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Storm Water Management Model (SWMM)

Authors: Lewis Rossman · Trent Schade · Daniel Sullivan · Robert Dickinson · Carl Chan · Edward Burgess
Owners: Mohamed Morsy · Anthony Castronova
Resource type:Model Program Resource
Created:Jun 03, 2015 at 7:17 p.m.
Last updated: Jun 30, 2017 at 3:29 a.m. by Mohamed Morsy


The EPA Storm Water Management Model (SWMM) is a dynamic rainfall-runoff simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas. The runoff component of SWMM operates on a collection of subcatchment areas on which rain falls and runoff is generated. The routing portion of SWMM transports this runoff through a conveyance system of pipes, channels, storage/treatment devices, pumps, and regulators. SWMM tracks the quantity and quality of runoff generated within each subcatchment, and the flow rate, flow depth, and quality of water in each pipe and channel during a simulation period comprised of multiple time steps. SWMM was first developed back in 1971 and has undergone several major upgrades since then. The current edition, Version 5, is a complete re-write of the previous release. Running under Windows, EPA SWMM 5 provides an integrated environment for editing drainage area input data, running hydraulic and water quality simulations, and viewing the results in a variety of formats. These include color-coded drainage area maps, time series graphs and tables, profile plots, and statistical frequency analyses.

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How to cite

Rossman, L., T. Schade, D. Sullivan, R. Dickinson, C. Chan, E. Burgess (2017). Storm Water Management Model (SWMM), http://www2.epa.gov/water-research/storm-water-management-model-swmm, accessed 6/30/2017, replicated in HydroShare at: http://www.hydroshare.org/resource/2cddae40e9594c21b947fdbbe4225439

This resource is shared under the Creative Commons Attribution CC BY.


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  • Public Resource  Public
  • Sharable Resource  Shareable


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The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
Lewis Rossman United States Environmental Protection Agency
Trent Schade United States Environmental Protection Agency
Daniel Sullivan United States Environmental Protection Agency
Robert Dickinson Camp Dresser & McKee Inc.
Carl Chan Camp Dresser & McKee Inc.
Edward Burgess Camp Dresser & McKee Inc.


People or organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Michael Gregory Camp Dresser & McKee Inc.
Dennis Lai United States Environmental Protection Agency
Wayne Huber Oregon State University
Content files
Computational Engine

Programming Language C
Operating System Windows XP, 7
Version 5.1.010
Website http://www2.epa.gov/water-research/storm-water-management-model-swmm?#downloads


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