Impaired Water - Swan Lake (Swan Lake)
Columbia County, Wisconsin
UF15
179800
407.50
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was added to the impaired waters list in 2014 for excess algal growth. Assessments every two-year cycle from 2012 to 2022 confirmed algal impairment.
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.
Listing Details
Pollutant
Unknown Pollutant
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2014-227
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. Chlorophyll sample data were clearly below listing thresholds for the Fish and Aquatic Life use.
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 did not exceed REC thresholds. Total phosphorus and chlorophyll data did not exceed Fish and Aquatic Life listing thresholds.
Date
10/19/2015

Impaired Water Notes
This water was assessed during the 2020 listing cycle; new chlorophyll sample data exceeded 2020 WisCALM listing thresholds for the Recreation use. Chlorophyll sample data were clearly below listing thresholds for the Fish and Aquatic Life use.
Date
6/7/2019

Impaired Water Notes
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020
Date
3/3/2020

Impaired Water Notes
This water was assessed during the 2022 listing cycle; new chlorophyll sample data exceeded 2022 WisCALM listing thresholds for the Recreation use. Chlorophyll sample data were clearly below listing thresholds for the Fish and Aquatic Life use.
Date
6/1/2021