Portage County, Wisconsin
WR05
270200
42.93
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Collins Lake was put on the Impaired Waters List in the 1998 cycle due to mercury from atmospheric deposition.
Collins Lake was evaluated every two-year cycle from 2014 to 2024; phosphorus levels were too high, reflected in excess algal blooms. A listing for phosphorus was added in 2014.
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Impairment Unknown, Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2014-229
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 and chlorophyll sample data exceed 2014 WisCALM listing thresholds for the Recreation use. 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; total phosphorus and chlorophyll sample data exceeded 2016 WisCALM listing thresholds for the Recreation use, but did not exceed Fish and Aquatic Life thresholds.
Date
10/9/2015
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. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
6/14/2019
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; total phosphorus sample data clearly exceeded 2022 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however chlorophyll data did not exceed REC or FAL thresholds. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
4/20/2021
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
639
Listing Date
4/1/2002