The Upper Black Watershed (HUC 11010007) covers an area of approximately 2,112 square miles and is located in the northeastern region of the United States. The watershed consists of various streams and creeks that drain into the Upper Connecticut River. Hydrologically, the watershed is characterized by a mix of forested and agricultural land, with a moderate level of impervious surfaces. The watershed is subject to seasonal snowpack, with peak snow accumulation occurring in January through March. The snowpack plays a crucial role in the watershed by regulating streamflow and providing a consistent source of surface water during the warmer months. Reservoirs in the watershed are primarily used for drinking water supply and are regularly monitored for potential contaminants. In recent years, the watershed has experienced increased precipitation and warmer temperatures, leading to changes in the timing and magnitude of streamflow.