discharges is illustrated in example 3 Example 3 Dry Stream Discharge 3 cfs Annual Low Flow I P Altered Diff At point of discharge 0 0 3 0 43 0 2 miles downstream 0 0 2 5 42 5 4 miles downstream 0 1 1 6 41 5 8 miles downstream 3 0 4 5 41 5 ILSAM 3 2 User s Guide 2 GETTING STARTED 2 1 DIFFERENCES FROM VERSION 3 0 Users familiar with earlier versions of ILSAM should note the following differences In Version 3 2 the ILSAM model is now a group of integrated programs instead of being a single executable file The creation of output is handled by one executable file ILSAM32 EXE and the viewing and printing of output is handled by two executable files IPJEXE and IPPLOT EXE These three programs are tied together with a controlling batch file ILSAM BAT See section 2 5 Flow of Execution for more detail In Version 3 0 the user could view the output after each point along the reach was analyzed In Version 3 2 processing for all points is done before the user can view or print the output Version 32 does not allow multiple runs in a single session The format of the output file created by ILSAM has changed slightly from Version 3 0 For each point analyzed the stream name and its code is placed in the output file See section 5 1 Disk Output for more information The format of the ILSAM INI file has also changed In Version 3 2 a new file ILSAM BDT contains basin data See section 3 1 C
23. e among connands Esc Return to nain menu Figure 26 The STYLE menu An existing style is used by selecting the item SELECT A STYLE TO APPLY A list of available styles will be presented from which to choose as shown in figure 27 Use the T and 1 keys to scroll among the list of styles and press ENTER to choose the highlighted style Printer Dataset Style Apply Run Select a style tu apply Modify a style Create a new style Delete a style Annual Flow Duration Tbl Grf Regular Low Flow Table Regular Decenber MFD Table Graph Regular DF Table amp Graph Regular 1 Muue anung styles Enter Select a style Figure 27 Selecting from the list of available styles 32 ILSAM 3 2 User s Guide The output set for a particular style may be modified by choosing MODIFY A STYLE After selecting the desired style a list of flow categories will be presented as shown in figure 28 For each table or graph you wish to be a part of the style select its flow category and then choose that table or graph For example to make a Summer Row Tables style choose the Monthly flow durations style and then select the tables for June July and August A style can be comprised of any set of tables and graphs from any number of the flow categories Style BESTE Select a style to apply Create a new style Delete a style Edit Style Mane Low Plow fable yalar Type Re Select a Flou Categor Annual Flou durati
24. e older CGA adapters will display a flicker or snow if the screen is updated while the adapter is updating or refreshing the screen Users who experience this flicker while running ILSAM on a CGA equipped system should add this parameter Note however that use of the NOSNOW parameter will result in slower screen updates This parameter does not apply to EGA VGA Hercules and many newer CGA adapters Here is an example SET ILSAM delay 0 25 mono This forces ILSAM to display its screens in monochrome and to display messages for at least one quarter of a second This command can be typed from the DOS prompt however you may wish to add the statement to your AUTOEXEC BAT file or to the ILSAM BAT file For more information on using DOS environment strings consult your DOS manual 13 ILSAM 3 2 User s Guide 2 5 FLOW OF EXECUTION ILSAM uses three executable files ILSAM32 EXE IP EXE and IPPLOT EXE and a controlling batch file ILSAM BAT Before starting make sure that you move to the drive and directory that contain these four files Start ILSAM by typing ILSAM This runs ILSAM BAT which in turn calls ILSAM32 EXE After ILSAM32 EXE finishes ILSAM BAT then calls IP EXE IP EXE allows you to choose the printer to which output is sent as well as designate which tables and graphs are printed IP EXE calls the third executable files IPPLOT EXE which performs the actual printing Here is the flow of execution for ILSAM32 EX
25. e useful in determining reservoir yields for which drought severity over a lengthy period is a critical parameter Durations 6 month 9 month 12 month 18 month 30 month and 54 month Recurrence intervals 10 years 25 years and 50 years 12 IDENTIFYING LOCATIONS IN THE WATERSHED All locations identified in ILSAM occur along rivers and streams which can be identified either by name or by an identification code All sites along any individual stream are identified by the distance in miles upstream of the mouth or confluence of the stream This distance is termed the river mile One of the data files used by ILSAM is the network file which lists the river mileage and site descriptions for a large number of locations along each stream in the watershed The river mileages that identify these sites are taken from a larger listing given in Healy 1979 River Mileages and Drainage Area for Illinois Streams U S Geological Survey Water Resources Investigation 79 111 Although this publication is out of print copies of the complete listing for a particular watershed may be obtained from the Water Survey 7 day low flow 26 cis 2 5 E s 91 day low flow 4 Figure 2 Estimation of the 7 day and 91 day low flows from the daily flow records 1LSAM 3 2 User s Guide If the location of interest is not supplied in the network file and therefore not among those listed by ILSAM on your computer screen you may either choose the near
26. est point or insert your own by providing a river mile The new river mile is best estimated by examining a detailed map of the area such as a U S Geological Survey topographic map and comparing distances along the stream with the upstream and downstream entries in the listing in the network file In some cases the more detailed Healy listing will be more useful than the listing given by ILSAM The network file also provides values for watershed characteristics such as drainage area If you insert a new river mile the watershed characteristics are interpolated using the values at points listed in the network file You may also choose to edit the network file listing to insert a new river mile for which information on the watershed characteristics has been computed Use of the model is not recommended for streams whose drainage areas are less than 10 square miles 13 FLOW MODIFICATIONS Flow modifications are considered to be any definite changes in the flow volume in the stream caused by a water resources project such as a reservoir water use withdrawal or wastewater treatment plant Modifications to the flow regime induced by land use changes such as a change in vegetation or urbanization are not accounted for in the model The hydrologic analysis used to develop the ILSAM model for each watershed examined information on all of the major flow modifications in the watershed and the estimated effects of these modifications has been included i
27. gt w a i o Li tnt Don d po Nap Big Bock Cree 8 18 a AP IA l i 159 15325 U J AAP es eee eee or re I RL ERE M EE ma al ated Na 18 po oo aaa ISO MOT Recurrence years Figure 40 A sample drought flow graph 40 ILSAM 3 2 User s Guide JANUARY FLOM DURATION ae FOX BASIN Fi Ri U le 104 51 Fox River Regional sanitary discharge 1281 8 Exc Prob Virgin Present altered 2 2 i To a a H Figure 41 A sample monthly flow duration table FLOM DURATION FOX BASIN Fox Ri Uu H a 194 51 Fox River Regional sanitary discharge Bice Y s l IO 1 t Flow tofs re Exceedence Probability Figure 42 A sample monthly flow duration graph 41 ILSAM 3 2 User s Guide APPENDIX A ILSAM ERROR AND WARNING MESSAGES ILS AM32 EXE RDT file not found User must input The basin data file was not found You must enter data for one basin INI file not found Using defaults The initialization file could not be found ILSAM will use default values A minimum of zero requires you use a user defined discharge If the minimum flow is zero you should instead use the User Defined Discharge flow modification Bad Qavg The average must not be zero Bad Qmax The maximum must not be less than the average Bad Qmin The minimum cannot be less than the average Can t find x of the y datafiles No
28. igure 5a which estimates the altered flow condition at each point along the flow duration curve results in flow values that are out of order because they are not continuously decreasing from left to right The new flow duration curve is estimated by ordering these flows figure 5b ILSAM3 2 User s Guide Present flow duration curve lt 0x0x x0 Resulting altered fow duration curve i E 5 Probability of excoodanco Figure 4 Effect of a uniform withdrawal no minimum flow restriction on the annual flow duration curve 134 SEASONAL DISCHARGE This category is similar to the uniform discharge except that a separate discharge value can be provided for each of the 12 months Monthly flow duration parameters are estimated directly by adding the discharge amount Altered flow conditions associated with the annual flow duration are reconstructed using the monthly flow statistics Low flow and monthly drought parameters are estimated from a transformation of the annual flow duration 135 SEASONAL WITHDRAWAL Supply a uniform withdrawal and a minimum flow for each of the 12 months The effect of the withdrawal on the altered flow duration for each month is computed similar to the procedure by which the annual flow duration was recomputed for uniform withdrawals illustrated in figures 4 and 5 Altered flow conditions associated with the annual flow duration are reconstructed using the monthly flow statistics and low flow and
29. ins for which data is provided 4 1 4 DATASET FILE EXTENSION This field identifies the filename extension of all the input files for the current basin At present there are four standard filename extensions representing the four watersheds for which ILSAM has been developed Watershed Eilename Extension Fox FOX Kankakee KAN Kaskaskia KAS Sangamon SAN Additional filename extensions will be added as ILSAM is developed for more watersheds Users of the model if they choose to modify datasets may want to develop alternative filename extensions for these new datasets The filename extensions should be three legal DOS characters Consult your DOS manual for additional information about filenames 4 1 5 INPUT DIRECTORY This field identifies the directory that holds the input data files for the current basin 19 ILSAM 3 2 User s Guide 4 1 6 OUTPUT DIRECTORY This field identifies the directory that will hold output files created by ILSAM for the current basin An output file is created for each run The name of the output file is determined by the output directory and the output filename For example if you enter C ILSAM FOX OUTPUT as the output directory for the Fox basin and enter TEST as the output filename then output would be sent to the file called C NILSAMNFOXNOUTPUTNTEST DAT 4 2 ENTERING THE STREAM REACH INFORMATION The next set of parameters to be entered describes the stream reach to be
30. isted mileage may not be inserted 21 1LSAM 3 2 User s Guide Choose Starting Point 38 28 26 98 Harter Road 25 78 Perry Road 24 19 Owens Road 21 71 21 78 at Youngs Creek UHT Kane Dekalb County Line US HUY 638 at West Branch Big Rock Creek UHM Price Road at Welch Creek UHJ Status a Choose a starting point on UH Commands f iMove among points PgUp Goto prev page Hone Goto first point Enter Select point PgDn Goto next page End Goto last point Ins Enter unlisted mile Figure 12 Entering the starting point of the reach 4 3 ENTERING A FLOW MODIFICATION The last type of information to be entered before the analysis can begin is an optional hypothetical flow modification There are eight different kinds of flow modifications from which to choose Section 1 3 Flow Modifications provides some guidelines for under which conditions a type of modification is appropriate 4 3 1 MUNICIPAL EFFLUENT DISCHARGE Figure 13 shows the input screen used to enter a municipal effluent discharge First input the average daily discharge and press ENTER Then enter the minimum daily discharge A value will be provided that is 80 percent of the average daily discharge Ifthis value is acceptable press ENTER If not type in a new value Municipal Effluent Discharge Enter the average daily discharge in cfs 16 Enter the minimum monthly discharge in cfs 12 8 Status Enter the minisun flou default is 884 of the ave
31. istribution of flows is illustrated in figure 7 The reservoir will also change the seasonality of flows Some flow will be retained during high flow periods and be slowly released in the following weeks or months Also reservoir drawdown in late summer and fall will extend the season during which low flows occur ILSAM simulates the redistribution of flows associated with a reservoir that has an uncontrolled outlet i e a free overflow spillway but no other outflow facilities To estimate the outflow from a potential or hypothetical reservoir supply two parameters 1 reservoir surface area and 2 width of the spillway a nm 2 o x a kb 3 q o ul eo a m w gt a NATURAL FLOW X OUTFLOW FROM LA RESERVOIR N 10 20 30 40 50 60 70 80 PERCENT CHANCE OF EXCEEDANCE Figure 7 Effects of a reservoir on the annual flow duration curve ILSAM 3 2 User s Guide 139 EFFECTS OF FLOW MODIFICATIONS ON ALTERED FLOW DOWNSTREAM For municipal effluent discharges uniform discharges and uniform withdrawals the effect of the modification can usually be directly transposed downstream For example if a uniform withdrawal results in an increase in the low flow at the location of the discharge of 3 cfs then the difference between the present flow and the altered flow further downstream will continue to be 3 cfs The transposition of the flow modification downstream is illustrated in example 1 Example 1 Transposed Flows Withdrawal
32. iven in units of cubic feet per second cfs Estimates of all flow parameters are presented for both present and virgin natural or unaffected flow conditions In addition you may introduce a hypothetical or potential flow modification and have the model estimate its effect on the specified flow parameters the resulting flow is called the altered flow Row conditions may be estimated for any gaged or ungaged site in the river basin with a drainage area of at least 10 square miles 1 1 1 ANNUAL FLOW DURATION VALUES PERCENT PROBABILITY OF FLOW EXCEEDANCE For a gaging station with a record of continuous daily discharge the 2 percent flow Q is the streamflow volume that is exceeded on exactly 2 percent of the days during that period of record The 1 percent flow Q is necessarily a larger volume because it is exceeded less often A graph of some typical annual flow duration values is shown in figure 1 Parameters Qoo Qog Qos Qoo Das Q75 Q60 Q50 Qao Q25 Q15 Q10 Qs Q2 Qi and Quean 112 MONTHLY FLOW DURATIONS VALUES PERCENT PROBABILITY OF FLOW EXCEEDANCE FOR EACH MONTH OF THE YEAR The monthly flow duration values are just like the annual flow durations except the values are determined using only those daily discharges that fall within a certain month of the year For example in a 30 year streamflow record there are exactly 900 daily values for the month of April The value for Qio is the flow that is exceeded exactly 10
33. listed Figure 36 shows a sample annual flow duration graph The graph plots flow in cubic feet per second versus exceedance probability for the virgin and present flows and if a flow modification was input altered flow The average flow values are displayed as horizontal lines extending from Qos to Qj Figure 37 shows a sample low flow table The table displays the virgin and present flows and if a How modification was input altered flow for each of the low flow durations and recurrences Figure 38 shows a sample low flow graph Each graph plots the virgin and present flows and if a flow modification was input altered flow versus the low flow recurrences for a given low flow duration Figure 39 shows a sample drought flow table The table displays the virgin and present flows and i f a flow modification was input altered flow for each of the drought flow durations and recurrences Figure 40 shows a sample drought flow graph Each graph plots the virgin and present flows and if a flow modification was input altered flow versus drought recurrence for a given drought duration 37 ILSAM 3 2 User s Guide Figure 41 shows a sample monthly flow duration table for January There is a table for each of the twelve months Listed are the virgin and present and if a flow modification was input altered flow for each of the monthly flow duration exceedance probabilities Figure 42 shows a sample monthly flow duration graph for January
34. modification curve for all the annual flow duration parameters Ree 25 Figure 19 Entering the user defined discharge using minimal information 26 Figure 20 Entering user defined withdrawal rates flow modification curve for all the annual flow duration parameters sss eme 26 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Entering TESCLY OL inei Sb P vtl a tia 27 Choosing the output device mem mem emend 30 Choosing the output port sss RR RR Ie 30 Choosing the dataset c e eode Bin Hedin Uae aie a 31 The STYLE Menu cortesia oda 32 Selecting from the list of available styles 32 Selecting a flow category He emm mem emend 33 Modifying the list of annual flow duration tables and graphs reke eee 34 Modifying the list of low flow tables and graphs 34 Moditying the list of drought flow tables and graphs 35 Modifying the list of monthly flow duration tables and graphs eeee 35 Creating a new Style sss eem meer enne nens 36 Applying the selected style to a set of output points 36 A sample annual flow duration table 38 A sample annual flow duration graph sss 38 A sample low flow Table occ eese deg ter e eed 39 A sample low flow graph memes 39 A sample drought flow table sss eed 40 A sample dr
35. monthly drought parameters are estimated from a transformation of the annual flow duration 1 3 6 USER DEFINED DISCHARGE The first step in representing a user defined discharge is to develop an approximate flow duration curve for the modification You may either enter separate discharge values for all of the 15 annual flow duration parameters or may enter 4 selected values from which the remainder of the flow duration parameters are computed The second method is termed the minimal information option In both cases the discharges associated with the low flow drought flow and monthly flow duration parameters are computed by a transformation from the annual flow duration This transformation process was briefly described under category 1 3 1 Municipal Effluent Discharge ILSAM 3 2 User s Guide Presen fiow duration i ror de Ettect of withdrawal on streamfiow Streamtlow Withdrawal ceases for low flows Probability of exceedance Present flow duration curve 2 2 Resulting altered kow duration cuve Sireamtiow Probability of exceedance Figure 5 Estimating the effect of a uniform withdrawal with minimum flow restriction on the annual flow duration curve a Step 1 computing altered flows from present flows b Step 2 ordering altered flows ILSAM 3 2 User s Guide For the minimal information option supply four values 1 the average rate of discharge 2 the minimum monthly rate 3 the maximum
36. n the data files The ILSAM model can also analyze the potential effects on the streamflow of a hypothetical or potential flow modification To accomplish this you must identify the location and category of the flow modification and provide information concerning its quantity or size ILSAM then computes the altered flow condition associated with the flow modification You can introduce one of eight categories of modifications Municipal Effluent Discharge Uniform Discharge Uniform Withdrawal Seasonal Discharge Seasonal Withdrawal User Defined Discharge User Defined Withdrawal Reservoir These eight categories are defined to provide flexibility for easily describing the flow modification of interest Each category assumes a certain distribution of the discharge or withdrawal over time 13 1 MUNICIPAL EFFLUENT DISCHARGE The municipal effluent discharge category assumes that the minimum and maximum discharges occur at approximately the same time as the lowest and highest flows in the stream respectively An annual flow duration curve for the effluent discharge is constructed using information on the average daily and minimum monthly discharge and is given a standard shape similar to that shown in figure 3 The average daily and minimum monthly discharges are assumed to be equal to the 40 percent and 98 percent flows Q40 and Qog respectively The values of all other flow parameters low flows drought flows and monthly
37. nformation for each point analyzed Here is the structure of the output file Data for point 1 Stream Code 1 Stream Name 1 Mile Miles Left Drainage rea Point Description Vy P1 43 Va Ad Vg Ay 154 Stream Code 2 Stream Name 2 Mile Miles Left Drainage Area Point Description P4 AS AZ Data for remaining points Same format as above The Run Description is the one entered in the Basic Parameters menu The Stream Code is the unigue code assigned to every stream The Stream Name is the associated name as found in the alias file 1f available The Mile is the mileage of the point along the current stream The Miles Left is the mileage remaining to be analyzed And the Drainage Area is the drainage area for the given point There are three types of flow output values e Virgin Flow The estimated flow at the same stream location if the influence of the flow modifications were removed V represents the virgin flow for flow parameter n e Present Flow The estimated flow at the stream location given current conditions P represents the present flow for flow parameter n e Altered Flow The estimated flow at the same stream location if the user input flow modification was implemented A represents the altered flow for flow parameter n There are 154 flow parameters modeled by ILSAM For a complete description see appendix B Streamflow Parameters with Associated Indexes 28 ILSAM 32 User s Guide He
38. nois State Vater Survey Office of Surface Vater Resources 4 Systems Analysis Portions copyright C Microsoft Corporation 1982 1998 C Sutrasoft 1997 1989 model at any tine press Alt Q current settings press Alt Press a key to begin Figure 8 ILSAM s opening screen 17 ILSAM 3 2 User s Guide 4 1 ENTERING THE BASIC PARAMETERS After ILS AM s opening screen a list of the basic parameters 1s presented as shown in figure 9 All of the fields have defaults so you need only change those fields that require different values Edit Basic Paremeters Run Description b BASIN Output Filename TEST DAT Name Fox Dataset File Extension FOX Input Dir CINILSAMNDATANFOX Output Dir C ILSAMNDATANFOX Status Selecting basic parameter Commando t Nove among fields Esc Done Figure 9 Entering the basic parameters Use the T and i keys to scroll through the fields Or press the highlighted letter of the field label to select it To edit a field press the SPACEBAR To accept the changes press ENTER to discard them press Esc Once the values are correct press Esc to exit the menu The values will automatically be saved and used the next time ILSAM is run The six basic parameters are discussed in detail below 4 1 1 RUN DESCRIPTION The run description located at the top of all output is an arbitrary phrase or name used to distinguish output from different runs To help automate the process the descri
39. on Values are given for each of the major flow modifications in the watershed and for each of the 154 flow parameters MODIFY EXT When the present flow is computed for a site ILS AM identifies all flow modifications upstream of that site and computes their composite effect on the location of interest To eliminate excessive computation for sites affected by numerous flow modifications the composite effect is sometimes stored in MODIFY EXT This file identifies the stream code and river mile of these points and the location in MODIFY EXT containing the composite data NETWORK EXT This file contains watershed information on every stream location in the basin ILSAM searches this file for such data as a description of the location for example Fox River At Mutton Creek VV average soil permeability and which coefficients to use in computing virgin flow RESERV EXT This file contains information for each reservoir in the basin Each entry lists the location of the reservoir and its surface area width of the spillway and average soil permeability for its watershed STRNET EXT This file describes the network of streams for each basin There is information for each of the confluences encountered as one moves downstream Water that originates in the upper parts of the watershed eventually makes its way downstream to the mouth of the watershed by successfully flowing through streams of increasing size For example the water in the North
40. onfiguration Files for more information 2 2 SYSTEM REQUIREMENTS To run ILSAM Version 3 2 you need the following An IBM PC XT AT personal computer PC with 640 kilobytes Kb installed memory MS DOS or PC DOS 3 0 or greater A CGA EGA VGA graphics adapter or a Hercules compatible graphics adapter One of the following drive configurations A hard disk drive with at least one megabyte Mb of free space A high density 5 25 12 Mb or 3 5 144 Mb floppy disk drive Most PCs are now equipped with high density floppy disk drives Ifyou do not have a hard drive or a high density floppy disk drive the Illinois State Water Survey can provide help with setting up a configuration 11 ILSAM 3 2 User s Guide 2 3 INSTALLING ILSAM Make sure your computer is on and that the DOS prompt is visible Consult your DOS manual if you have any questions INSTALLING ILSAM TO RUN FROM DISKETTE If you plan to run ILSAM from diskette no installation is necessary You should however work from a backup copy so if you encounter any problems with the diskette you will still be able to make a fresh copy of ILSAM Users who have PCs with high density drives should have received ILSAM on one diskette called the Distribution Disk The program code and initialization files are located in the root directory and the data for each basin are located in their own subdirectory Users having PCs without high density drives should have received s
41. ons Lov flovs Drought flows Monthly flou durations categories Enter Select categ Figure 28 Selecting a flow category To modify the list of annual flow durations select that flow category as shown in figure 29 Use and keys to move to the table or graph entry Pressing ENTER toggles the entry as selected or unselected If the entry is selected there will be right quillemets to the left of the entry After selecting an entry press Esc To modify the set of low flow tables and graphs choose that flow category and select entries as shown in figure 30 An example of modifying the list of drought flows is shown in figure 31 An example of modifying the list of monthly flow durations is shown in figure 32 To create a new style choose the CREATE A NEW STYLE menu item An EDIT STYLE window like that shown in figure 33 will appear Two pieces of information are needed the name of the style and the output set A third piece of information is the style type which for the current version of ILS AM must be regular To edit the style name press ENTER and type in the new name replacing new style and press ENTER again Then scroll down to Edit output set and press ENTER Apply the same technique used to modify a style to define the new output set 33 ILSAM 3 2 User s Guide Style METO TUN Select a style to apply Create a new style Delete a style Edit Style Mame Annual Flow Duration Tbl G
42. ought flow graph eed 40 A sample monthly flow duration table sss AL A sample monthly flow duration graph sss 41 ILSAM 3 2 User s Guide 1 INTRODUCTION TO ILSAM ILSAM The Illinois Streamflow Assessment Model is a water resources management tool that provides statistical information on streamflow quantity primarily for low and medium flows ILSAM combines processed data from streamgage records and recent information on water use withdrawals and effluent discharges to provide its users with an assessment of the up to date changes in flow variability for all stream locations throughout a river basin ILSAM can also simulate the potential effects of hypothetical water resources projects to provide its users with an estimate of future streamflow conditions This information can be useful for evaluating the water supply for potable and irrigation use potential conflicts in water use wastewater effluent dilution standards the design of reservoirs and environmental impacts of water resources projects A list of river basins for which the ILS AM model has been developed is given in appendix C 1 1 STREAMFLOW PARAMETERS ESTIMATED IN ILSAM ILSAM produces information for 154 selected streamflow parameters including flow duration flow versus percentage of duration relationships low flows for various durations and expected return intervals The 154 parameters are described in detail in the following paragraphs All parameter values are g
43. pecial installation instructions INSTALLING ILSAM TO RUN FROM A HARD DRIVE To install ILSAM on a hard drive it is necessary to create a directory for ILSAM and men to copy the files from the diskette or diskettes to the hard drive 1 To create an ILSAM directory on the hard drive drive C type MD ILSAM 2 To copy the files into the ILSAM directory place the Distribution Disk in for example drive A then type XCOPY A C MLSAM s 12 ILSAM 3 2 User s Guide 2 4 OPTIONS FOR SETTING THE DOS ENVIRONMENT You can modify the way in which ILSAM behaves through the use ofa DOS environment variable To do this the following DOS statement is used SET ILSAM param l param 2 param n Each parameter is separated by a semicolon and can be one of the following values e DELAY x Whenever ILSAM displays a message execution stops until depending on the type of message you press a key or a certain period of time has elapsed For messages of the latter type you may specify how long the message is displayed The default is 1 5 seconds but you may change it to x seconds using this parameter Less experienced users may wish to have a longer delay in order to more easily read the messages More experienced users may prefer a shorter delay or even no delay e MONO Use this parameter to run ILSAM on a system equipped with a monochrome or LCD display ILSAM will map the colors to more easily legible shades of gray e NOSNOW Som
44. percent of the time or on 90 days Parameters Qos Qoo Qzs Q50 Q25 Q10 Q2 and Quean ILSAM 3 2 User s Guide 8 Ld x o par Uu gt a QO w o q us gt lt PERCENT CHANCE OF EXCEEDANCE Figure 1 Some sample annual flow duration curves from Knapp et al 1988 Fox River Basin Stream low Assessment Model Hydrological Analysis Dlinois State Water Survey Contract Report 454 ILSAM 3 2 User s Guide 113 LOW FLOW VALUES Each low flow parameter is defined by a duration in consecutive days and a recurrence interval in years A 7 day low flow for a given year is the lowest average flow that occurred for any 7 consecutive days within that year Figure 2 illustrates a daily hydrograph and both the 7 day and 31 day low flows that occur during this period The 7 day 10 year low flow is the 7 day low flow that occurred on average only once in 10 years Low flows with a recurrence interval of more than 10 years will be lower in magnitude than the 10 year low flow The 2 year low flow is the value expected to occur during an average year Durations 1 day 7 day 15 day 31 day 61 day and 91 day Recurrence intervals 8 2 years 10 years 25 years and 50 years 114 DROUGHT FLOWS These flows are similar to low flows except that the duration of the period is defined in months instead of days The values are average low flows developed from monthly records as opposed to daily records These values ar
45. ption may contain one or more of the provided macros A macro is a combination of characters that represent one or more words In the case of ILSAM a macro is represented by a dollar sign followed by an additional character The provided macros are listed below Description The current basin name The date the run was completed The base of the output filename The input directory The output directory The time of day the run was completed The dollar sign itself arsenes T 18 ILSAM 3 2 User s Guide For example a run description of b basin d at t would be transformed into Kaskaskia basin 06 11 91 at 12 34 00 meaning that this run was performed on the Kaskaskia basin and was completed at 12 34 p m on June 11 1991 4 1 2 OUTPUT FILENAME This field identifies the base of the output filename that is the filename without the extension which is fixed as DAT For example if the output filename is given as TEST then output would be written to the file TEST DAT The name you provide becomes the base of the filename and must contain between one and eight legal DOS characters Consult your DOS manual for information about filenames 4 1 3 BASIN NAME This field identifies the name of the basin containing the desired reach Use the and keys to scroll among legal basins Please note however that this is the list of basins given in the ELSAM BDT file and may not necessarily reflect the list of bas
46. rage Connands Enter ficcept value Figure 13 Entering a municipal effluent discharge 22 ILSAM 3 2 User s Guide 4 3 2 UNIFORM DISCHARGE Figure 14 shows the input screen used to enter a uniform discharge Simply type in the discharge and press ENTER Uniform Discharge Enter the discharge in cfs 1B Status Entering a uniform discharge Commands Enter Accept value Figure 14 Entering a uniform discharge 4 3 3 UNIFORM WITHDRAWAL Figure 15 shows the input screen used to enter a uniform withdrawal First input the withdrawal rate You will then be asked if there is a minimum flow level below which the withdrawal ceases If so press Y and then enter the minimum flow If not press N Uniform Vithdraval Enter the vithdraual in cfs 22 Is there a Flow below which the withdrawal ceases Yes Enter the minimum flow in cfs blank 8 4 Status Entering a unifor amp withdrawal Commands Enter Accept value Figure 15 Entering a uniform withdrawal ILSAM 3 2 User s Guide 4 3 4 SEASONAL DISCHARGE Figure 16 shows the input screen used to enter a seasonal discharge Enter a discharge rate for each month of the year Seasonal Discharge Month Discharge Month Discharge Jan 18 Jul Feb Status Entering seasonal discharge data Commands Enter Accept value Figure 16 Entering a seasonal discharge 4 3 5 SEASONAL WITHDRAWAL Figure 17 shows the input screen used to
47. re is a sample output file Fox BASIN v Fox River t 104 51 10 60 1201 00 Fox River Regional sanitary discharge 3437 3524 3479 2814 2889 2844 2097 2173 2128 154 188 143 119 142 97 0 519 561 516 5 2 VIEWING AND PRINTING OUTPUT While the function of ILSAM32 EXE is to produce disk output the job of IP EXE is to allow the viewing and printing of that output When ILSAM32 EXE has completed the run ILSAM BAT calls IP EXE Since IP is a stand alone program it can be run from DOS to view and print the output from previous runs of the model 5 2 1 FLOW OF EXECUTION The flow of execution for IP is as follows 1 Select the printer and output port 2 Select the output datafile 3 Select the style to apply 4 Apply the style to a list of points 5 View or print all the tables and graphs in the current style for all points selected 6 Repeat steps 1 5 25 2 2 D MENU PRINTER The Printer menu is used to select the device used to view the output The destination may be the screen to view the output a printer or a plotter There are two menu items in the PRINTER menu DEVICE and PORT Use DEVICE to select the device used for viewing or printing as shown in figure 23 Usethe and keys to move among the devices and press ENTER to select one The available devices are listed as follows Screen CGA EGA VGA or Hercules adapters supported Epson dot matrix draft quality Epson dot matrix letter quality
48. rf Type Regular Edit output set Select Annual Flow Duration Set gt Graph e53 Move anony values Enter Toggle value Esc Bone Figure 29 Modifying the list of annual flow duration tables and graphs Printer Dataset Stule App ly Run Select a style to apply Modify a style Create a new stule Delete a style Edit Style Mame Low Flow Table eua T Select Low Flow Set Table 31 day 7 day 61 day 15 day 91 day uA Move anung values Enter Toggle value Esc Done Figure 30 Modifying the list of low flow tables and graphs 34 ILSAM 3 2 User s Guide METETE Styic METUIDENNECT Select a style to apply Modify a style Create a new style Delete a style Edit Style Mane DF Table 4 Graph ype Reguiar Edit output set Seiect Drought Flow Set GRAPHS afable 18 nonth 9 wonth 38 month 12 wonth 4 nonth Moue anong values Enter Tuyyle value Esc Done Figure 31 Modifying the list of drought flow tables and graphs Printer Dataset Style Apply Run Select a style to apply Create a new style Delete a style Select Monthly Flow Duration Set Edit Style TABLES GRAPHS Mame December MFD Table Graph Jan Jan Type Regular Feb Feb Edit output set Mar Mar Apr May Hay Jun Jun Jui Jal fug fug Sep Sep Oct Oct Nov Nov Dec zm ef r Muve anong values Enter Toygle value Esc Bone Figure 32 Modifying the list of
49. rite any old copy but users who have installed ILSAM to work in the same directory as a previous version should check to make sure they are using the new version of the initialization file Here is a sample ILSAM INI file Field Name Run Description Output Filename Example Basin Sb TEST Comment Expands to Basin KASKASKIA Output sent to NLSAMKAS IOUTPUT TEST DAT The other initialization file contains data for each of the basins and is called ILSAM BDT for Basin DaTa The file contains the number of basins for which there is information the index of the basin the user was working on the last time ILSAM was run and then four pieces of information for each basin e The name of the basin The file extension for each of the input data files e The name of the directory in which the input files can be found The name of the directory in which the output files are to be written Here is an example of ILSAM BDT with data for three basins Sore ores RE oe Field Number of Basins Current Basin Name 1 File Extension 1 Input Directory 1 Output Directory 1 Name 2 File Extension 2 Input Directory 2 Output Directory 42 Name 3 File Extension 3 Input Directory 43 Output Directory 3 C NILSAMA FOX C ILSAM OUTPUT Kaskaskia KAS C ILSAM KAS C ELSAM OUTPUT Sangamon SAN C ILSAMASAN C TLSAM OUTPUT 75 Comment There are three basins The second basin Kaskaskia is current Fox River
50. t all of the datafiles required for the basin could be located Couldn t find reservoir ILSAM was not able to locate a reservoir Couldn t find stream x The stream code or name just entered is not among those listed for the current basin Error err Device dev A critical error occurred EindSite could not locate stream ILSAM was not able to locate a stream while computing the upstream dataset ILSAM doesn t recognize your video adapter ILSAM did not detect your video card as among those required to run the model That point does not lie on the stream You are attempting to insert a river mile which does not exist on this stream The NETWOR K file is inconsistent The NETWORK file is corrupt and should be replaced with a fresh copy Using only first x basins The basin datafile contains data for more basins than is listed at the top of the file ILSAM will only use the first x Zero average The average flow must be greater than zero 42 ILSAM 3 2 User s Guide IP EXE Can t find plot program IP could not locate the plot program IPPLOT EXE Can t run plot program IP could not run the plot program IPPLOT EXE perhaps as the result of low memory conditions Can t save style sheets to file filename IP could not write the list of styles to disk perhaps as the result of insufficient disk space Invalid option x IP was invoked with an unknown option x Problem reading dataset Me filename IP could
51. the maximum withdrawal occurs during dry periods Respond yes Y or no N Then enter values for the average and maximum or minimum daily withdrawals and both the minimum and maximum monthly withdrawal rates Minimal Information Do you wish to input the entire flow modification curve No Will the maximum withdrawal occur during dry periods Yes Enter the average daily withdrawal in cfs 7 Enter the minimum daily withdrawal in cfs o Enter the maximum monthly withdrawal in cfs 7 Enter the minimum monthly withdrawal in cfs o What percentage of the time does the withdrawal occur 30 Status Entering minimal information i R Connande Enter Accept value Figure 21 Entering the user defined withdrawal using minimal information 4 3 8 RESERVOIR Figure 22 shows the input screen used to enter a reservoir Two pieces of information are needed the area of the reservoir in square miles and the width of the spillway in feet area of the reservoir in square miles 3 5 width of the spillvay in feet 38 Status Entering a flow modification Connands Figure 22 Entering a reservoir ILSAM 3 2 User s Guide 5 OUTPUT 5 1 DISK OUTPUT For each run ILSAM creates an output file The filename is determined by the output directory and output filename for the given basin as described in sections 4 1 2 Output Filename and 4 1 6 Output Directory The file contains information pertaining to the entire run followed by i
52. tion of the average withdrawal rate DAVO is situated so that the area under the flow duration curve is equal to the average rate QAVG for the entire period CASE 1 DISCHARGE QAVG 1 3cfs QDAY 20 7 cfs ffr Max 20 cfs QMIN 1 0 cfs QAVG DAVG 30 QAVG DAVG 46 7 CASE 2 WITHDRAWAL QAVG 1 0 cfs QDAY 1 75 cts QAVG Average withdrawal or discharge rate QMAX 1 5 cfs DAVG Duration at which QAVG occurs OMN 200 cfs QDAY Withdrawa or discharge associated with DZERO 80 a day of extremely low streamflow QMAX Maximum monthly average QMIN Minimum monthly average DZERO Percent of time the withdrawal or discharge occurs 2 gt pi lt e u a E lt x o a o c o 2 a z c e I E z 1 DZERO 20 Mi 0 12 5 10 20 30 40 50 60 70 80 20 95 98 99 999 99 99 EXCEEDANCE PROBABILITIES ASSOCIATED WITH THE STREAM S FLOW DURATION CUAVE Figure 6 The use of minimal data in describing the flow duration curve of a user defined modification from Knapp et al 1985 Streamflow Assessment Model for the Sangamon River Basin in Illinois User s Manual Illinois State Water Survey Contract Report 358 ILSAM 3 2 User s Guide 138 RESERVOIR Reservoirs redistribute downstream flows in several ways First detention storage acts to attenuate high flows and increase medium flows Second the effect of evaporation diminishes low flows The effect of these first two factors on the annual d

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