Monona-Harrison Ditch

Watershed Hydrology

The Monona-Harrison Ditch Watershed (HUC 10230004) covers approximately 92,000 acres in southwest Wisconsin. The area is characterized by rolling hills, cropland, pastureland, and some forested areas. Hydrologically, the watershed is part of the Upper Mississippi River Basin and is drained by several creeks and streams that ultimately flow into the Mississippi River. The region experiences long, cold winters with significant snowfall. The snowpack in the watershed is an important source of water for surface water bodies and groundwater recharge in the spring. The surface water in the watershed is dominated by agricultural drainage, and there are several small reservoirs that store water for irrigation during dry periods. The area is also vulnerable to flooding, with several major flood events occurring in recent history. Climate trends in the region suggest an increase in precipitation and more extreme weather events, which could have significant impacts on the watershed in the future.


Surface Flows

Monona-Harrison Ditch Watershed

Snowpack Depths

Monona-Harrison Ditch Watershed

Dams & Reservoirs

Monona-Harrison Ditch Watershed

Groundwater Levels

Monona-Harrison Ditch Watershed

Monona-Harrison Ditch Rivers

Rivers of the Watershed