The Geospatial Storm Water Management Model (GeoSWMM) is a dynamic rainfall-runoff simulation model completely integrated with ArcGIS for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas as well as simulation of flow through sewers and open channels.  {{SeeMore}}

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Platform Title Platform Description
ArcGIS 104 Add-in for ArcGIS 10.4, 10.5 Download
ArcGIS 101 - 103 Add-in for ArcGIS 10.1, 10.2, 10.3 Download