Brown County, Wisconsin
TK01
89600
0.00 - 5.95
5.95
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Twin Hill Creek was evaluated for bug community health every two years between 2016 and 2020; bug community was found to be in fair health. In 2020 this creek was evaluated for phosphorus and levels were too high for sustained healthy aquatic communities like plants, bugs, and fish. A phosphorus listing was added in 2020. This water is covered by the Northeast Lakeshore TMDL, approved in 2023. New water quality data reviewed in the 2024 cycle indicated no additional pollutants.Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
High Phosphorus Levels
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Not Applicable
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
2020-061
Listing Date
4/1/2020
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data overwhelmingly 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).
Date
7/12/2019