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[[File:Community planning.jpg|thumb|A neighbourhood built around and in harmony with existing natural heritage]]
Increases in the quantity, rate, and frequency of runoff can be linked to two root causes:
Increases in the quantity, rate, and frequency of runoff can be linked to two root causes:
#the conversion of undeveloped or agricultural land cover to urban uses, and
#the conversion of undeveloped or agricultural land cover to urban uses, and