What happens to rivers when they reach their base level?
A) Their discharge decreases.
B) They erode sediment.
C) They fill the bottom of a v-shaped valley.
D) They often form alluvial fans or deltas.

Question

Quizplus · Accepted Answer

When rivers reach their base level, the lowest point to which they can erode, they lose the energy needed to carry sediment. This causes the sediment to be deposited, often forming alluvial fans or deltas.

What Happens to Rivers When They Reach Their Base Level