GCD 7 Status with ArcPro vs. ArcMap

GCD has not received any development or funding since 2018.  The GCD 7 AddIn to ArcMap 10.x still works well, but many organizations and ESRI are rapidly deprecating or excluding access to ArcMap in favor of ArcPro.  The GCD Stand Alone still works for doing GCD analyses on Windows OS and has always been faster than the AddIn as it is a 64 bit application.  For those wishing to continue to do GCD analyses, we recommend the GCD Stand Alone. The map based results can be viewed in Arc Pro (or indeed any desktop GIS), but you will need to manually apply symbology (note you could save layer files from GCD 7 AddIn to ArcMap and update as needed as a starting point).

Unfortunately, we have no current plans to refactor the GCD AddIn to ArcPro. If we get financial support for development, we would likely refactor the GCD-Core to an extendible Python code base so that researchers can run it and deploy it in various ways. We might also move to cloud base computing for GCD (either through CodeSpaces or as a web service). We may at some point deploy a GCD user interface from the web or our new Riverscapes Studio, QRiS plugin in QGIS. If we refactor GCD, we will make sure it writes full riverscapes projects discoverable in the Data Exchange and ready for display in our new Viewers (an ArcPro Viewer is forthcoming this summer 2024).