Conveyance best management practices

These best management practices redirect runoff from impervious surfaces to a pretreatment/treatment best management practice.

Impervious diversion
	Subsurface Flow Diverter Description of practice » Trench drain (metal grate: trench former, slotted vane drain) illustrations

	Surficial Flow Diverter Description of practice » Valley gutter with shallow concave shape (concrete) illustrations

	Water diversion bump with shallow convex shape (asphalt) illustrations
Photo: Anoka County Conservation District
	Curb cut inlet illustrations
Photo: Dakota County Soil and Water Conservation District
Vegetated swale
	Description of practice » This best management practice is used primarily for flow rate control but can also be designed to remove pollutants; it is a gradually sloped, shallow, flat-bottom ditch with check dams. illustrations
Photo: Whatcom County, State of Washington

Impervious diversion