Background

The Potomac river watershed is approximately 37,955 km^2 of which 29,240 km^2 is above the fall line that separates the Piedmont region from the costal plain in the watershed, and is the physiological marker between the upper an lower shed areas.  For the Potomac River the Great Falls area of the river that runs between Virginia and Maryland represents where the fall line crosses the watershed. (Virginiaplaces.org, 2016)

Currently approximately 59% of the watershed is classified as forested, which leaves opportunity for conservation of the landscape to augment any proposed water quality and quantity measures that can be implemented in developed areas of the watershed to protect the water resource. (ICPRB, 2016)

Refrences

Virginia Places.org, (2016) Geology of the Fall Line, Accessed from http://www.virginiaplaces.org/regions/fallshape.html

Interstate Commission on the Potomac River Basin (ICPRB), (2016), Potomac River Facts, ICRB, Accessed from:

https://www.potomacriver.org/potomac-basin-facts/