The Cheboygan watershed (HUC 04070004) is located in the northern part of Michigan’s Lower Peninsula and covers an area of around 3,360 square kilometers. The watershed is characterized by a humid continental climate, with cold winters and moderate precipitation throughout the year. The Cheboygan River is the main hydrological feature of the watershed and is fed by several major tributaries. The river’s flow is heavily influenced by snowmelt and precipitation, particularly during the spring and summer months. Surface water quality in the Cheboygan watershed is generally good, with low levels of pollutants and contaminants. The watershed contains several large reservoirs, including the Black Lake and Mullett Lake. These reservoirs are important recreational areas and provide habitat for a variety of fish species. In recent years, the Cheboygan watershed has experienced significant changes in climate, with increased temperatures and changes in precipitation patterns. These changes have had a noticeable impact on the watershed’s hydrology and ecology, including alterations in snowpack and streamflow dynamics.