Waukesha County, Wisconsin
FX04
770300
0.00 - 5.99
5.99
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was assessed during the 2018 listing cycle; new total phosphorus and biological (fish Index of Biotic Integrity (IBI) scores) sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use. In 2026 this waterbody was found to have exceeded temperature standards and was placed on the Impaired Waters List. Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
Elevated Water Temperature
Current Use
Supported Aquatic Life
Listing Status
Proposed for List
Attainable Use
Coldwater - natural reproduction
Priority
Low
Designated Use
Coldwater - natural reproduction
303(d) ID
2026-73
Listing Date
4/1/2026