Delta Hydro Studio
FreemiumVerified
Browser-based hydrology and hydraulics calculators for practising engineers — no install, report-ready output.
Urban Stormwater & InfrastructureActiveRational MethodCulvert Sizing
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
Alternatives to PCSWMM
Other urban stormwater & infrastructure tools covering similar workflow stages.
EPA SWMM
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The public-domain engine of urban drainage: dynamic-wave pipe networks, runoff, LID and water quality.
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PySWMM
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Python interface to the SWMM engine — step through simulations, read state, and control gates in real time.
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EPA National Stormwater Calculator
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EPA's free tool for estimating site runoff reduction from green infrastructure, with climate scenarios.
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EPA SSOAP Toolbox
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EPA's toolbox for sanitary sewer overflow planning — RDII analysis with the SWMM engine underneath.
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Generate SWMM inp (QGIS plugin)
Open Source
Build and read EPA SWMM models as QGIS layers — free GIS-based SWMM model construction.
Urban Stormwater & InfrastructureActiveSWMMQGIS Hydrology