The Drinking Water State Revolving Fund provides set-aside funds for the development of watershed plans to address surface water pollutants impacting source water for drinking water systems. A watershed plan can enhance or augment a source water protection (SWP) plan in that it encompasses the entire watershed that impacts the supply source, as well as the delineated source water protection area. Once a watershed plan is in place, it becomes the guidance and framework for any water quality improvement activities in that watershed.

SCDES's Watershed Atlas has multiple data layers and functions, and is mobile-ready. Users can add data, create layers from selected features, export attribute data, view watershed information at their current location, save their sessions, and restore sessions again later.