Note: You must have ArcGIS 10.8 (Desktop, not Pro) and a valid license (ArcInfo/Advanced).
Most online repositories are outdated or broken. We have secured the setup file that works perfectly with the final release of the ArcGIS 10 series.
Before installing, ensure your system meets these requirements: : Must be fully installed and licensed. download hec geohms for arcgis 108 exclusive
: Once installed, open ArcMap 10.8, right-click on the top toolbar area, and select HEC-GeoHMS from the list to display the tools. Troubleshooting Common Issues
Adjust screen DPI scaling to 100% temporarily. Or set ArcMap.exe high DPI override. Note: You must have ArcGIS 10
: Earlier versions (e.g., for 10.2 or 10.1) can be found in the General Arc Hydro/HECGeoHMS Directory . Installation Prerequisites
The "exclusive" or elusive nature of this download is due to a major shift in software development at the U.S. Army Corps of Engineers: Or set ArcMap
before installing HEC-GeoHMS to ensure full functionality within ArcMap. How to Enable HEC-GeoHMS in ArcMap 10.8 Run the Installer : Execute the downloaded file and follow the installation wizard. Activate Extension : Open ArcMap 10.8, navigate to in the top menu, select Extensions , and ensure the box for HEC-GeoHMS is checked. Display Toolbar : If the toolbar does not appear automatically, go to and select HEC-GeoHMS from the list. Key Features for Version 10.8 Watershed Delineation