A line roughly along Interstate 95 joining areas of relatively steep gradient on several rivers on Maryland's western shore. The line marks the geographical area where each river descends from the hilly Piedmont to the flat and sandy Coastal Plain. It also marks the limit of upstream commercial navigation.
A line connecting the waterfalls of nearly parallel rivers that marks a drop in land level.
A line joining the waterfalls on several rivers that marks the point where each river descends from the upland to the lowland and marks the limit of navigability of each river.
The physiographic border between the piedmont and coastal plain regions. The name derives from the river rapids and falls that occur as the water flows from hard rocks of the higher piedmont onto the softer rocks of the coastal plain.
the boundary between the Piedmont and Coastal Plain Physiographic Provinces in the Eastern United States. In the area near this boundary, there is a relatively large change in elevation, resulting in waterfalls or rapids in streams or rivers flowing east, thus the name "Fall Line". This line roughly coincides with the area between the tidal and non-tidal parts of each river.
A point at which a river makes a sudden drop. A notable example is found in the eastern United States from New York to Alabama in the zone where the major rivers descend from the Appalachian foothills to the Atlantic coastal plain. Here, the fall line is marked by such cities as Trenton, N.J., Philadelphia, Pa., Baltimore, Md., Washington, D.C., Richmond, Va., Raleigh, N.C., Columbia, S.C., and Macon, Ga.
the boundary between the piedmont and the coastal plain where water falls often occur and where cities (Baltimore, Washington, Fredericksburg, Richmond) are sometimes located.
The imaginary line that marks the sharp upward slope of land along a coastal plain's inland edge where waterfalls and rapids occur as rivers cross the zone from harder to softer rocks.
a line that marks the end of layers of hard rock, such as the edge of a plateau or piedmont, and the beginning of a softer rock layer, such as that of a plain. There are many waterfalls and rapids along the fall line. [AHDOS
In geomorphology, a fall line marks the area where an upland region (continental bedrock) and a coastal plain (coastal alluvia) meet. A fall line is typically prominent when crossed by a river, for there will often be rapids or waterfalls. Because of these features river boats typically cannot travel any farther inland without portaging unless locks are built.
