HEC-RAS Online River Hydraulics & Flood Simulation
Run HEC-RAS river simulations online. 1D and 2D flood modeling, floodplain management, and USACE engine compliance in the cloud.
What is HEC-RAS and how does it work?
HEC-RAS (Hydrologic Engineering Center's River Analysis System) is the definitive river hydraulics modeling software developed by the U.S. Army Corps of Engineers. It is mandated or accepted by federal and state agencies worldwide for flood insurance studies, dam safety evaluations, and bridge/culvert design.
The system performs one-dimensional steady and unsteady flow calculations, two-dimensional unsteady flow modeling, combined 1D/2D hydrodynamic simulation, sediment transport and mobile bed computations, and water temperature and water quality modeling.
Run HEC-RAS in your browser (no installation required)
HEC-RAS traditionally demands significant desktop resources and Windows-only installation. HydroBOA eliminates these constraints by running the engine on scalable cloud infrastructure. Manage river models from any device — edit cross-sections, define flow data, configure 2D mesh areas, and execute unsteady simulations directly from your browser or mobile device.
1D/2D Flow
Terrain & Mesh
USACE Compliance
1D and 2D flood modeling cloud workflows
Handle complex 2D mesh generation, terrain processing, and multi-day unsteady flow simulations without taxing local hardware. HydroBOA's cloud infrastructure scales dynamically for large-scale dam breach analyses, regional flood studies, and coupled 1D/2D models that would overwhelm a typical workstation.
Results are delivered as interactive flood maps with depth grids, velocity vectors, and water surface elevation profiles. Export to GIS-ready formats or generate regulatory-grade PDF reports directly from the platform.
Why use HydroBOA for HEC-RAS modeling?
HydroBOA combines the USACE HEC-RAS engine with cloud scalability, automated GIS-based terrain processing, and version control built for teams working on high-stakes FEMA and USACE compliance projects. Unlike standalone desktop HEC-RAS, HydroBOA lets your team collaborate on river models in real time, with full audit trails and cross-platform access from Windows, macOS, Linux, iOS, and Android.
HEC-RAS Use Cases
Floodplain management and mapping
Dam breach analysis and impact assessment
River restoration and hydraulic design projects