How do drains help to prevent landslides?
A) Drains keep water at the surface, so that only the upper part of the slope is saturated.
B) Drains divert water away from the slope.
C) Drains pull water deeper into the base of the slope.
D) Drains anchor the soil to the ground keeping it from sliding.
E) Drains do not prevent landslides.

Question

Quizplus · Accepted Answer

Drains help to prevent landslides by diverting water away from the slope, reducing the amount of water that saturates the slope and decreases the risk of landslide.

How Do Drains Help to Prevent Landslides