The salmon watershed (HUC 18010210) is located in central Idaho and covers approximately 3,100 square miles of land. The watershed is fed by snowmelt from the Sawtooth Mountains and it is home to several important fish species, including Chinook and sockeye salmon. The hydrology of the salmon watershed is heavily influenced by snowpack, which typically accumulates in the winter and melts in the spring and summer months. This snowmelt is a major source of surface water for the watershed and helps to sustain the area's many streams and rivers. In recent years, the salmon watershed has experienced some interesting climatic trends, including a decrease in snowpack and an increase in average temperatures. These changes have led to concerns about the long-term health of the watershed and its fish populations. Additionally, the reservoirs in the area have been found to contain elevated levels of contaminants, which can pose a risk to both human and wildlife health.