St. Croix County, Wisconsin
SC02
2606900
2.55 - 5.07
2.52
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Assessments during the 2020, 2022, and 2024 listing cycles show total phosphorus levels too high for healthy aquatic communities. Fish surveys show communities were in excellent condition. This water was placed on the Impaired Waters List. This water is covered by a watershed plan: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (2025).Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Impairment Unknown
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
Coldwater - stocked, reproduction
Priority
Low
Designated Use
Coldwater - stocked, reproduction
303(d) ID
2020-098
Listing Date
4/1/2020
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data exceed 2020 WisCALM listing criteria for the Aquatic Life use, however, available biological data do not indicate impairment (i.e. no fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
7/29/2019
Impaired Water Notes
This stream is covered by the following watershed plan and this listing was classified as Category 5W as a result: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (2025).
Date
8/15/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; new total phosphorus sample data exceed 2022 WisCALM listing criteria for the Aquatic Life use.
Date
5/21/2021