The Lower Wisconsin River basin drains approximately 4,940 square miles of south-central and southwestern Wisconsin. The basin includes the Wisconsin River from the Castle Rock Flowage dam to its confluence with the Mississippi River near Prairie du…
The Rock River basin covers over 3,700 square miles and is located in the south-central part of Wisconsin. The basin's natural resources are the legacy of the last period of Wisconsin glaciation. Many Native American tribal peoples lived here…
The Lower Fox River basin is located in northeastern Wisconsin and encompasses the following counties: Brown, Calumet, Outagamie and Winnebago. The 638 square mile (1,654 square kilometers) drainage basin is bordered by the Twin Door Kewaunee basin…
Downstream from Eau Claire on the Chippewa River and downstream from Menomonie on the Red Cedar contains more rare species (125) and more native prairie (25% of the state total) than any area of comparable size in Wisconsin. These unique natural…
The Lakeshore basin is a water-rich area sprinkled with an assortment of inland lakes, major rivers and small streams and bounded by the waters of Green Bay and Lake Michigan. The basin completely encompasses the counties of Door, Kewaunee and…
The Grant-Platte/Sugar-Pecatonica basins are located in the southwest corner of the state and are divided into the Grant and Platte River basins, which flow directly into the Mississippi and the Sugar-Pecatonica basin, which join in Illinois and…
The Black River discharges into Pool 7 of the Mississippi River. Within the Wisconsin DNR, the Mississippi - Lower St. Croix Team addresses river issues. Three federal agencies also conduct management and monitoring activities in the river: U.S.…
The Black River basin encompasses approximately 2,400 square miles, contains 13 watersheds and includes portions of seven counties. Two distinct topographic regions determine the flow characteristics of the tributary streams. The upper and middle…
Wisconsin's largest river systems form 24 drainage basins. Click on the map or drop-down box below to navigate to your basin of interest.
When structures are dismantled or demolished and disposed of, there is the potential for negative environmental impacts, particularly on wildlife and groundwater. Asbestos, lead, mercury and other hazardous substances in structures could harm human…