Surface Water
- Webpage
Water Condition Lists
Every two years, Sections 303(d) and 305(b) of the Clean Water Act (CWA) require states to publish a list of all waters not meeting water quality standards and an overall report on surface water quality status of all waters in the state. To comply…
- Webpage
PFAS Surface Water Criteria
As part of the effort to protect surface water and public health across Wisconsin, the DNR is working with key public and industry stakeholders, state agencies, the state Legislature, the governor and the general public to update several chapters in…
- Webpage
Water Condition Viewer
In order to keep DNR servers up to date, DNR will be patching the GIS servers to the latest service level on the morning of Sunday, March 3. During this update, users may see unexpected issues with DNR’s web map viewers. We apologize in advance for…
- Webpage
Surface Water Designated Uses
Assessing the health of a waterbody starts with determining what types of activities the water should support, also commonly referred to as a waterbody's "Designated Uses." Under the Clean Water Act, Wisconsin waters are each assigned four "uses"…
- Webpage
Surface Water Data Viewer
- Webpage
Water Quality Standards and Classifications
Water quality standards are important because they help water quality managers protect and restore the quality of Wisconsin's waters. Our water quality may be impacted by many different sources and types of pollution. Under the Clean Water Act,…
- Webpage
Areawide Water Quality Management Plan (AWQMP) Program
Water quality planning in Wisconsin occurs on many levels in many agencies. Each plan begins with monitoring to evaluate the health of Wisconsin's waters. Biologists and trained volunteers collect monitoring data on representative segments on rivers…
- Webpage
Outstanding and Exceptional Resource Waters
Wisconsin has designated many of the state's highest quality waters as Outstanding Resource Waters (ORWs) or Exceptional Resource Waters (ERWs). Waters designated as ORW or ERW are surface waters that provide outstanding recreational opportunities,…