Provides analysis over steady and unsteady water flow, as it executes one-dimensional calculations for steady flow and two-dimensional for unsteady flows. Also, it does mobile bed computations and takes the water temperate. Sediment transport is also analyzed.
Hydrologic Engineering Center's (CEIWR-HEC) River Analysis System (HEC-RAS) allows the user to perform one-dimensional steady flow, one and two-dimensional unsteady flow calculations, sediment transport/mobile bed computations, and water temperature/water quality modeling.
v5.0 [Mar 15, 2016]
Two-dimensional and combined one- and two-dimensional Unsteady Flow Modeling
New HEC-RAS Mapper capabilities and enhancements
Automated Manning’s n value calibration for one-dimensional Unsteady Flow
Simplified Physical Breaching algorithm for Dam and Levees
Breach Width and development time calculator
New Hydraulic outlet features for Inline Structures
Sediment Transport Modeling Enhancements: Including Reservoir flushing and sluicing, as well as channel stability using BSTEM integrated within HEC-RAS
Water Quality Modeling Enhancements
Completely new two-dimensional User’s Manual
Several new example applications within the Applications Guide
Updates to User's Manual, Hydraulic Reference Manual, Applications Guide, and Help System
