Winnebago County, Wisconsin
WR01, WR02
241600
4,552.94
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was 303(d) listed for PCBs, Mercury, Total Phosphorus, and TSS in 1998. The Mercury listing was removed in the 2008 cycle PCBs were removed in the 2018 cycle.
Lake Winneconne was evaluated in the 2014, 2018,, 2022, and 2024 cycles; elevated phosphorus levels were confirmed as were algal blooms. This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
Degraded Aquatic Vegetation
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
Default - Fish and Aquatic Life
Priority
Low
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2024-27
Listing Date
4/1/2024
Pollutant
PCBs
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2018
Designated Use
303(d) ID
524
Listing Date
4/1/2008
Impaired Water Notes
New monitoring data. Add PCBs as pollutant consistent with the Lower Fox River PCB advisory.
Date
4/1/2008
Impaired Water Notes
New fish tissue data indicates that this waterbody no longer needs a specific fish consumption advisory for PCBs. This water should have its PCB listing removed.
Date
5/24/2017
Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Degraded Habitat
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
Default - Fish and Aquatic Life
Priority
Not Applicable
Designated Use
Default - Fish and Aquatic Life
303(d) ID
524
Listing Date
4/1/1998
Impaired Water Notes
Type of impairment: Severe algae blooms, habitat loss, pH exceedances
Source of impairment: Nonpoint nutrient and sediment loading, internal nutrient and sediment loading, unnaturally high water levels.
Date
1/18/2006
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
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2008
Designated Use
303(d) ID
524
Listing Date
4/1/1998
Impaired Water Notes
New data for fish contaminants removes listing.
Date
4/1/2008
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth, Eutrophication
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
524
Listing Date
4/1/1998
Impaired Water Notes
Type of impairment: Severe algae blooms, habitat loss, pH exceedances
Source of impairment: Nonpoint nutrient and sediment loading, internal nutrient and sediment loading, unnaturally high water levels.
Date
1/18/2006
Impaired Water Notes
TP and/or chlorophyll data from the period 2006-2010 were insufficient to assess per 2012 WisCALM. However, the previous assessment(s) were carried forward, and the lake remains listed as impaired.
Date
6/14/2011
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
1/20/2014
Impaired Water Notes
This water was assessed during the 2018 listing cycle; total phosphorus and chlorophyll-a sample data clearly exceeded 2018 WisCALM listing criteria for the Recreation use and Fish and Aquatic Life use.
Date
5/24/2017
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 cycle; new chlorophyll-a sample data exceeded 2022 WisCALM listing criteria for Recreation and nearly exceeded for Aquatic Life use.
Date
6/25/2021