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Potomac
Case study
Potomac River Basin
Thelin and Pike 1991, USGS Map I-2206
Potomac Basin - 1905
Rivers of North America: A Reading Lesson for Students of Geography and Geology, by Israel C. Russell, New York, G.P.Putnam’s Sons London, John Murray 1905
Hancock, Washington County, MD
Map – Microsoft MapPoint
Westernport MD
Map – Microsoft MapPoint
Alexandria VA
Map – Microsoft MapPoint
Loudoun County VA
Map – Microsoft MapPoint
Shenandoah and Rockingham Counties VA
Map – Microsoft MapPoint
Prince Williams County VA
Map – Microsoft MapPoint
http://www.potomacriver.org/
http://www.fergusonfoundation.org/cleanupfacts.html
Watershed photo
Scarps (Issues map)
Bay Crater
Subsidence
Rivers - Crater
Low Sea Level