HEC-RAS
FreeVerified
The world's most used hydraulic model: free 1D/2D river analysis, sediment, water quality and flood mapping.
Hydraulics & River SystemsActiveRiver Modelling2D Hydraulic Modelling
FastFlood
ActiveRapid flood modelling in the browser — steady-state inundation estimates in seconds, anywhere on earth.
by Utrecht University
- Pricing
- Free
- License
- —
- Commercial use
- Check licence
- Ecosystem
- Browser
- Platform
- Web
About FastFlood
FastFlood runs a simplified steady-state flood solver directly in the browser on global terrain data: pick a region, set a rainfall or discharge scenario, and get an inundation estimate in seconds rather than hours. Developed at Utrecht University, it uses a clever accelerated approximation of the shallow-water solution that benchmarks surprisingly well against full 2D models for screening purposes.
It will not produce design-grade results — no timing, limited structure representation — but for rapid screening, emergency response, teaching and communicating flood risk to non-modellers, nothing free is faster.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
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