The Detroit District, established in 1841 covers 82,000 square miles of land inhabited by about 14 million people and has 4,000 miles of Great Lakes shoreline. The Districts major mission is to investigate, plan, design, construct, operate and maintain Congressionally authorized water resource projects related to navigation, flood control, beach erosion and other activities. The District operates and maintains the World Famous Soo Locks, plus 102 harbors on Lakes Superior, Michigan, Huron, St.Clair and the State of Michigan portion of Lake Erie. The Detroit District manages the Great Lakes Water Control Data System, making it the Corps center for hydrometeorologic and water level data collection and dissemination for the Great Lakes system