Rusk County, Wisconsin
UC07
4000013
0.00 - 0.55
0.55
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Stream C was placed on the impaired waters list for acute aquatic toxicity caused by zinc and copper in the water column. Data collected from 2016 - 2018 was assessed during the 2020 assessment cycle and zinc levels were low enough to warrant deletion of this pollutant. Copper was also reevaluated, but levels were still too high. Pollutant
Zinc
Listed For
Fish and Aquatic Life
Impairments
Acute Aquatic Toxicity
Current Use
Unsupported Aquatic Life
Listing Status
Pollutant Removed
Attainable Use
Default - Fish and Aquatic Life
Priority
Delisted 2020
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2012-126
Listing Date
4/1/2012
Impaired Water Notes
"Analysis of the submitted data found the concentrations of TRC in Stream C exceeded the impairment threshold 54 times and the concentrations of TRZ exceeded the impairment threshold 30 times. Based on the available data it appears that the water quality in Stream C is impaired by the pollutants TRC and TRZ."
Date
4/1/2012
Impaired Water Notes
Data collected from 2013 - 2015 was assessed during the 2018 assessment cycle and it confirmed impairment by zinc.
Date
11/13/2017
Impaired Water Notes
Data collected from 2016 - 2018 was assessed during the 2020 assessment cycle. There were no exceedances (0/15) of acute aquatic toxicity criteria. This zinc listing is recommended for removal in the 2020 cycle.
Date
8/5/2019
Pollutant
Copper
Listed For
Fish and Aquatic Life
Impairments
Acute Aquatic Toxicity
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
2012-125
Listing Date
4/1/2012
Impaired Water Notes
"Analysis of the submitted data found the concentrations of TRC in Stream C exceeded the impairment threshold 54 times and the concentrations of TRZ exceeded the impairment threshold 30 times. Based on the available data it appears that the water quality in Stream C is impaired by the pollutants TRC and TRZ."
Date
4/1/2012
Impaired Water Notes
Data collected from 2013 - 2015 was assessed during the 2018 assessment cycle and it confirmed impairment by copper.
Date
11/13/2017
Impaired Water Notes
Data collected from 2016 - 2018 was assessed during the 2020 assessment cycle and it confirmed impairment by copper.
Date
8/5/2019