Marathon County, Wisconsin
CW24
1453200
1.31 - 2.38
1.07
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was evaluated every two-year cycle from 2016 to 2024; temperature, chloride, fish community, and macroinvertebrate (bug) community and all were at good levels. Phosphorus assessment in 2020 showed levels were too high for healthy aquatic communities (plants, fish, bugs). This water is covered by the Wisconsin River Basin TMDL, approved in 2019.Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Impairment Unknown
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
Default - Fish and Aquatic Life
Priority
Not Applicable
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2020-052
Listing Date
4/1/2020
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data exceed 2020 WisCALM listing criteria 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). This listing is part of the Wisconsin River Basin TMDL.
Date
7/2/2019