History
SWMM was first developed between 1969–1971 and has undergone several major upgrades since those years. The major upgrades were: (1) Version 2 in 1975, (2) Version 3 in 1981 and (3) Version 4 in 1988. The current SWMM edition, Version 5, is a complete re-write of the previous Fortran releases in the programming language C, and it can be run under Windows XP, Windows Vista and Windows 7 and with a recomplilation under Unix. The code for SWMM5 is open open source and public public domain code that can be downloaded from the EPA Web Site.
| Release Date | Versions | Developers | FEMA | LID |
|---|---|---|---|---|
| 04/21/2011 | SWMM 5.0.022 | EPA | Yes | Yes |
| 08/20/2010 | SWMM 5.0.019 | EPA | Yes | Yes |
| 08/17/2005 | SWMM 5.0.005 | EPA, CDM | Yes | No |
| 11/30/2004 | SWMM 5.0.004 | EPA, CDM | No | No |
| 11/25/2004 | SWMM 5.0.003 | EPA, CDM | No | No |
| 10/26/2004 | SWMM 5.0.001 | EPA, CDM | No | No |
| 2001–2008 | SWMM5 | EPA, CDM | No | No |
| 1988–2004 | SWMM4 | UF, OSU, CDM | No | No |
| 1981–1988 | SWMM3 | UF, CDM | No | |
| 1975–1981 | SWMM2 | UF | No | No |
| 1969–1971 | SWMM1 | UF, CDM, M&E | No | No |
EPA SWMM 5 provides an integrated graphical environment for editing watershed input data, running hydrologic, hydraulic, real time control and water quality simulations, and viewing the results in a variety of graphical formats. These include color-coded thematic drainage area maps, time series graphs and tables, profile plots, scatter 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 under a Cooperative Research and Development Agreement (CRADA). SWMM 5 is used as the computational engine for many modeling packages plus components of SWMM5 are in other modeling packages. The major modeling packages that use all or some of the SWMM5 components are shown in the Vendor section. The update history of SWMM 5 from the original SWMM 5.0.001 to the current version SWMM 5.0.022 can be found at the EPA Download in the file epaswmm5_updates.txt. SWMM 5 was approved FEMA Model Approval Page in May 2005 with this note about the versions that are approved on the FEMA Approval Page SWMM 5 Version 5.0.005 (May 2005) and up. SWMM 5 is used as the computational engine for many modeling packages plus components of SWMM5 are in other modeling packages. The major modeling packages that use all or some of the SWMM5 components are shown in the Vendor section.
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