Impaired Water - Lake Winneconne (Winneconne Lake)
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 2008. This water is in TMDL development for Total Phosphorus and Total Suspended Solids.

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.

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. New fish tissue data indicates that this waterbody no longer needs a specific fish consumption advice for PCBS. This water should have its PCB listing removed.
Listing Details
Pollutant
PCBs
Listed For
Impairments
PCBs Contaminated Fish Tissue
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
Mercury
Listed For
Impairments
Mercury Contaminated Fish Tissue
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
Fish and Aquatic Life
Impairments
Eutrophication, Excess Algal Growth
Current Use
Shallow Lowland Lake
Listing Status
TMDL Development
Attainable Use
FAL - Fish and Aquatic Life Community
Priority
High
Designated Use
FAL - Fish and Aquatic Life Community
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

 
Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Degraded Habitat
Current Use
Shallow Lowland Lake
Listing Status
TMDL Development
Attainable Use
FAL - Fish and Aquatic Life Community
Priority
High
Designated Use
FAL - Fish and Aquatic Life Community
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