About this metric

stormwater drainage

Water captured by the stormwater system. Each ecosystem is characterized by a stormwater drainage capacity which describes how much water can be captured.

Stormwater drainage = runoff - runoff after streams

Used to calculate: floodwaters and leaky pipes

Depends upon:

—Parameters: proportion of impervious surface, stormwater drainage capacity and stream drainage capacity

—Other metrics: impervious runoff from hardtops, pervious runoff from soil and runoff into streams

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