The ultimate base level is
A)a drainage divide.
B)a dam.
C)sea level.
D)the base of the Rocky Mountains.
E)a watershed.

Question

Quizplus · Accepted Answer

Sea level is considered to be the ultimate base level because it is the lowest point to which a river can erode and transport sediment. All water ultimately flows towards the sea, and therefore sea level represents the final destination for all water bodies. Drainage divides, dams, and watersheds are all related to the flow of water, but they are not considered to be base levels. The base of the Rocky Mountains is just a geographic feature and is not related to the concept of base level.

The Ultimate Base Level Is