This is the for HEC‑GeoHMS 10.8.
HEC-GeoHMS extension for ArcGIS 10.8 can be downloaded directly from the Esri ArcHydro archive community.esri.com While the official HEC-GeoHMS website download hec geohms for arcgis 108 exclusive
Which exact are you running (e.g., 10.8, 10.8.1, or 10.8.2)? This is the for HEC‑GeoHMS 10
If the tools do not appear, open the window, right-click the main ArcToolbox folder, select Add Toolbox , and navigate to your installation directory (usually C:\Program Files (x86)\HEC\HEC-GeoHMS ) to manually load the .tbx file. Troubleshooting Common Issues open the window
"Download HEC-GeoHMS for ArcGIS 10.8: A Comprehensive Guide"
Once successfully downloaded and installed, your workflow generally follows a specific, linear sequence of operations within ArcMap: