Delta Hydro Studio
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Browser-based hydrology and hydraulics calculators for practising engineers — no install, report-ready output.
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EPA SSOAP Toolbox
DormantEPA's toolbox for sanitary sewer overflow planning — RDII analysis with the SWMM engine underneath.
by US EPA
- Pricing
- Gov-Public
- License
- US Government (public domain)
- Commercial use
- Permitted
- Ecosystem
- SWMM, Standalone
- Platform
- Windows
About EPA SSOAP Toolbox
The Sanitary Sewer Overflow Analysis and Planning (SSOAP) Toolbox is the EPA's tool for the defining problem of sanitary systems: rainfall-derived inflow and infiltration. It decomposes flow-monitoring records into base flow and RDII, fits the RTK unit-hydrograph parameters that describe a basin's wet-weather response, and simulates the collection system with an embedded SWMM5 engine to size relief and plan SSO controls.
The RTK methodology it operationalises is the standard language of I/I studies in North America — commercial packages fit the same parameters. Development has been quiet for years, so expect dated ergonomics, but the analysis it performs remains exactly how the work is done.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
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