This data represents listed impaired rivers and streams for Wisconsin in 2021. [Impaired Waters listings reflect those waters that have been evaluated and determined that they are not meeting state water quality standards. This data is stored and managed in the Water Assessment, Tracking and Electronic Reporting System.]
This is an archived copy of the data held at UW-Madison. For access to the most current data available, please visit: https://data-wi-dnr.opendata.arcgis.com/datasets/303d-impaired-rivers-and-streams-listed?geometry=-104.894%2C41.906%2C-74.571%2C47.372