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.
The Windows setup package contains HEC-HMS 4.11. After starting the program, Documentation and Sample projects are available from the Help menu. HEC-HMS 4.11 has been tested on Windows 10 64-Bit.
Download HEC-HMS 4.12 Beta 6 (238 MB) [Release Notes]
The disk image contains HEC-HMS 4.11. After starting the program, Documentation and Sample projects are available from the Help menu.
HEC-HMS 4.11 has been tested on macOS Monterey. Install HEC-HMS by dragging the app to the Application folder.
We do not currently use an Apple Developer account to digitally sign the application. See instructions here for running the application.
Download HEC-HMS 4.12 Beta 6 (168 MB) [Release Notes]
The Linux setup package (gzip compressed tar format) contains HEC-HMS 4.11. After starting the program, Documentation and Sample projects are available from the Help menu.
HEC-HMS 4.11 has been tested on Ubuntu 20.04 LTS. A shell script has been included in the set-up package to install dependencies.
Download HEC-HMS 4.12 Beta 6 (280 MB) [Release Notes]