InfoWorks ICM
Commercial
Autodesk's integrated catchment model — the heavyweight for large sewer networks and coupled 2D flooding.
PCSWMM
ActiveCHI's commercial GIS front-end for SWMM — the most direct productivity upgrade for serious SWMM users.
by CHI (Computational Hydraulics International)
- Pricing
- Commercial
- License
- Proprietary
- Commercial use
- Permitted
- Ecosystem
- SWMM
- Platform
- Windows
About PCSWMM
PCSWMM wraps the unmodified EPA SWMM engine in a professional GIS-native environment: model building from GIS layers, scenario management, calibration tools (including SRTC sensitivity-based calibration), 1D-2D overland flooding, radar rainfall support and strong result visualisation. Because the engine is stock SWMM, models remain fully interchangeable with the free tool and with reviewers.
That interchangeability is the honest pitch: PCSWMM sells time, not a different answer. For utilities and consultancies living in SWMM daily, it is usually the cheapest of the commercial urban-drainage suites and the least lock-in-prone.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
Appears in collections
- The SWMM Ecosystem
The public-domain urban drainage engine and everything that grew around it.
Alternatives to PCSWMM
Ranked by the topics, categories and workflow stages they share with PCSWMM.
EPA SWMM
Gov-PublicVerified
The public-domain engine of urban drainage: dynamic-wave pipe networks, runoff, LID and water quality.
Causeway Flow
Commercial
Storm and foul water drainage design and 1D hydraulic modelling software for UK and Irish civil engineers.
LocalSWMM
Open Source
Browser-based urban stormwater and drainage modeling powered by OpenSWMM 6 compiled to WebAssembly.
Generate SWMM inp (QGIS plugin)
Open Source
Build and read EPA SWMM models as QGIS layers — free GIS-based SWMM model construction.
EPA SSOAP Toolbox
Gov-Public
EPA's toolbox for sanitary sewer overflow planning — RDII analysis with the SWMM engine underneath.