Wisconsin surface waters

Wisconsin surface waters
Atlas & Webinars
Wisconsin’s abundant waters
South Branch Eau Claire River

Wisconsin is water rich, with thousands of streams stretching nearly 84,000 miles, inland lakes that span more than 1 million acres, 1,000 miles of Great Lakes shoreline and more than five million wetland acres. Beneath this surface water bounty lies an equally rich supply of groundwater.

Yet, these resources are fragile, at risk from pollution, over-development, runoff, invasive species and more. The WDNR is dedicated to protecting, assessing and restoring surface water and groundwater in the state.

New and Pending Webpage Updates

Note our pending and most recent webpage updates: Nutrient Reduction Strategy, Adaptive Management, Water Quality Trading, Thermal Rules Update, and Phosphorus Rule Updates.

Last revised: Thursday October 17 2013