The Sheboygan River flows eastward through Sheboygan County, Wisconsin, beginning at the Broughton Sheboygan Marsh and emptying into Lake Michigan at the City of Sheboygan. Covering about 260 square miles, this watershed is the largest and most diverse in the Sheboygan River Basin. The main river stretches approximately 14 miles from Sheboygan Falls Dam downstream to Sheboygan Harbor and Lake Michigan, passing through Sheboygan Falls, the Village of Kohler, and Sheboygan. Three dams (Sheboygan Falls Dam, River Bend Dam, and Waelderhaus Dam) influence water flow and fish passage within this system. Once heavily contaminated with PCBs and PAHs, the river has undergone extensive remediation and restoration efforts as it was designated a Great Lakes Area of Concern in 1987. Today, the Sheboygan River offers diverse fishing opportunities for both resident and migratory species, with varied habitat ranging from fast-flowing shallow areas in upper sections to slow-moving deeper waters in the lower river and harbor.