Great Falls National Park Cascade Blue Sky.jpg
The Potomac River--especially the fifteen mile stretch beginning at Great Falls National Park in Northern Virginia / Maryland--is widely known as "America's wildest urban river." The Potomac River Gorge, made up of Great Falls and Mather Gorge, drops in elevation from one-hundred forty-two feet above sea level down to a mere ten feet above sea level fifteen miles downstream near Georgetown. This steep drop is the result of the harder rock of the Appalachian Piedmont giving way to the softer rock of the Coastal Plain--what is known as the fall line. This particular waterfall can be seen from the first overlook nearest the visitor's center at Great Falls National Park in Fairfax County, Northern Virginia.
- 2012 Mark VanDyke.
- Image Size
- 3791x2516 / 5.4MB
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