The Black Dog Watershed Management Organization (BDWMO) is located in northwestern Dakota County and a portion of northeastern Scott County, Minnesota (See watershed map). The BDWMO contains portions of the cities of Apple Valley, Burnsville, Eagan, and Lakeville. Surface water in the BDWMO ultimately discharges to the Minnesota River.

The BDWMO covers 17,730 acres or 27.7 sq. miles; 70.5% of the watershed lies within the City of Burnsville, 21.2% within the City of Lakeville, and 8% within the City of Apple Valley. The city of Eagan constitutes less than 1% of the Black Dog Watershed Management Organization.