https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1249495#M4293 <P>The most stable one I've used so far is ArcMap 10.2, and i think it is the last officially supported one.</P> Thu, 19 Jan 2023 15:41:40 GMT alienYouth 2023-01-19T15:41:40Z https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1233679#M4277 <P>I would like to know which version of ArcGIS/ArcMap I need so that I can install the HEC-GeoHMS extension..? Is the latest version of ArcMap 10.8 applicable or do I need earlier versions..?</P> Mon, 21 Nov 2022 09:40:59 GMT https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1233679#M4277 SambulisiweMaseko 2022-11-21T09:40:59Z https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1242762#M4284 <P>I think you should be able to get the HEC-GeoHMS extension for 10.8 at the link below. Extensions are available for earlier versions of ArcGIS for Desktop.</P><P>v10.8:&nbsp;<A href="https://downloads.esri.com/archydro/HECGeoHMS/Setup10_8/" target="_blank">https://downloads.esri.com/archydro/HECGeoHMS/Setup10_8/</A></P><P>Other versions of Desktop:&nbsp;<A href="https://downloads.esri.com/archydro/HECGeoHMS/" target="_blank">https://downloads.esri.com/archydro/HECGeoHMS/</A></P> Tue, 20 Dec 2022 18:53:34 GMT https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1242762#M4284 jrefolo 2022-12-20T18:53:34Z https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1249495#M4293 <P>The most stable one I've used so far is ArcMap 10.2, and i think it is the last officially supported one.</P> Thu, 19 Jan 2023 15:41:40 GMT https://community.esri.com/t5/water-resources-questions/runoff-estimation-using-hec-geo-hms-and-arcgis/m-p/1249495#M4293 alienYouth 2023-01-19T15:41:40Z