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HEC-RAS has been developed for the U.S. Army Corps of Engineers (USACE). However, software developed at the Hydrologic Engineering Center is made available to the public whenever appropriate. Use is not restricted and individuals outside of USACE may use the program without charge. HEC will not provide user assistance or support for this software to non-USACE users. Downloading this software indicates full acceptance of your responsibility in the use of this program. Please see the distribution policy for more details.

Current Version HEC-RAS 5.0.3:    

These setup package include HEC-RAS 5.0.3, Documentation, and optionally the Example Projects.

Primary Download Site:
Download HEC-RAS 5.0.3 Setup Package Documentation, and Example Data sets (540 MB)
Download HEC-RAS 5.0.3 Setup Package and Documentation (214 MB)

Alternate Download Site:
Download HEC-RAS 5.0.3 Setup Package Documentation, and Example Data sets (538 MB)
Download HEC-RAS 5.0.3 Setup Package and Documentation (214 MB)

Supported Operating Systems:
Windows XP, Vista, 7, 8, 8.1, and 10 both 32-bit and 64-bit



HEC-RAS 5.0.3 Documentation:    

Release Notes
What's New



HEC-RAS 5.0.3 Example Data:    

This file contains all of the HEC-RAS example data sets.

Download HEC-RAS 5.0 Example Data (323 MB)



HEC-RAS Tiles Server (64-bit):    

Download HEC-RAS Tiles Server (14.2 MB)

HEC-RAS Tiles Server Instructions



Archived Versions:    

Download HEC-RAS 5.0.1 Setup Package Documentation, and Example Data sets (525 MB)
Download HEC-RAS 5.0.1 Setup Package and Documentation (202 MB)
Download HEC-RAS 5.0 Setup Package Documentation, and Example Data sets (525 MB)
Download HEC-RAS 5.0 Setup Package and Documentation (202 MB)
Download HEC-RAS 4.1 (49.7 MB)
Download HEC-RAS 4.0 (45.4 MB)
Download HEC-RAS 4.0 Beta (35.6 MB)
Download HEC-RAS 3.1.3 (39.7 MB)
Download HEC-RAS 3.1.2 (44.6 MB)
Download HEC-RAS 3.1.1 (19 MB)
Download HEC-RAS 3.0 (24.5 MB)
Download HEC-RAS 2.2 (8 MB)