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

Windows    

The Windows setup package contains HEC-HMS 4.0. After starting the program, Documentation and Sample projects are available from the Help menu.

HEC-HMS 4.0 has been tested on Windows XP, Vista, 7, 8, and 8.1 (32-Bit and 64-Bit).

Download HEC-HMS 4.0 for Windows (74.0 MB) [Release Notes]

Archived Versions:
Download HEC-HMS 3.5 for Windows (57.0 MB) [Release Notes]
Download HEC-HMS 3.4 for Windows (65.8 MB) [Release Notes]
Download HEC-HMS 3.3 for Windows (46.9 MB) [Release Notes]
Download HEC-HMS 3.2 for Windows (46.8 MB) [Release Notes]
Download HEC-HMS 3.1.0 for Windows (46.7 MB) [Release Notes]
Download HEC-HMS 3.0.1 for Windows (26.0 MB) [Release Notes]
Download HEC-HMS 3.0.0 for Windows (28.9 MB) [Release Notes]
Download HEC-HMS 2.2.2 for Windows (10 MB) [Release Notes]
Download HEC-HMS 2.2.1 for Windows (10 MB) [Release Notes]
Download HEC-HMS 2.2.0 for Windows (10 MB) [Release Notes]
Download HEC-HMS 2.1.3 for Windows (10 MB) [Release Notes]
Download HEC-HMS 2.1.2 for Windows (10 MB) [Release Notes]
Download HEC-HMS 2.1.1 for Windows (10 MB) [Release Notes]



Solaris (64-bit SPARC)    

The self extracting package that contains HEC-HMS 4.0 is not available at this time. Please check this web page periodically to see if the Solaris version is available.

Archived Versions:
Download HEC-HMS 3.5 for Solaris (75.4 MB) [Release Notes]
Download HEC-HMS 3.4 for Solaris (77.0 MB) [Release Notes]


Linux (32-bit x86)    

The self extracting package that contains HEC-HMS 4.0 is not available at this time. Please check this web page periodically to see if the Linux version is available.

Archived Versions:
Download HEC-HMS 3.5 for Linux (65.8 MB) [Release Notes]
Download HEC-HMS 3.4 for Linux (67.6 MB) [Release Notes]