HEC-HMS
FreeVerified
The US Army Corps standard for rainfall-runoff modelling — event and continuous simulation, free to use.
Hydrology & Catchment AnalysisActiveHEC-HMSSCS Curve Number
pyromb
ActiveBuild RORB, WBNM and URBS model files straight from GIS shapefiles — with companion QGIS plugins.
- Pricing
- Open Source
- License
- MIT
- Commercial use
- Permitted
- Ecosystem
- Python, QGIS
- Platform
- Windows, macOS, Linux
Install
pip install pyrombAbout pyromb
pyromb (Runoff Model Builder), by Tom Norman, removes the most error-prone step in Australian flood hydrology: hand-transcribing a catchment diagram into a RORB control vector or WBNM/URBS input file. Feed it catchment, reach and confluence shapefiles and it writes the model file; the companion QGIS plugins ("Runoff Model: RORB" and "Runoff Model: WBNM") drive it without leaving the GIS.
It is a young, focused open-source library (MIT, NumPy as the only dependency) under active development — Type 1 reaches are fully supported, with broader coverage on the roadmap. For anyone running RORB or WBNM studies regularly, it turns an afternoon of transcription and checking into a button.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
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