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Surface Water, Rivers, and Watersheds
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Physical Science with Earth and Science
9.113 Surface Water, Rivers, and Watersheds
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A city approves many small parking lots across a watershed over ten years. Each project is small, but stream flooding becomes more frequent. Which explanation is best?
A
Small projects can never add up to watershed-scale effects.
B
Parking lots always decrease runoff by storing water in asphalt.
C
Flooding depends only on the name of the watershed.
D
The cumulative increase in impervious surface can raise runoff peaks across the watershed.
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