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Watersheds & basins

Explore watersheds & basins
Search watersheds
Gateway to basins
Explore your waters
Read watershed plans
Wisconsin’s watersheds
Wisconsin River, Photo by Lisa Helmuth

Wisconsin’s abundant waters extend over 330 watersheds and 32 basins. Throughout the state, citizens, schools, businesses, and nonprofits are learning about watersheds and taking action to protect, restore, monitor, and maintain our special resources.

To find out more, contact DNR’s Water quality staff.

About watersheds
Cross Plaines meadow

Over 330 watersheds and 32 basins in Wisconsin.

Interstate basins
Rock River, Jeff Margeneau

Wisconsin is in the Mississippi and Great Lakes Basins.

Watershed, basin GIS data
St. Croix River, Dreux Feldkirchner

Wisconsin has 32 large river basins.

Assessment tools & plans
Assessment Tools and Plans

Watersheds are inventoried, assessed and managed.

Delineating watersheds
Wisconsin River Backwater

Federal delineations help states communicate.

Watershed & water quality
Wisconsin River

Who to contact for water quality and watershed information.

Last revised: Monday June 03 2019