Sawyer County, Wisconsin
UC23
2420600
1,559.02
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Moose Lake was originally included on the 303(d) list in 1998 due to mercury concentrations in fish tissue. This water was assessed for the 2012 listing cycle and the original listing due to mercury levels in fish tissue was confirmed.
Moose Lake was evaluated every two-year cycle from 2014 to 2024; phosphorus was identified as a pollutant in the 2014 cycle and levels were elevated in subsequent cycles. In the 2022 cycle levels were low enough to warrant removal of this pollutant from the Impaired Waters List. The lake remains listed for mercury in fish tissue.Pollutant
Total Phosphorus
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2022
Designated Use
303(d) ID
2016-259
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
8/19/2015
Impaired Water Notes
This water was assessed during the 2022 cycle; new phosphorus sample data nearly met 2022 WisCALM listing criteria for Recreation and Aquatic Life use. Based on low variability in the data and good biology, this pollutant listing is proposed for removal from the Impaired Waters List.
Date
6/14/2021
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
300
Listing Date
4/1/1998