Portage County, Wisconsin
WR07
289400
73.24
Condition has improved over time; water is not impaired.
Notes
Tree Lake was evaluated every two-year cycle from 2014 to 2024; there was consistently elevated algal growth, though phosphorus did not exceed criteria. Pollutant
Unknown Pollutant
Listed For
Impairments
NA
Current Use
Listing Status
Water Delisted
Attainable Use
Priority
Delisted 2024
Designated Use
303(d) ID
2014-231
Listing Date
4/1/2014
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 2014 listing cycle; chlorophyll sample data exceed 2014 WisCALM listing thresholds for the Recreation use, however, total phosphorus data do not exceed REC thresholds . Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds.
Date
12/31/2013
Impaired Water Notes
This water was assessed during the 2016 listing cycle; chlorophyll sample data exceed 2016 WisCALM listing thresholds for the Recreation use, however, total phosphorus were clearly below REC thresholds. Total phosphorus and chlorophyll data were clearly below Fish and Aquatic Life listing thresholds.
Date
10/19/2015