The Smith watershed (HUC 10030103) is located in northwest Montana and covers a land area of approximately 1,260 square miles. The hydrology of the watershed is primarily influenced by snowmelt, with the majority of precipitation falling as snow during the winter months. The snowpack typically accumulates from December to March, and the majority of snowmelt occurs in May and June. Surface water in the watershed is dominated by the Smith River, which provides important habitat for various species of fish including trout and salmon. In addition, the watershed contains several reservoirs including the Canyon Ferry Reservoir, which is used for hydroelectric power generation and irrigation purposes. Interesting climatic facts include the high variability in precipitation and temperature, with average annual precipitation ranging from 10 to 30 inches and average annual temperatures ranging from 20 to 70 degrees Fahrenheit. Recent trends include increasing temperatures and changes in precipitation patterns, which could impact hydrology and ecosystem health in the watershed.