US Army Corps of Engineers
Hydrologic Engineering Center

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HEC-RAS

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.

HEC-RAS 7.0 Windows
The setup package includes HEC-RAS 7.0.

Primary Download Site:
Download HEC-RAS 7.0 Setup Package (184 MB) [Release Notes]

Alternate Download Site:
Download HEC-RAS 7.0 Setup Package (184 MB) [Release Notes]

Supported Operating Systems:
Windows 10/11 64-bit


HEC-RAS 7.0 Windows + Linux:
This HEC-RAS 7.0 Windows setup package includes Linux compiled compute engines. Windows Subsystem for Linux (WSL) must be installed to run the Linux enginnes on Windows PCs. However, the overhead in initiating WSL processes makes for longer computation times when compared to the native Windows engines. See the New Features page for more information.

Primary Download Site:
Download HEC-RAS 7.0 with Linux Setup Package (326 MB) [Release Notes]

Alternate Download Site:
Download HEC-RAS 7.0 with Linux Setup Package (326 MB) [Release Notes]

Supported Operating Systems:
Windows 10/11 64-bit
Linux (compute engines only)


HEC-RAS 7.0 Example Projects:

This file contains all of the HEC-RAS example projects.

Download HEC-RAS 7.0 Example Projects (407 MB)

HEC-RAS Archived Versions Windows:
Download HEC-RAS 6.7 Beta 5 Setup Package (195 MB) [Release Notes]
Download HEC-RAS 6.7 Beta 4a Setup Package (193 MB) [Release Notes]
Download HEC-RAS 6.7 Beta 3 Setup Package (193 MB) [Release Notes]
Download HEC-RAS 6.7 Beta 2 Setup Package (193 MB) [Release Notes]
Download HEC-RAS 6.7 Beta Setup Package (203 MB) [Release Notes]
Download HEC-RAS 6.6 Setup Package (209 MB) [Release Notes]
Download HEC-RAS 6.5 Setup Package (203 MB) [Release Notes]
Download HEC-RAS 6.4.1 (Primary) Setup Package (205 MB) [Release Notes]
Download HEC-RAS 6.3.1 (Primary) Setup Package (205 MB) [Release Notes]
Download HEC-RAS 6.3.1 (Alternate) Setup Package (205 MB) [Release Notes]
Download HEC-RAS 6.3 Setup Package (201 MB) [Release Notes]
Download HEC-RAS 6.2 Setup Package (201 MB) [Release Notes]
Download HEC-RAS 6.1 Setup Package and Documentation (336 MB) [Release Notes]
Download HEC-RAS 6.0 Setup Package, Documentation, and Example Data sets (729 MB) [Release Notes]
Download HEC-RAS 5.0.7 Setup Package Documentation, and Example Data sets (691 MB) [Release Notes]
Download HEC-RAS 5.0.7 Setup Package and Documentation (385 MB) [Release Notes]
Download HEC-RAS 5.0.6 Setup Package Documentation, and Example Data sets (659 MB)
Download HEC-RAS 5.0.6 Setup Package and Documentation (358 MB)
Download HEC-RAS 5.0.5 Setup Package Documentation, and Example Data sets (715 MB)
Download HEC-RAS 5.0.5 Setup Package and Documentation (414 MB)
Download HEC-RAS 5.0.4 Setup Package Documentation, and Example Data sets (715 MB)
Download HEC-RAS 5.0.4 Setup Package and Documentation (414 MB)
Download HEC-RAS 5.0.3 Setup Package Documentation, and Example Data sets (525 MB)
Download HEC-RAS 5.0.3 Setup Package and Documentation (202 MB)
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)


Download
Visit RAS 2025 Alpha page for download

Supported Operating Systems:
Windows 10/11 64-bit

HEC-RAS Tiles Server (64-bit):
Download HEC-RAS Tiles Server (14.2 MB)

HEC-RAS Tiles Server Instructions