If the load exceeds a stream's capacity, sediment accumulates in the bed in a process called
A) downcutting.
B) degradation.
C) aggradation.
D) saltation.

Question

Quizplus · Accepted Answer

Aggradation is the process of sediment accumulating in the bed of a stream when the load exceeds the stream's capacity. This can result in deposition and the stream bed becoming elevated over time. Downcutting (A) refers to erosion and the stream bed lowering. Degradation (B) is also erosion but specifically refers to the lowering of the stream channel due to the removal of sediment. Saltation (D) is a process where sediment particles are transported by bouncing or jumping along the stream bed.

If the Load Exceeds a Stream's Capacity, Sediment Accumulates in the Bed