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Storm Water Management Model (SWMM)
WWQTCS Info
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.
This latest re-write of EPA SWMM was produced by the Water Supply and Water
Resources Division of the U.S. Environmental Protection Agency's National Risk
Management Research Laboratory with assistance from the consulting firm of
CDM, Inc.
SWMM Homepage - Download the model or get additional information
SWMM Model Fact sheet (PDF, 1 pp., 489 KB, about PDF)
Technical Support Center fact sheet (PDF, 2 pp., 733 KB, about PDF)
TMDL fact sheet (PDF, 2 pp., 697 KB, about PDF)