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SWMM: Storm Water Management Model

The Storm Water Management Model (SWMM) is a comprehensive model for the analysis of the quantity and quality problems associated with urban runoff.
Using SWMM, the modeler can simulate all aspects of the urban hydrologic and quality cycles, including rainfall, snowmelt, surface and subsurface runoff, flow routing through the drainage network, storage and treatment.
Statistical analyses may be performed on long-term precipitation data and on output from continuous simulation.

Both single-event and continuous simulation can be performed on catchments having storm sewers, or combined sewers and natural drainage, for prediction of flows, stages and pollutant concentrations. Extran Block solves complete dynamic flow routing equations (St. Venant equations) for accurate simulation of backwater, looped connections, surcharging, and pressure flow.
SWMM can be used for both planning and design. The planning model is used for an overall assessment of the urban runoff problem and proposed abatement options. A design-level, event simulation also may be run using a detailed catchment schematization and shorter time steps for precipitation input.

The SWMM Windows interface was developed to assist the user in data input and model execution to make a complex model user-friendly. The Windows interface was developed for the Office of Science and Technology, Standards and Applied Science Division of the U.S. Environmental Protection Agency to assist them with the Total Maximum Daily Load (TMDL) program.

Because of SWMM's public domain status, extensive feedback has been received from users on needed corrections and enhancements, and the model is continuously updated through interaction with SEAM.

KEYWORDS

area: surface water - hydrology
objectives: simulation, planning
description: water quality, storm water management, water treatment, urban hydrology, snowmelt, runofrunoff/hydrology, rainfall analysis/metereology, drainage network

SOFTWARE AVAILABILITY

The program is available from:
Center for Exposure Assessment Modeling (CEAM)
U.S. Environmental Protection Agency
Office of Research and Development
Environmental Research Laboratory
960 College Station Road
Athens, Georgia 30605-2720
Tel. 706/546-3549
email: ceam@athens.ath.epa.gov

The software ca be downloaded at the EPA SWMM page.

The manuals and the documentation are available from:
Dr. Wayne C. Huber
Oregon State University
Dept. of Civil Engineering
Apperson Hall 202
Corvallis, OR 97331-2302 - U.S.A-
Tel. 503/737-6150

AUTHORS

Center for Exposure Assessment Modeling (CEAM)
U.S. Environmental Protection Agency
Office of Research and Development
Environmental Research Laboratory
College Station Road
Athens, Georgia
30613-0801 - U.S.A.
Tel. 706/546-3549

REFERENCES

  • Huber, W.C. and R.E. Dickinson, 1988 "Storm Water Management Model (SWMM), Version 4, User's Manual," EPA/600/3-88/001a. NTIS accession no. PB88 236 641.
  • Roesner, R.A., Aldrich, J.A. and R.E. Dickinson, 1988 "Storm Water Management Model (SWMM), Version 4, User's Manual Part B, EXTRAN Addendum," EPA/600/3-88/001b NTIS accession no. PB88 236 658.

VALIDATION STUDIES

  • Huber, W.C. Heaney, J.P. and B.A. Cunningham, "Storm Water Management Model (SWMM) Bibliography," EPA/600/3-85/077. NTIS accession no. PB86 136 041.

 

 

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