HEC-HMS
US Army Corps of Engineers
Image source: www.hec.usace.army.mil
Download from the vendor
www.hec.usace.army.mil
A hydrological model computing the discharge generated by a rain event over a catchment: subbasin division, infiltration and loss calculation, unit hydrograph, and routing through channels and reservoirs. It is the hydrological half that complements HEC-RAS — this one produces the flow, that one conveys it down the channel. Also distributed free by the Corps of Engineers.
Ratings & Reviews
| Licence type | Completely Free |
|---|---|
| Licence terms | US government software, distributed free and in the public domain, with no licence and no usage restriction. Built around US data and standards — adapt to local codes before use in design. |
| Platforms | Linux, macOS, Windows |
| Engineering field | Civil Engineering, Environmental & Water |
| Tool type | Hydrology & Drainage |
| Vendor site | www.hec.usace.army.mil |
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Last verified: 2026-09-02
