Fall Line
Fall Line [' fɔ: Iain l ] is a geomorphologic unconformity between the hard rock in the Piedmont and the softer soil layers in the coastal plain on the east coast of the United States. East of this running at the edge of the Appalachian Mountains about 1500 km long border line is the erosion of effective, so that the level of the terrain lies deeper. In the rivers, this leads to a larger gap within a few kilometers. This creates waterfalls and rapids, making the Fall Line usually marks the end of river navigation.
Cities on the Fall Line
Along the Fall Line, including the following cities ( in alphabetic order ):
- Augusta, Georgia at the Savannah River
- Baltimore, Maryland on the Patapsco River
- Camden, South Carolina on Wateree River
- Cheraw, South Carolina, Pee Dee River
- Columbia, South Carolina on the Congaree River
- Columbus, Georgia on the Chattahoochee River
- Conowingo, Maryland on the Susquehanna River
- Fredericksburg, Virginia on the Rappahannock River
- Laurel, Maryland on the Patuxent River
- Macon, Georgia on Ocmulgee River
- Milledgeville, Georgia on Oconee River
- New Brunswick, New Jersey on the Raritan River
- Occoquan, Virginia Occoquan River on
- Petersburg, Virginia on the Appomattox River
- Philadelphia, Pennsylvania on the Schuylkill River
- Richmond, Virginia on the James River
- Roanoke Rapids, North Carolina on Roanoke River
- Smithfield, North Carolina on the Neuse River
- Trenton, New Jersey on the Delaware River
- Tuscaloosa, Alabama on Black Warrior River
- Washington, DC / Georgetown / Alexandria, Virginia on the Potomac River
- Wetumpka, Alabama on the Coosa River
- Wilmington, Delaware on the Brandywine Creek