1. Map showing the difference between the potentiometric surfaces of the Magothy aquifer of September 1975 and September 1982 in Southern Maryland Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
2. Map showing the potentiometric surface of the Magothy aquifer in Southern Maryland, September 1982 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : United States Department of the Interior, Geological Survey, 1982 Resource Type: Map Access & Availability: Loading
3. Map showing the potentiometric surface of the Magothy aquifer in Southern Maryland, September 1983 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Towson, Md.] : United States Department of the Interior, Geological Survey, 1985 Resource Type: Map Access & Availability: Loading