What are the contents of hydrological control indicators for urban flood protection?

Water environment protection control indicators. Urbanization has a great impact on the water environment. Urban stormwater control in residential areas focuses on the control of runoff peaks, while the main indicators of urban water environment control are to control the total volume and water quality. . The rainfall infiltration control index is aimed at a series of problems caused by the increase of urban impermeable ground to block rainwater from the lower layer. The purpose of the precipitation infiltration control index is to supplement the protection of rivers and lakes wetlands and support aquatic ecosystems.

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