Impaired Water - East Twin River (East Twin River)
Kewaunee County, Wisconsin
TK02
84000
26.40 - 34.18
7.78
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This portion of the East Twin River was evaluated for phosphorus and biology in 2014, 2016, 2020, 2022 and 2024. In all years phosphorus levels were found to be too high. In 2014 poor biology was observed, but in 2016 and 2020 biology was in good health. This water is covered by the Northeast Lakeshore TMDL, approved in 2023.
Listing Details
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Impairment Unknown
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
Coldwater - stocked, reproduction
Priority
Not Applicable
Designated Use
Coldwater - stocked, reproduction
303(d) ID
2014-23
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data exceed 2020 WisCALM listing criteria for the 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
8/8/2019

Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data exceed 2014 WisCALM listing criteria for the Fish and Aquatic Life use and biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
1/23/2014

Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 WisCALM listing criteria for the Fish and Aquatic Life use.
Date
9/3/2015

Impaired Water Notes
This water was assessed during the 2022 listing cycle; new total phosphorus sample data exceed 2022 WisCALM listing criteria for the Aquatic Life use.
Date
5/24/2021