Impaired Water - Big Bass Lake (Big Bass Lake)
Marathon County, Wisconsin
CW12
1405200
176.94
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Big Bass Lake was placed on the 303(d) impaired waters list due to mercury levels in fish tissue in 2002.

Big Bass Lake was evaluated every two years between 2012 and 2022 for chloride, phosphorus, and algae; levels were appropriate for healthy aquatic communities like plants, bugs, and fish. Aquatic plant communities of Big Bass Lake were evaluated in the 2022 cycle and found to be in good condition. This lake is on the Healthy Waters List.
Listing Details
Pollutant
Mercury
Listed For
Fish Consumption
Impairments
Mercury Contaminated Fish Tissue
Current Use
Specific Restricted Fish Consumption
Listing Status
303d Listed
Attainable Use
Unrestricted Fish Consumption
Priority
Low
Designated Use
Unrestricted Fish Consumption
303(d) ID
636
Listing Date
4/1/2002