The Mahoning Watershed covers a land area of approximately 1,420 square miles in northeastern Ohio and western Pennsylvania. The watershed is fed by the Mahoning River and its tributaries, which provide a significant source of drinking water to the surrounding communities. The hydrology of the watershed is influenced by both precipitation and snowmelt, with peak streamflow typically occurring in the spring. The region experiences a humid continental climate, with cold winters and warm summers. Snowpack is a significant component of the hydrology, with the average annual snowfall around 60 inches. The watershed contains several reservoirs, including the Berlin Reservoir and the Milton Reservoir, which provide flood control and recreation opportunities. Unfortunately, the Mahoning watershed has been impacted by pollution from various sources, including agriculture, industry, and urbanization. This has led to degraded water quality and the presence of harmful algal blooms in some areas. Efforts are underway to address these issues and protect the health of the watershed.