Marathon County, Wisconsin
CW17, CW18
1427200
22.34 - 45.64
23.30
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Big Eau Pleine River suffers from low dissolved oxygen levels due to excess phosphorus. This segment of the Big Eau Pleine River was evaluated for phosphorus and biology every two years between 2012 and 2024. Phosphorus levels were found to be too high. This water is part of the Wisconsin River TMDL.Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Low DO
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Not Applicable
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
39
Listing Date
4/1/1998
Impaired Water Notes
Big Eau Pleine River suffers from low dissolved oxygen levels due to excess phosphorus. The river has been 303(d) listed since 1998. A TMDL is in development for Big Eau Pleine River as part of the WI River Basin TMDL.
Date
4/22/2011
Impaired Water Notes
This water was assessed during the 2012 listing cycle, and total phosphorus sample data exceed 2012 WisCALM listing criteria for the fish and aquatic life use.
Date
6/17/2011
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data overwhelmingly exceed 2014 WisCALM listing thresholds for the Fish and Aquatic Life use, however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
2/26/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceeded 2016 WisCALM listing thresholds for the Fish and Aquatic Life use, however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
9/23/2015
Impaired Water Notes
This water is part of the 2019 approved Wisconsin River TMDL addressing Total Phosphorus and Total Suspended Solids.
Date
6/10/2019