Polk County, Wisconsin
SC06
2628800
115.75
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
White Ash Lake was evaluated for phosphorus and algae every two years between 2014 and 2024. Phosphorus levels were found to be too high. This lake is covered by a restoration plan: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (expires 2025).Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Impairment Unknown
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2014-294
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2018 listing cycle; total phosphorus sample data exceed 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however chlorophyll data do not exceed REC or FAL thresholds.
Date
7/11/2017
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data exceed 2014 WisCALM listing thresholds for the Recreation use, however, chlorophyll data do not exceed REC thresholds . Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds.
Date
1/15/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 WisCALM listing thresholds for the Recreation use, however, chlorophyll data do not exceed REC thresholds. Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds.
Date
10/12/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus sample data clearly exceeded 2020 WisCALM listing thresholds for the Recreation use and Aquatic Life use, however chlorophyll data were below REC and AL thresholds. This lake is covered by a restoration plan: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (2025).
Date
7/24/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; total phosphorus sample data clearly exceeded 2022 WisCALM listing thresholds for the Recreation use and Aquatic Life use, however chlorophyll data were below REC and AL thresholds.
Date
5/25/2021