The Manitowoc Sheboygan watershed (HUC 04030101) is located in eastern Wisconsin and covers an area of approximately 1,542 square miles. The hydrology of the watershed is dominated by the Sheboygan River, which flows into Lake Michigan. The region experiences a humid continental climate, with warm summers and cold winters. The area receives an average of 52 inches of snowfall per year, which can contribute to the snowpack in the winter months. Surface water quality in the watershed is influenced by agricultural practices, urban development, and wastewater treatment plants. There are several reservoirs in the watershed, including the Plymouth Mill Pond and the Sheboygan Falls Dam. Interesting climatic trends in the region include an increase in average annual temperatures and more frequent heavy precipitation events. Efforts to improve water quality in the watershed include implementation of best management practices on farms and restoration of wetlands and other natural areas.