With urbanization of the upstream drainage area,what changes can be expected in the height of the 100-year flood?
A) a lower height, since the water runs through faster
B) a greater height
C) the time at highest level will be longer
D) the downstream extent of the highest level will be less
E) no change; the flood level only depends on the total rainfall upstream

Question

Quizplus · Accepted Answer

Urbanization typically increases the amount of impervious surfaces, such as pavement and buildings, which can lead to a reduction in infiltration and an increase in runoff. This can result in higher peak flows and therefore a greater height of the 100-year flood.

With Urbanization of the Upstream Drainage Area,what Changes Can Be