HEC-RAS versions

Performs steady and unsteady flow calculations
6.5
Mar 5, 2024
5.0
Mar 15, 2016
Review
4.1
Mar 10, 2010
Review
4.0
May 15, 2008
Jul 25, 2008
3.1
Mar 3, 2008

What's new

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

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HEC-EFM
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RASPLOT
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