Master industry-standard drainage and hydraulic modeling software with our comprehensive, step-by-step tutorial series.
Storm Water Management Model for drainage network modeling, LID controls, and water quality analysis.
Hydrologic Modeling System for watershed simulation, rainfall-runoff analysis, and flood hydrology.
River Analysis System for 1D/2D hydraulic modeling, floodplain mapping, and dam breach analysis.
These industry-standard software packages are used by engineers worldwide for drainage and hydraulic analysis.
All three software packages are free to download and use. No license fees or subscriptions required.
Accepted by regulatory agencies including FEMA, EPA, and state DOTs for official submissions.
Large user communities with forums, documentation, and resources to help you learn.
| Application | EPA SWMM | HEC-HMS | HEC-RAS |
|---|---|---|---|
| Urban drainage networks | Best | - | - |
| LID / Green infrastructure | Best | - | - |
| Watershed rainfall-runoff | Good | Best | - |
| Flood studies / FEMA | - | Good | Best |
| River hydraulics | - | - | Best |
| Dam safety / breach | - | Good | Best |
| 2D flood modeling | - | - | Best |
Choose a software package above and begin your journey to becoming a proficient hydraulic modeler.