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HEC-EFM 4.0:    

HEC-EFM version 4.0 is available as an install package (.exe) or as an archive of files (.zip). Both are easy to use and have the same content. The install package guides the user through the install process and requires administrative rights for successful use. Installing with the archive of files does not require administrative rights. Simply extract all contents of the archive to the desired computer location for HEC-EFM. The software will be ready for use after extraction. The executable file for HEC-EFM is entitled "EFM.exe". The program's Help
menu will provide access to the Quick Start Guide and demonstration project.

HEC-EFM has a separate accessory called HEC-EFM Plotter that helps users view, navigate, and interpret model output. For more information or to obtain a copy of that software, please visit the website for HEC-EFM Plotter.

HEC-EFM has a separate accessory called HEC-GeoEFM that helps users manage and analyze spatial outputs of the HEC-EFM process. For more information or to obtain a copy of that software, please visit the website for HEC-GeoEFM.

Download HEC-EFM 4.0 (install package) for Windows (71.3 MB) [Release Notes]
Download HEC-EFM 4.0 (archive of files) for Windows (12.6 MB) [Release Notes]

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



Archived Versions:    

Download HEC-EFM 3.0 .NET for Windows (9.85 MB) [Release Notes]; [HQ Cert Memo]; [PCX Cert Memo]
Download HEC-EFM 3.0 for Windows (10.2 MB) [Release Notes]; [HQ Cert Memo]; [PCX Cert Memo]
Download HEC-EFM 2.0 for Windows (9.02 MB) [Release Notes]; [HQ Cert Memo]; [PCX Cert Memo]
Download HEC-EFM 1.0 for Windows (8.12 MB)