Impaired Water - Windigo Lake (Windigo Lake (Bass))
Sawyer County, Wisconsin
UC20
2046600
503.17
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Placed on the 303(d) impaired waters list due to mercury in 1998.

This water was assessed during the 2014 listing cycle; total phosphorus sample data clearly met 2014 WisCALM listing thresholds for the Recreation use, total phosphorus and chlorophyll sample data clearly met 2014 WisCALM listing thresholds for the Fish and Aquatic Life use.

This water was assessed during the 2016 listing cycle; total phosphorus sample data were clearly below 2016 WisCALM listing thresholds for Recreation use and Fish and Aquatic Life use. Chlorophyll sample data were clearly below FAL use listing thresholds and did not exceed REC listing thresholds.

This water was assessed during the 2018 listing cycle; new total phosphorus sample data were clearly below 2018 WisCALM listing thresholds for the Recreation use and the Fish and Aquatic Life use. New chlorophyll sample data were clearly below the Fish and Aquatic Life use.

Assessments of new total phosphorus data during the 2020 listing cycle confirm good condition of Aquatic Life and Recreation uses; chlorophyll data were appropriate for Aquatic Life use, but were too high for Recreation use standards.
Listing Details
Pollutant
Mercury
Listed For
Fish Consumption
Impairments
Mercury Contaminated Fish Tissue
Current Use
Specific Restricted Fish Consumption
Listing Status
303d Listed
Attainable Use
Unrestricted Fish Consumption
Priority
Low
Designated Use
Unrestricted Fish Consumption
303(d) ID
521
Listing Date
4/1/1998