The little watershed (HUC 03110204) has a land area of approximately 122 square miles and is located in western Montana. The hydrology of the area is dominated by the Clark Fork River, which flows through the watershed. Snowpack in the region is typically high, with an average snow water equivalent of approximately 40 inches. Surface water in the watershed includes numerous creeks and streams, as well as several small lakes. Reservoirs in the area are used for irrigation and flood control. Interesting climatic facts and trends in the area include high precipitation levels, with an average annual precipitation of approximately 30 inches, and a trend towards warmer temperatures over the last few decades. These trends are likely to have an impact on the hydrology and ecology of the region, particularly with regard to snowpack and streamflow.