Lake Harney, named for General William S. Harney, is a lake that straddles the county line between Volusia County and Seminole County, Florida, at the coordinates latitude 28°45’21.404", longitude 81° 03’36.019". It is fed by the Saint Johns River which flows through central Florida and feeds many of the nearby lakes such as Lake Monroe.
Location: Volusia and Seminole Counties, Florida
Primary inflows: St. Johns River, Black Cypress Swamp
Primary outflows: St. Johns River
Basin countries: United States
Managing agency: St. Johns River Water Management District