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The Atlantic Seaboard Fall Line, or Fall Zone, is a 900-mile (1,400 km) escarpment where the Piedmont and Atlantic coastal plain meet in the eastern United States. [2] Much of the Atlantic Seaboard fall line passes through areas where no evidence of faulting is present. The fall line marks the geologic boundary of hard metamorphosed terrain ...
A fall line (or fall zone) is the area where an upland region and a coastal plain meet and is noticeable especially where rivers cross it, with resulting rapids or waterfalls. The uplands are relatively hard crystalline basement rock, and the coastal plain is softer sedimentary rock. [1] A fall line often will recede upstream as a river cuts ...
[7] [8] The larger rivers cross the Atlantic seaboard fall line. Over time, many large cities emerged where these rivers cross the fall line as watermills allowed for the production of material goods. Colonial-era logging, farming, and later construction of mill dams have altered streams and trapped mud in much of the Chesapeake Bay watershed.
The James River is a river in Virginia that begins in the Appalachian Mountains and flows from the confluence of the Cowpasture and Jackson Rivers in Botetourt County 348 miles (560 km) [3] to the Chesapeake Bay. [4] The river length extends to 444 miles (715 km) if the Jackson River is included, the longer of its two headwaters. [3]
The Rappahannock River is a river in eastern Virginia, in the United States, [2] approximately 195 miles (314 km) in length. [3] It traverses the entire northern part of the state, from the Blue Ridge Mountains in the west where it rises, across the Piedmont to the Fall Line, and onward through the coastal plain to flow into the Chesapeake Bay, south of the Potomac River.
In Maryland the Tidewater area is the flooded river areas below the Fall Line. The Hampton Roads area of Virginia is considered to be a Tidewater region. Southern Maryland [ 4 ] and the Eastern Shore , parts of Delaware round out the northern part of the region on the Chesapeake and Delaware Bays.
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Added to NRHP. March 29, 1995. Designated VLR. January 15, 1995 [2] Falling Creek Ironworks was the first iron production facility in North America. It was established by the Virginia Company of London in Henrico Cittie (sic) on Falling Creek near its confluence with the James River. It was short-lived due to an attack by Native Americans in 1622.