USER`S MANUAL - Jensen Stormwater
Contents
1. AS IS AND WITH ALL FAULTS ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED IN NO EVENT SHALL UWRI OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA INFORMATION OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THE URBAN WATERSHEDS RESEARCH INSTITUTE INC SUPPLIED OR SUPPORTED SOFTWARE SPREADSHEET DATABASE AND OTHER PRODUCT This software may be downloaded and used free of charge Copies may be made and shared but reverse engineering of the source code or its commercial distribution in total or in parts or any derivative resulting from it is not permitted without explicit written permission by the Urban Watersheds Research Institute Inc Table of Contents Table of Contents insis ii oan A okies aad eke ag es ALY OCLC LOH ip iS AA O etna naan aes Installing WO C OS Mt A a Giada RUST Wi OAC OS A ath seca daw a you ds saves seo cee se ane a Advanced ISAC a4 ots sesncaneetenteceieesteedgundgoseneud ganda sancyanaepagetsqeasaeuuega gels gaeueeanyten ga a E Ra Introduction Water Quality Capture Optimization Stat2. Min Depth to exclude non runoff events Minimum storm depth to be analyzed inches Used to exclude non runoff producing storms State of practice for urban runoff suggests between 0 06 and 0 12 in default 0 08 inches Storm Outlier Cutoff Percentage The upper percentile of the storms to use in WQCV analysis to exclude large outlier storms default 99 5 Storms above this percentile value are not used in finding the Maximized WQCV Runoff Method The type of method to use in calculating the runoff using the continuous rainfall data Two options are provided Continuous Rational and Continuos Horton s o Rational C User need to enter the Runoff Coefficient when the Continuous Rational method is selected Runoff coefficient is between 0 and 1 o Horton s Parameters Enter the following parameters when Continuous Horton s is selected Initial Infiltration Rate Available when the runoff method is Continuous Horton The initial infiltration rate in inches per hour no default recommended Final Infiltration Rate Available when the runoff method is Continuous Horton The final infiltration rate in inches per hour no default recommended Infiltration Decay Rate Available when the runoff method is Continuous Horton The infiltration decay rate in 1 0 hr units no default recommended Imperviousness Available when the runoff method is Continuous Horton The imperviousness of the basin in
3. expected range the WQ COSM math engine will be called Any messages from the WQ COSM math engine will be displayed on the left hand side of the screen If the math engine completes successfully a window will be launched where you can view the results file You will be prompted to save your input before closing the run Advanced Usage Users wishing to run a large number of input files may choose to run the WQ COSM math engine directly using a batch file or other script The math engine can be called as shown below WQ COSMMath exe i inputfile ini o outputFile html r rainfallFile csv Additional command line options can be seed by calling WQ COSMMath exe help Users may also choose to create or edit input files using tools other than the Pond Risk User Interface The required syntax for input files is provided below WQ COSM COOPID Either O or a specific station id to extract from the rainfall file cutoffPercent A value between 1 and 100 Indicates the maximum percentile storm to consider in calculations stormSepTime A value in minutes minStormDepth A depth in inches simulationType SINGLEPOINT or CONTINUOUS drainTime A wacv drain time in hours includeDates Date ranges in the form mm dd yyyy HH MM 00 mm dd yyyy HH MM 00 Multiple ranges are separated by semicolons excludeDates Date ranges in the form mm dd yyyy HH MM 00 mm dd yyyy HH MM 00 Multiple ranges are separated by semicolons reportType The ty
4. is recommended for use with WQ COSM Pervious Depression Storage in inches or millimeters has to be filled up before runoff begins and is subject to both infiltration and evaporation For grassed urban surfaces this ranges from 0 25 to 0 5 inches 6 to 13 mm and a value 0 0 3 inches 7 6 mm is recommended for use with WQ COSM Drying Time used by modelers typically varies from 1 to 14 day depending on local climate during the rainfall seasons A value of 3 days is suggested for use with WQ COSM in most of United States except in regions of prolonged precipitation and high humidity where longer periods may be more appropriate and in regions with very dry climates where shorter periods should be used
5. percent no default recommended Pervious Depress Storage Available when the runoff method is Continuous Horton The maximum pervious depression storage for the basin This is typically less than 0 5 inches default 0 40 Impervious Depression Storage Available when the runoff method is Continuous Horton The maximum impervious depression storage for the basin This is typically less than 0 15 inches default 0 10 Drying Time Available when the runoff method is Continuous Horton The time required for the basin to recover its infiltration and depression storage capacity that may vary from to 14 days default 3 days e Drain Time Emptying time for brim full WQCV in hours Typically range between 12 and 48 hours dependent on the type of BMP being analyzed default 24 hours If you have a WQ COSM project that was saved in the past It can be opened entering the directory stream and file name or searching for it using button next to the input file field WQ COSM projects are stored as qvin files which is essentially a text file with sections delimited by SectionName and parameters defined one per line using param value syntax After loading a file it can be edited just like a new system but be sure to save the file either using the exiting name or a new name to preserve your edits for future use To run the current WQ COSM project press the run button Assuming all input parameters are within the
6. USER S MANUAL Water Quality Capture Optimization and Statistics Model WO COSM April 2011 Edition rev 7 23 2011 Copyright of this manual and the software it describes April 1 2011 by Urban Watersheds Research Institute Inc Denver CO USA All rights reserved DISCLAIMER AND TERMS OF USE ATTENTION TO PERSONS AND ORGANIZATIONS USING ANY URBAN WATERSHEDS RESEARCH INSTITUTE INC SUPPLIED OR SUPPORTED SOFTWARE SPREADSHEET DATABASE OR OTHER PRODUCT It is likely that some non conformities defects and errors with the products or their intended use will be discovered as they are used We welcome user feedback in helping to identify these potential problems so that improvements can be made to future releases of Urban Watersheds Research Institute Inc supplied or supported software spreadsheet database or other product Any of the aforementioned may be shared with others without restriction provided this disclaimer accompanies the product s and each user agrees to the terms that follow BY THE INSTALLATION AND OR USE OF ANY URBAN WATERSHEDS RESEARCH INSTITUTE INC SUPPLIED OR SUPPORTED SOFTWARE SPREADSHEET DATABASE OR OTHER PRODUCT THE USER AGREES TO THE FOLLOWING THE URBAN WATERSHEDS RESEARCH INSTITUTE INC SUPPLIED OR SUPPORTED SOFTWARE SPREADSHEET DATABASE AND OTHER PRODUCT ARE PROVIDED BY URBAN WATERSHEDS RESEARCH INSTITUTE INC UWRI AND ITS CONTRACTORS ADVISORS AND REVIEWERS CONTRIBUTORS
7. esult from urbanization Flow through BMPs are primarily used to remove gross pollutants consisting of floating trash and coarse sediment but for the most part do not remove fine sediment and associated pollutants bacteria and dissolved constituents in significant amounts A WQCV is a part of the following types of BMPs Total storage for an Extended Detention Basin i e dry basin EDB As surcharge storage above the permanent pool of a Retention Pond i e wet pond RP As surcharge storage above the permanent pool of Wetland Basin WB Above or upstream of a Media Filters MF Above of upstream of a Rain Gardens RG sometimes called bio retention cell The size 1 e volume of the WQCV vessel or basin dependent on the runoff that results over time at the catchment and the time it takes to empty a brim full WQCV vessel i e the rate of discharge from the vessel when there is no additional runoff entering it WQ COSM is implemented as two programs a user interface and the math engine The user interface collects information from the user generates properly formatted input files for the math engine and displays the results after the math engine has successfully processed the information in the input file This manual provides information for installing and running WQ COSM For information on the underlying math model the user is referred to other sources such as the following two Guo James C Y and Urbonas Ben 2002 R
8. here hour 25 column contains the daily total that WQ COSM does not use o F There should be two of these to the right of each VALUE or HOUR N column This header indicates that the column holds flags associated with the data Currently WQ COSM ignores i e does not use any of the flagged data It is recommended the user screen the raw data from the NCDC by first opening it in Excel and examining the flags This examination may cause the user to exclude certain data ranges from analysis e Location The user input location describing the location of the rainfall gage used or the location of the project e WQ COSM Output File Enter the output file name including its directory o The software will generate an HTML format file used to inspect the report generated by the WQ COSM Math engine If the display of the results does not occur add the extension html at the end of the file name i e html o This file will be overwritten each time the model runs unless the user specifies a new file name for the subsequent run o The information contained in the report varies depending on the value of the WQ COSM Output Report Type specified by the user e WQ COSM Output Report Type User may specify the type of WQ COSM report to generate The different report types are o Type 1 WQCV summary report Provides a table of all Water Qaulity Capture Volumes calculated by both Volume Capture Ratio and Event Capture Ratio methods and di
9. istical Model WQ COSM is a Windows based computer program that uses recorded rainfall data from the National Climatological Data Center NCDC and information about the catchment s hydrologic parameters to help the user determine the water quality capture volume WQCV and the maximized WQCV for any type of stormwater treatment facility 1 e structural Best Management Practice BMP that captures runoff in temporary storage vessel for mitigating of hydrologic changes caused by urbanization and treatment of water quality through sedimentation biological uptake of pollutants and or filtration infiltration This program replaces a DOS based program called PondRisk ref Guo James C Y 1986 PONDRISK Computer Model for Determination of Maximized Detention Volume Dept of Civil Engineering U of Colorado Denver Denver Colorado WQ COSM provides a modern user interface and adds additional functionality that was not available in PondRisk WQ COSM computes runoff using continuous runoff simulation using either Rational Method or Horton s infiltration method and calculates the WQCV based on the runoff simulation WQCY is an integral part of any BMP that remove significant portions of pollutants from the majority of runoff events and to help mitigate the hydrologic changes caused by urbanization These BMPs differ from flow through BMPs that do not have a WQCV and do not mitigate the effects of increased stormwater runoff peaks and volumes that r
10. new file Input Parameters Simulation Time Step 60 ja NWS Rainfall File Location WQCOSM Output File WQCOSM Output Report Type 1 v WOQCOSM Storm Output File Include Dates Exclude Dates Minimum Storm Separation Time 6 gt hours Min Depth to exclude non runoff events 0 08 Sm Storm Outher Cutoff Percentage 99 5 Drain Time Time to empty the full WOCY 24 0 hours Runoff Method CONTINUOUS HORTON v Imperviousness 0 31 Init Inf Rate 0 00 inghe Final Inf Rate 0 00 infhr Inf Decay Rate 0 00 2 tthe Perv Depression Storage 0 00 Sin 3 Description A Runoff Method Selects type of WOCY analysis to use x Figure 1 WQ COSM user interface for the entry of project parameters Simulation Time Step The time step of the rainfall file in minutes options are 15 minutes and 60 minutes i e 1 hour defaults to 60 minutes NWS Rainfall File Program uses the comma separated values csv formatted precipitation data obtained from the National Climatological Data Center NCDC operated by NOAA The 15 minute and the 1 hour data formats are very similar The only difference 1s that an hourly file has 25 time precipitation value pairs per row while the 15 minute file only has one Either file must have at least three lines The first line contains column headers The second line is ignored to allow compatibility with files downloaded from the NCDC website All remaining lines should contain values a
11. nstalled using the Add Remove Programs dialog in Windows or by re running the installer and selecting the Uninstall option Using WQ COSM To use WQ COSM browse on your computer to Start gt All Programs gt UWRI Programs and click on WQ COSM This will launch the user interface and open up a new WQ COSM project Figure 1 is the user interface that will appear Parameters are entered or edited using the Input Parameters section of the interface located on the right hand side of the screen When entering or editing parameters once the parameter is selected by the use a brief description of the selected parameter is provide in the Description area at the bottom right hand side of the screen The values that can be entered or edited under Input Parameters of the WQ COSM user interface are as follows e Input File For a new run enter the name without a file extension of the file that holds the WQ COSM input parameters including its directory location Software assigns a standard extension wqin The directory location where you want to place this file may be found using the button To locate an existing input file use the button to navigate yourself to where the file is located 5 WQCOSM 1 0 5 4 Water Quality Capture Optimization Statistical Model Program Log INFO MainWindow loadinputFile Load process cancelled by user Input File Press to load or type name for
12. pe of output report to generate Plus one of the following sections HortonBasin initInfRate Initial infiltration rate in in hr finalInfRate Final infiltration rate in in hr infDecayRate Infiltration decay rate in 1 hr imperviousness Basin imperviousness in percent pervDepStg Pervious depression storage capacity in inches impervDepStg Impervious depression storage capacity in inches dryingTime The drying time of the basin in days RationalBasin n A f rationalCoeff The runoff coefficient of the basin Between O and 1 APPENDIX A Ranges in Rainfall Losses for Rational and Horton s Methods Rational Runoff Coefficient C This coefficient varies with soil type and degree of effective imperviousness of the catchment between 0 0 and 1 0 Based on EPS s Nationwide Urban Runoff Program Data from over 60 different sites in United States and the follow up analysis performed by the Urban Drainage and Flood Control District UDFCD in the Denver Region the following tables offer suggested values when selecting values of C for use with WQ COSM to find the WQCV Percentage Imperviousness Runoff Coefficient by NRCS Hydrologic Soil Groups 0 10 20 30 40 50 60 70 80 90 100 Horton s Method Parameters The following infiltration parameters are suggested and are based for pervious surfaces originally suggested by Akan 1993 and others and for impervious surfaces suggested by a number of investiga
13. splays the maximized capture volumes for each method User may copy and paste the tables generated for subsequent analysis or generation of figure using Excel or other software o Type 2 Statistical summary report Provides a statistical summary of the storm population along with the maximized water quality capture volume for both Volume Capture Ratio and Event Capture Ratio methods o Type 3 Storm summary report Provided a table of all storms processed by the WQ COSM program that include total precipitation runoff storm duration time the storm starts and dry period separating the start of the storm and the end of the storm that occurred Water quality capture information is not reported Storm Output File If the user elects this option a comma separated file of the same name as the input file is generated that contains all the data listed in Type 3 output above This file will be overwritten by subsequent runs unless a different input file name is used User may import this file into Excel or other software for further analysis Exclude dates Launches a dialog that allows the user to select dates to exclude from analysis Typically this would be used to exclude data from the winter season If no dates are specified WQ COSM will consider the entire input file Minimum Storm Separation Time Minimum time between consecutive rainfall events that marks the start of a new storm hours Typically between 3 24 hours default 6 hours
14. ssociated with the headers from the first line The column headers in order are o COOPID The Station ID number This should be the same for all lines o CD The Cooperative Network Division Number WQ COSM does not use it o ELEM The type of data stored in this record WQ COSM does not use it o UN The minimum reporting increment of the precipitation data May be either HI when data is reported in hundredths of an inch increments or HT when data is reported tenths of an inch increments o YEAR Four digit year of the data on the current line o MO Two digit month of the year o DA Two digit day of the month o TIME Depending on the type of NCDC data used i e 15 minute or 1 hour the format will differ For the one hour data there are 25 entries of rainfall depth per line one for each hour plus 1 for the daily total For the 15 minute data there is only one rainfall depth entry per line with the 25 hour line being the daily total value WQ COSM does not use the daily total values o One value of precipitation depth immediately to the right of each TIME column The headers vary between the 15 minute and 1 hour data files For 15 minute data the columns are TIME and VALUE the second being the depth value Or For 1 hour data the columns that follow are pairs of TIME and HOUR N and Value Where HOUR N is a header for the precipitation depths for times 1 through 25 i e hours 1 00 through 25 00 of the day w
15. tors and the studies done by UDFCD Horton s Initial Infiltration by Soil Type Soil Type nm i 254 Dry loam soils with dense vegetation 60 152 Horton s Infiltration Decay Rate can vary considerably Most reported values in use by modelers range from 2 to 6 hr 0 00056 to 0 00167 sec Because there is little sensitivity in final results after the value of 3 hr is used it is recommended for use with WQ COSM when evaluating B C and D soil types and a value of 2 hr when evaluating type A soils Horton s Final Infiltration Rate by Soil Type Final Infiltration Rate Soil Type inh mmh Clay loam silty clay loam sandy clay silty clay clay 0 00 0 05 0 00 1 3 Sandy clay loam 0 05 0 15 1 3 3 8 Silt loam loam 0 15 0 30 3 8 7 6 Sand loamy sand sandy loam 0 30 0 45 7 6 11 4 The final or minimum infiltration rate is often the saturated hydraulic conductivity rate of the soil Impervious Surface Depression Storage can also vary considerably depending on the type of the surface and its condition Water stored in depressions on impervious areas is lost through evaporation Kidd 1978 developed the following relationship for depression storage as a function of catchment slope which has a regression coefficient of 0 85 D K 0 0303 57 49 In which D depression storage inches and S catchment slope percent Typical values in use by modelers range form 0 04 to 0 12 A value of 0 08 inches
16. unoff Capture and Delivery Curves for Storm Water Quality Control Designs ASCE J of Water Resources Planning and Management Vol 128 Vo 3 May June Urbonas B Guo Jim C Y Tucker L S 1990 Maximization of Stormwater Quality Volume Urban Stormwater Quality Enhancement Proceedings of an Engineering Foundation Conference held in October 1989 Davos Switzerland published by ASCE Reston MD Description of the WO COSM Computer Model to Generate a Capture Volume for Stormwater BMPS a special report posted on www urbanwatersheds org and www udfcd org websites under technical papers Installing WQ COSM WQ COSM is distributed as a Microsoft Installer package msi To install simply double click on the WQ COSM msi installer During the installation process you will be prompted to select an installation type The Typical install is appropriate for most users If you select the Custom option you will with have the option of selecting individual components to install but unless you have and or are prepared to install your own support software for the preparation of input files for this model other options than Typical would be of no benefit and should not be used Certain components used by WQ COSM particularly Nokia s Qt Framework are released under the GNU LGPL Under the terms of this license you are permitted to omit installation of these components in favor of your own version WQ COSM can be uni
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