Online Maps, Publications & Resources

Online Water Maps Gallery  NEW 
The Online Water Maps Gallery provides “self-serve” maps of Chester County streams and related water resources information. Both PDF maps and interactive map tools (no special software or plugins required) are provided.

PDF maps display county-wide information for viewing and downloading.

Interactive maps allow users to zoom in/out and search to view a desired location/area, with single-layer viewing (tabbed format) or multi-layer viewing (web map format). Chester County’s streams and lakes, watersheds, protected water uses, impairments/pollutants (2014), FEMA floodplains, soils, Urbanized Areas (2000 and 2010), etc. can be viewed.

The GIS Data Files Directory provides access to available GIS files for downloading.

  • PDF Maps
  • Interactive Maps 
    (note - for full functionality, Internet Explorer 9 or above, Chrome or Firefox browser is required)
  • GIS Data Files Directory

Chambers Lake (Courtesy of Michael Lawrence)

PA Act 167 Stormwater Management Plans
List of Watershed Plans Completed for Waters/Watersheds Within Chester County  NEW

List of Plans Completed for Waters/Watersheds in Chester County has been compiled. These plans and studies were conducted by various entities and agencies, some plans dating as far back as 1968. The type of plans included range from water resources inventory studies to restoration plans to watershed conservation plans. The list does not include scientific research studies that occurred in Chester County's watersheds. A sampling of some of this local research conducted by USGS can be found here.

Watersheds Plan Planning Series
Watersheds Plan:
Public Education Brochures Ponds and Rain Garden Resources
Chester County/USGS Cooperative Studies Additional Publications