Watersheds_Content Page_Lake Superior Basin

Lake Superior Basin

Clear, cold and deep, Lake Superior - the largest expanse of freshwater in the world - forms Wisconsin's north coast. The Wisconsin Department of Natural Resources in the Lake Superior basin provides this site about fisheries, forests, wildlife, pollution prevention, watershed protection, tributaries, environmental protection and regulation, invasive aquatic species, recreation and special programs.

Cleanest of the Great Lakes, the Lake Superior ecosystem faces threats from toxic pollution, tributary erosion, contaminated sediments, habitat loss and degradation and exotic species. The governors of Wisconsin, Michigan and Minnesota signed the Binational Program to Protect and Restore the Lake Superior basin in 1991.

Water Resource Information For Specific Watersheds

Watershed Name/View DetailsWatershed Code/MapWatershed SizeLists (Streams, Lakes, Bays & Harbors)CountiesWater Management Unit (WMU)Major Drainage System
Amnicon and Middle RiversLS03288.92 mi 2LS03 Water listsDouglasLake SuperiorLake Superior
Bayfield Peninsula NorthwestLS06236.05 mi 2LS06 Water listsBayfieldLake SuperiorLake Superior
Bayfield Peninsula SoutheastLS07301.48 mi 2LS07 Water listsAshland, BayfieldLake SuperiorLake Superior
Black and Upper Nemadji RiverLS02125.62 mi 2LS02 Water listsDouglasLake SuperiorLake Superior
Bois Brule RiverLS04199.64 mi 2LS04 Water listsDouglas, BayfieldLake SuperiorLake Superior
Fish CreekLS08156.55 mi 2LS08 Water listsAshland, BayfieldLake SuperiorLake Superior
Iron RiverLS05213.39 mi 2LS05 Water listsDouglas, BayfieldLake SuperiorLake Superior
Lower Bad RiverLS09123.92 mi 2LS09 Water listsAshland, Iron, BayfieldLake SuperiorLake Superior
Marengo RiverLS12217.53 mi 2LS12 Water listsAshland, BayfieldLake SuperiorLake Superior
Montreal RiverLS15226.26 mi 2LS15 Water listsAshland, Iron, VilasLake SuperiorLake Superior
Potato RiverLS11139.92 mi 2LS11 Water listsAshland, IronLake SuperiorLake Superior
Presque Isle RiverLS16108.05 mi 2LS16 Water listsVilasLake SuperiorLake Superior
St. Louis and Lower Nemadji RiverLS01159.67 mi 2LS01 Water listsDouglasLake SuperiorLake Superior
Tyler ForksLS1378.76 mi 2LS13 Water listsAshland, IronLake SuperiorLake Superior
Upper Bad RiverLS14134.68 mi 2LS14 Water listsAshland, IronLake SuperiorLake Superior
White RiverLS10366.15 mi 2LS10 Water listsAshland, BayfieldLake SuperiorLake Superior

Watershed Map