Sawyer County, Wisconsin
UC20
2393500
805.42
Condition has improved over time; water is not impaired.
Notes
Sissabagama Lake was evaluated every two-year cycle from 2012 to 2024; there was consistently elevated algal growth, though phosphorus did not exceed criteria. This lake was put on the Impaired Waters List in the 2012 cycle.Pollutant
Unknown Pollutant
Listed For
Impairments
NA
Current Use
Listing Status
Water Delisted
Attainable Use
Priority
Delisted 2024
Designated Use
303(d) ID
2016-307
Listing Date
4/1/2016
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new chlorophyll sample data exceeded 2018 WisCALM listing thresholds for the Recreation use. Total phosphorus data were clearly below Recreation use and Fish and Aquatic Life use listing thresholds.
Date
7/12/2017
Impaired Water Notes
This water was assessed during the 2016 listing cycle; chlorophyll sample data partially exceeded 2016 WisCALM listing thresholds for the Recreation use, however, total phosphorus data were clearly below REC thresholds. Total phosphorus and chlorophyll data were clearly below Fish and Aquatic Life thresholds. The TP listing is proposed for deletion, but the water will remain listed for excess algal growth.
Date
12/22/2015
Pollutant
Total Phosphorus
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2016
Designated Use
303(d) ID
2012-019
Listing Date
4/1/2012
Impaired Water Notes
This water was assessed during the 2012 listing cycle, and total phosphorus and chlorophyll a sample data exceed 2012 WisCALM listing thresholds for the recreation use; however Fish and Aquatic Life thresholds for total phosphorus and chlorophyll were not exceeded. Based on a report from the regional biologist the high TP levels are noted as potentially natural conditions.
Date
3/26/2012
Impaired Water Notes
This water was assessed during the 2016 listing cycle; chlorophyll sample data partially exceeded 2016 WisCALM listing thresholds for the Recreation use, however, total phosphorus data were clearly below REC thresholds. Total phosphorus and chlorophyll data were clearly below Fish and Aquatic Life thresholds. The TP listing is proposed for deletion, but the water will remain listed for excess algal growth.
Date
12/22/2015