Ashland County, Wisconsin
LS12
2916900
227.06
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Mineral Lake was put on the 303(d) list due to mercury in 1998 and was removed from the Special Fish Consumption List in 2000.
Mineral 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: Marengo River Watershed Partnership Project: Watershed Action Plan (expires 2023)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
2016-271
Listing Date
4/1/2016
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 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
8/7/2015
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 clearly below REC and AL thresholds. This lake is covered by a restoration plan: Marengo River Watershed Partnership Project: Watershed Action Plan (2023)
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 clearly below REC and AL thresholds. Based on this information no change in listing details was needed.
Date
4/14/2021
Pollutant
Mercury
Listed For
Fish and Aquatic Life
Impairments
Mercury Contaminated Fish Tissue
Current Use
Unsupported Aquatic Life
Listing Status
Water Delisted
Attainable Use
Default - Fish and Aquatic Life
Priority
Delisted 2012
Designated Use
Default - Fish and Aquatic Life
303(d) ID
292
Listing Date
4/1/1998
Impaired Water Notes
This water was assessed during the 2012 listing cycle; new fish tissue data confirms that the statewide advisory is sufficient because mercury concentrations fall in the range of the general advisory.
Date
4/1/2012