Upper Minnesota

Watershed Hydrology

The Upper Minnesota Watershed (HUC 07020001) covers approximately 6,000 square miles in southwestern Minnesota and northern Iowa. The watershed is part of the larger Mississippi River Basin and is home to many small streams and rivers that ultimately flow into the Minnesota River. Hydrologically, the watershed is characterized by a flat topography and soils that are predominantly clay and loam, which can lead to high rates of runoff during heavy precipitation events. The area receives an average of 25-30 inches of precipitation per year, with most falling as snow in the winter months. Surface water resources in the watershed are primarily used for agriculture, recreation, and wildlife habitat. The watershed contains several man-made reservoirs, including the Lac qui Parle and Big Stone reservoirs, which serve as important sources of drinking water and hydroelectric power. Climatically, the region experiences cold winters and warm summers, with temperatures averaging around 20°F in January and 70°F in July. In recent years, the area has experienced more frequent and intense precipitation events, leading to increased flooding and water quality concerns.


Surface Flows

Upper Minnesota Watershed

Snowpack Depths

Upper Minnesota Watershed

Dams & Reservoirs

Upper Minnesota Watershed

Groundwater Levels

Upper Minnesota Watershed

Upper Minnesota Rivers

Rivers of the Watershed