The Wisconsin Emissions Reduction Credit (ERC) Registry assists facilities looking for emissions offsets to meet Nonattainment New Source Review (NNSR) permitting requirements. Facilities that voluntarily reduce emissions can use those reductions to…
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 29. During this update, users may see unexpected issues with DNR’s web map viewers. We apologize…
The Wisconsin Department of Natural Resources (DNR) is committed to promoting diversity, fairness, equity and the principles of environmental justice. We also ensure we do not discriminate in our programs, decisions, actions or delivery of services.
Find answers to questions about permitting for activities that may impact navigable waterways below.The DNR Waterways Program regulates activities below the ordinary high water mark of a stream, river, or lake (meaning in-water work), and fill and…
Many drinking water wells in the towns of Warren and Hudson, situated in St. Croix County, are contaminated with trichloroethylene (TCE), a volatile organic compound (VOC). A Special Well Casing Depth Area (St. Croix SWCDA - Towns of Hudson and…
PFAS contamination has been detected throughout Dane County in soil, municipal wells, private wells, surface water and groundwater.Subscribe to updates about PFAS contamination in Wisconsin.Submit a question, comment or concern about PFAS in Dane…
The DNR works closely with the Department of Health Services (DHS) to issue consumption advisories for per- and polyfluoroalkyl substances (PFAS) where and when necessary. Fish consumption advisories are based on guidance from the Great Lakes…
The Wisconsin Department of Natural Resources (DNR) Aquatic Invasive Species Monitoring program is a collaboration of citizens, partners and the DNR to find, report, map and survey invasive species. The program is guided by species identified in NR…
The Wisconsin Geographic Names Council (WGNC) is a state council established to maintain uniform geographic name usage throughout Wisconsin. The WGNC comprises representatives of state agencies most concerned with geographic information. Sharing its…
Beach Closings and Advisories MapBeach Advisory ReportsIn order to alert the public about potentially unhealthy water quality conditions at Great Lakes beaches, local health departments sometimes post swimming advisories. Depending on the severity…