Drainage patterns

Drainage patterns are patterns created by stream, river, or lake erosion over time that reveals characteristics of the kind of rocks and geologic structures in a landscape region drained by the water body. They are governed by the topography of the land, whether a particular region is dominated by hard or soft rocks, and the gradient of the land. (Zernitz 1932)

Sources

Zernitz, Emilie R. "Drainage patterns and their significance." The Journal of Geology 40, no. 6 (1932): 498-521