The concept of detention and retention,facility types and application are introduced,and the design principle and criterion of detention and retention facilities with different control objectives are expounded to provide a reference for the rational design of detention and retention facilities according to different control objects in urban stormwater management.

Determination of re-storage times of rainwater storage facilities in Xinyi hill area

The principal effect of Chengdu Road stormwater retention tank is to intercept and store the initial stormwater from the service area of Chengdu Road so as to reduce the river discharge volume and load of pump station during heavy rainfall.