The primary goal of on-site detention is to reduce the peak rate of runoff leaving the site to a level equal to or less than the predevelopment peak rate.

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On-site detention is a stormwater management technique used to control peak runoff rates and volumes from a site. Its primary goal is to reduce the peak rate of runoff leaving the site to a level equal to or less than the predevelopment peak rate. This helps to prevent flooding and erosion downstream, and to protect local water quality.

The Primary Goal of On-Site Detention Is to Reduce the Peak