Oneida County, Wisconsin
UW42
1590400
580.71
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Pickerel Lake was on the Impaired Waters List for mercury in fish tissue from the 1998 to 2018 cycles. The lake was listed for excess algal growth in the 2014 cycle and elevated phosphorus in the 2022 cycle. Evaluations every two-year cycle from 2016 to 2024 confirmed the excess algal growth.Pollutant
Unknown Pollutant
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
Addition
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2026-59
Listing Date
4/1/2026
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
Deletion
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2022-043
Listing Date
4/1/2022
Impaired Water Notes
This water was assessed during the 2022 cycle; new chlorophyll-a sample data exceeded 2022 WisCALM listing criteria for Recreation use. Phosphorus levels have been at "May Exceed" since the 2014 cycle, with new data added each time. It was decided to add Phosphorus to the Impaired Waters List based on the long record of data.
This waterbody has a huge watershed relative to the lake size. The watershed is 92% natural landcover (forest and wetland). Although the data shows that it may exceed for TP and chlorophyll the values haven't changed over the past twenty years. It is a eutrophic lake most likely because of it's position in the large watershed and the shallow depth.
Date
6/14/2021
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2018
Designated Use
303(d) ID
351
Listing Date
4/1/1998
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new fish tissue data indicates that this waterbody no longer needs a specific fish consumption advice for Mercury. This water should have its Mercury listing removed.
Date
5/24/2017