The Middle Allegheny Redbank Watershed covers approximately 2,880 square miles in western Pennsylvania. The watershed is primarily composed of forested land and agricultural fields, with surface water resources including the Allegheny River and several smaller creeks and streams. The watershed receives an average of 43 inches of precipitation annually, with summer thunderstorms being the primary contributor. Snowpack varies depending on elevation, with higher elevations receiving more snowfall. The major reservoir in the watershed is the Allegheny Reservoir, which is used for flood control, recreation, and drinking water supply. The reservoir's primary constituents include sediment, nutrients, and dissolved oxygen. Interesting climatic trends include an increase in average annual temperature and a decrease in annual snowfall over the past few decades. These changes may impact the timing and amount of streamflow, as well as the overall health of the watershed's aquatic ecosystems.