Physiographic provinces of the DC Region
By Volcano Hazards Program
1905 (approx.)
Detailed Description
Map showing the physiographic provinces and selected NPS areas of the National Capital Region. Note the Fall Line—the
boundary between the Piedmont and Coastal Plain provinces. Rock Creek Park is indicated with a red star. Modified from the NPS Center for Urban Ecology Map,courtesy Giselle Mora-Bourgeois (NPS CUE).https://irma.nps.gov/DataStore/DownloadFile/425528