Consider a stream that begins at 1000 m elevation in the mountains and flows to sea level over a distance of 500 km.What is its base level?
A) 0 m
B) 100 m
C) 250 m
D) 500 m
E) 1000 m

Question

Quizplus · Accepted Answer

Base level is the lowest point to which a stream can erode its channel. In this case, the stream flows from 1000 m elevation to sea level, which means sea level is the base level for this stream. Therefore, the base level is 0 m.

Consider a Stream That Begins at 1000 M Elevation in the Mountains