Impaired Water - Long Lake (Long Lake (Three Lakes Chain))
Oneida County, Wisconsin
UW44
1609000
604.27
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
In addition to mercury contamination, Long Lake exibits degraded in-stream habitat from local agricultural activity. Water has virtually disappeared from the lake due to drought and 13 nearby high capacity farm irrigation wells, which pump up to 720,000 gallons of water/day from the lake.

This water was assessed during the 2014 listing cycle; total phosphorus sample data clearly met 2014 WisCALM listing thresholds for the Recreation use, total phosphorus and chlorophyll sample data clearly met 2014 WisCALM listing thresholds for the Fish and Aquatic Life use.

This water was assessed during the 2016 listing cycle; total phosphorus sample data were clearly below 2016 WisCALM listing thresholds for Recreation use and Fish and Aquatic Life use. Chlorophyll sample data were clearly below FAL use listing thresholds and did not exceed REC listing thresholds.

This water was assessed during the 2018 listing cycle; new total phosphorus and chlorophyll sample data were clearly below 2018 WisCALM listing thresholds for the Recreation use and the Fish and Aquatic Life use.

Assessments of new total phosphorus and chlorophyll data during the 2020 listing cycle show these parameters are in good condition for Aquatic Life and Recreation uses according to 2020 WisCALM standards for these uses.
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
250
Listing Date
4/1/1998
Impaired Water Notes
In addition to mercury contamination, Long Lake suffers from a degraded habitat from local agricultural activity. Water has virtually disappeared from the lake due to drought and 13 nearby high capacity farm irrigation wells, which pump up to 720,000 gallons of water/day.
Date
10/20/2010