albert bierstadt anthony of padua carbonate rock contributing property crow wing river dakota dam franklin steele geographic coordinate system geology glacial river warren guthrie theater head of navigation helicopter hennepin island tunnel history of the national register of historic places hydraulic jump hydroelectricity hydropower john pillsbury jonathan carver keeper of the register lakota limestone list of national register of historic places entries list of areas in the united states national park system list of locks and dams of the upper mississippi river louis hennepin mdewakanton meeker island lock and dam mill ruins park minnesota historical society mississippi national river and recreation area mississippi river national park service national register of historic places new england new york niagara falls north star woolen mill northwestern consolidated milling company river warren falls saint anthony main sandstone sawmill sea level sioux southeast steam plant stone arch bridge tainter gate textile mill united states army corps of engineers upper mississippi river waterfall