EPA/600/R-14/413b Revised September 2015 www2.epa.gov/water-research United States - - Environmental Protection Agency Storm Water Management Model User's Manual Version 5.1 Office of Research and Development Water Supply and Water Resources Division EPA- 600/R-14/413b Revisied September 2015 Storm Water Management Model User’s Manual Version 5.1 by Lewis A. Rossman Envronmental Scientist, Emeritus U.S. Environmental Protection Agency National Risk Management Research Laboratory Office of Research and Development U.S. Environmental Protection Agency 26 Martin Luther King Drive Cincinnati, OH 45268 September 2015 ACKNOWLEDGEMENTS This manual was prepared by Lewis A. Rossman, Environmental Scientist Emeritus, U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory. ii DISCLAIMER The information in this document has been funded wholly or in part by the U.S. Environmental Protection Agency (EPA). It has been subjected to the Agency’s peer and administrative review, and has been approved for publication as an EPA document. Note that approval does not signify that the contents necessarily reflect the views of the Agency. Mention of trade names or commercial products does not constitute endorsement or recommendation for use. NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represent that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government, any agency thereof, or any of their contractors or subcontractors. The views and opinions expressed herein do not necessarily state or reflect those of the United States Government, any agency thereof, or any of their contractors. iii CONTENTS ACKNOWLEDGEMENTS ............................................................................................................... II DISCLAIMER ................................................................................................................................. III CHAPTER 1 - INTRODUCTION ................................................................................................... 12 1.1 What is SWMM ................................................................................................................ 12 1.2 Modeling Capabilities ...................................................................................................... 13 1.3 Typical Applications of SWMM ........................................................................................ 14 1.4 Installing EPA SWMM ..................................................................................................... 14 1.5 Steps in Using SWMM ..................................................................................................... 15 1.6 About This Manual ........................................................................................................... 16 CHAPTER 2 – QUICK START TUTORIAL .................................................................................. 18 2.1 Example Study Area ........................................................................................................ 18 2.2 Project Setup ................................................................................................................... 18 2.3 Drawing Objects .............................................................................................................. 21 2.4 Setting Object Properties ................................................................................................. 24 2.5 Running a Simulation ...................................................................................................... 28 2.6 Simulating Water Quality ................................................................................................. 38 2.7 Running a Continuous Simulation ................................................................................... 42 CHAPTER 3 – SWMM’S CONCEPTUAL MODEL ....................................................................... 46 3.1 Introduction ...................................................................................................................... 46 3.2 Visual Objects .................................................................................................................. 46 3.3 Non-Visual Objects .......................................................................................................... 57 3.4 Computational Methods ................................................................................................... 72 CHAPTER 4 – SWMM’S MAIN WINDOW .................................................................................... 80 4.1 Overview .......................................................................................................................... 80 4.2 Main Menu ....................................................................................................................... 81 iv 4.3 Toolbars ........................................................................................................................... 84 4.4 Status Bar ........................................................................................................................ 86 4.5 Study Area Map ............................................................................................................... 87 4.6 Project Browser ............................................................................................................... 88 4.7 Map Browser.................................................................................................................... 89 4.8 Property Editor ................................................................................................................. 91 4.9 Setting Program Preferences .......................................................................................... 92 CHAPTER 5 – WORKING WITH PROJECTS .............................................................................. 94 5.1 Creating a New Project .................................................................................................... 94 5.2 Opening an Existing Project ............................................................................................ 94 5.3 Saving a Project .............................................................................................................. 94 5.4 Setting Project Defaults ................................................................................................... 95 5.5 Measurement Units ......................................................................................................... 97 5.6 Link Offset Conventions .................................................................................................. 97 5.7 Calibration Data ............................................................................................................... 98 5.8 Viewing All Project Data ................................................................................................ 100 CHAPTER 6 – WORKING WITH OBJECTS .............................................................................. 101 6.1 Types of Objects ............................................................................................................ 101 6.2 Adding Objects .............................................................................................................. 101 6.3 Selecting and Moving Objects ....................................................................................... 102 6.4 Editing Objects .............................................................................................................. 103 6.5 Converting an Object ..................................................................................................... 104 6.6 Copying and Pasting Objects ........................................................................................ 104 6.7 Shaping and Reversing Links ........................................................................................ 104 6.8 Shaping a Subcatchment .............................................................................................. 105 6.9 Deleting an Object ......................................................................................................... 105 6.10 Editing or Deleting a Group of Objects ........................................................................... 105 v CHAPTER 7 – WORKING WITH THE MAP ............................................................................... 108 7.1 Selecting a Map Theme ................................................................................................. 108 7.2 Setting the Map’s Dimensions ....................................................................................... 108 7.3 Utilizing a Backdrop Image ...........................................................................................