The Milk Headwaters watershed (HUC 10050001) covers a land area of approximately 2,371 square miles in Montana, USA. The hydrology of the watershed is primarily influenced by the Milk River, which flows through the area and provides water to irrigate crops in the surrounding agricultural lands. The watershed is also characterized by its significant snowpack, which provides a vital water source during dry summer months. Surface water in the watershed contains high concentrations of sediment and nutrients due to agricultural activities. The watershed is home to several reservoirs, including Nelson Reservoir, which is known for its abundant fisheries. Interesting climatic facts include the area's cold winters and warm summers, with average annual precipitation ranging from 10 to 20 inches. In recent years, the watershed has experienced longer and more severe droughts, highlighting the importance of sustainable water management practices.