Green Lake County, Wisconsin
UF07
146100
7,485.65
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Green Lake was placed on the 303(d) list for PCBs in fish tissue in 2002 and for Total Phosphorus and low Dissolved Oxygen in 2014. The PCB in fish tissue listing was removed in the 2022 cycle based on new fish tissue samples.
Green Lake was evaluated for phosphorus and chlorophyll from 2012 - 2024; phosphorus levels were too high from 2014 - 2024, but no chlorophyll impairment was found. Chloride was also evaluated and found not to be an issue. This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Low DO
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2014-224
Listing Date
4/1/2014
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 2014 listing cycle; total phosphorus sample data exceed 2014 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however, and chlorophyll data do not exceed REC thresholds . Dissolved oxygen levels were assessed and determined to be an impairment.
Date
12/31/2013
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus sample data clearly exceeded 2020 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however chlorophyll data did not exceed REC or FAL thresholds. Chloride data were also assessed but did not exceed 2020 WisCALM criteria. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
6/19/2019
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
3/4/2020
Impaired Water Notes
This water was assessed during the 2022 listing cycle; total phosphorus sample data clearly exceeded 2022 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.
Date
5/25/2021
Pollutant
PCBs
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2022
Designated Use
303(d) ID
623
Listing Date
4/1/2002
Impaired Water Notes
Fish tissue samples from 2011 were used in for the 2013 Fish Consumption Advisory updates - in these updates it was noted that no specific fish consumption advisory is needed for Green Lake. This update was previously overlooked, but is being amended this cycle.
Date
11/17/2021