The Ecosystem Functions Model (HEC-EFM) is designed to help study teams determine ecosystem responses to changes in the flow regime of a river or connected wetland.
Publisher’s description
What is HEC-EFM?
HEC-EFM is a proprietary program for Windows from Hydrologic Engineering Center.
Installation and requirements
Official installers exist for 32-bit as EXE. The main installer is 37.7 MB. The installer supports unattended (silent) installation.
Updates and version history
The current version is 6.0, released on March 11, 2025. 2 versions are listed since October 19, 2022, each with links to its own installer files. That is about 0.8 releases a year. The last update is more than a year old.
Pros / Cons
Pros
- Documented silent install
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
- 32-bit only
- No update for more than a year
In short: HEC-EFM is a Windows tool for 32-bit PCs. Updates have slowed down. Administrators can deploy it unattended.
Is HEC-EFM safe to download?
- The file is served by hec.usace.army.mil; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
76ED9EBABD9A6617E7B24AD68032AACFCFEB0ECFE18AC84339B14853B1680B00· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 2 versions ›2 versions over 2 years · about 0.8 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 6.0Latest | March 11, 2025 | 37.7 MB | 32-bit EXE |
| 5.0 | October 19, 2022 | — | 64-bit EXE |
Install from the command line
Silent install ›winget install --id HydrologicEngineeringCenter.HEC-EFM -eHEC-EFM_60_Setup.exe /S /v/qnRelated guide: How to use winget: install and update apps
Information
- Publisher
- Hydrologic Engineering Center
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- EXE
- Version
- 6.0
- Released
- March 11, 2025
- Added to the catalogue
- October 19, 2022
- Versions listed
- 2
- Updates / year
- 0.8
- winget ID
- HydrologicEngineeringCenter.HEC-EFM
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is HEC-EFM free?
HEC-EFM is proprietary (closed-source) software (licence: Proprietary). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is HEC-EFM safe to download?
The download comes from hec.usace.army.mil; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install HEC-EFM with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can HEC-EFM be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does HEC-EFM run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.
Where can I download an older version of HEC-EFM?
The versions page lists all 2 versions with links to their official installer files, back to October 19, 2022.
