Fall Lines

09/09/25

“How do we define the border between an upland region and a coastal plain?”

Upland regions like mountains may give way to coastal plains because of long-term erosion. Fall Lines delineate the border between the mountains and the coastal plains. Rivers traversing fall lines typically turn into rapids or waterfalls because of the sudden change in gradient. One of the most famous fall lines is the Atlantic Seaboard Fall Line.

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