Taylor County, Wisconsin
LC20
2160700
2,366.31
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Chequamegon Waters Flowage was on the 303(d) list due to mercury from 1998 - 2018. This lake was evaluated for phosphorus and algae every two years between 2016 and 2024. Phosphorus levels were found to be too high, which was reflected in algal blooms. Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth, Eutrophication
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2014-277
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data overwhelmingly exceed 2014 WisCALM listing thresholds for the Recreation use and exceed thresholds for the Fish and Aquatic Life use, however, chlorophyll data do not exceed REC or FAL thresholds.
Date
1/13/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceed 2016 WisCALM listing thresholds for the Recreation use, exceeded Fish and Aquatic Life use, and chlorophyll data exceeded REC and FAL thresholds.
Date
10/9/2015
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data clearly exceeded 2018 WisCALM listing criteria for the Recreation use and Fish and Aquatic Life use. Chlorophyll sample data clearly exceeded 2018 WisCALM listing criteria for Recreation use.
Date
5/24/2017
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus and chlorophyll sample data exceeded 2020 WisCALM listing thresholds for the Recreation use, but only phosphorus also exceeded Aquatic Life thresholds
Date
8/1/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; total phosphorus and chlorophyll sample data exceeded 2022 WisCALM listing thresholds for the Recreation use, but only phosphorus also exceeded Aquatic Life thresholds.
Date
5/26/2021
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2018
Designated Use
303(d) ID
73
Listing Date
4/1/1998
Impaired Water Notes
New fish tissue data indicates that this waterbody no longer needs a specific fish consumption advice for Mercury. This water should have its Mercury listing removed.
Date
5/24/2017