The Des Lacs watershed (HUC 09010002) covers an area of approximately 2,586 square miles in North Dakota and Montana. The hydrology of the watershed is characterized by the Des Lacs River, which flows through the area and is fed by several smaller tributaries. The watershed receives an average of 20 inches of precipitation annually, with snowfall accounting for a significant portion of the total. The snowpack in the watershed is generally shallow, with a maximum depth of around 30 inches. Surface water in the watershed is used for irrigation and municipal water supply. The watershed also contains several reservoirs, including the Lake Darling Reservoir and the Des Lacs National Wildlife Refuge. Interesting climatic facts include the cold winters and relatively dry summers, with temperatures ranging from -30°F to 100°F and an average annual temperature of around 40°F. Trends in the watershed include increased water usage for agriculture and urbanization, which may have implications for future water management.