Iron County, Wisconsin
UC13, UC14
2294900
12,942.50
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was originally listed as impaired in 2002 due to mercury fish tissue concentrations.
Turtle Flambeau Flowage was evaluated for phosphorus and algae every two-year cycle from 2014 to 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
2014-279
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data overwhelmingly exceeded 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, and chlorophyll data also exceeded both thresholds.
Date
7/14/2017
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 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 and Fish and Aquatic Life use and chlorophyll data did not exceed REC and FAL thresholds.
Date
10/19/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data overwhelmingly exceeded 2020 WisCALM listing thresholds for the Recreation use and Aquatic Life use; new chlorophyll-a data also exceeded REC and AL uses. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
8/1/2019
Pollutant
Mercury
Listed For
Fish Consumption
Impairments
Mercury Contaminated Fish Tissue
Current Use
Specific Restricted Fish Consumption
Listing Status
303d Listed
Attainable Use
General Fish Consumption Advice
Priority
Low
Designated Use
General Fish Consumption Advice
303(d) ID
631
Listing Date
4/1/2002