WaterNAM has been developed as an add-in or extension to ArcGIS® 10.x. Desktop system requirements for ArcGIS® 10.x are available on the ArcGIS® resources web-link at: http://help.arcgis.com/en/systemrequirements/index.html#//015100000002000000
A user must have ArcGIS® 10.x installed on their computer prior to the installation of WaterNAM. WaterNAM is available for download from the product page of Streams Tech, Inc.: https://streamstech.com/Products/WaterNAM
Detailed instructions on software download, installation, activation and upgrade are available for registered users on their My Products page.