Vegetative Filter Strip

A vegetative filter strip is a gently sloping landscaped area that provides pretreatment to an adjacent stormwater management facility through sheet flow. The slow runoff rate reduces the risk of erosion and allows for quicker infiltration before the water leaves the site. The vegetative strip adds a visual buffer from impervious areas such as parking lots. The key here is that the runoff must be flowing in the form of sheet flow (not concentrated flow like in a swale or pipe) across the vegetative filter strip in order for this green infrastructure practice to be effective.

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