Where likely sources of debris flows are a short distance upstream and the channel gradient is high, ____.

Question

Quizplus · Accepted Answer

In scenarios where the source of debris flows is close and the channel gradient is steep, the time between the initiation of a debris flow and its impact on downstream areas can be very short. This short warning time may not be sufficient to facilitate evacuation or other preparatory actions, increasing the risk to human life and property.

Where Likely Sources of Debris Flows Are a Short Distance