When a dam and reservoir are constructed,the natural response of the river and its channel gradient come under the control of which of the following?
A)The same base level that existed prior to construction.
B)A local,or temporary,base level.
C)The government.
D)An ultimate base level.

Question

Quizplus · Accepted Answer

When a dam and reservoir are constructed, a local or temporary base level controls the natural response of the river and its channel gradient. This is because the construction of a dam creates an artificial lake, which serves as a new base level for the river. However, this base level is not permanent, as it can change based on the level of water in the reservoir. As a result, the natural response of the river and its channel gradient may also change.

When a Dam and Reservoir Are Constructed,the Natural Response of the River