Everybody who is interested in HEC-RAS: 1D and 2D.
The Hydrologic Engineering Center (HEC) in Davis, California developed the River Analysis System (RAS) to aid hydraulic engineers in channel flow analysis and floodplain determination. It includes numerous data entry capabilities, hydraulic analysis components, data storage and management capabilities, and graphing and reporting capabilities.
Trevor Pillar, National Partnerships Manager, ICE WaRM