Manitowoc County, Wisconsin
MA01
49400
5.61
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was assessed during the 2018 and 2024 listing cycles. Phosphorus levels were found to be too high, which was reflected in algal blooms. This water is part of the Northeast Lakeshore TMDL, approved in 2023.Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
High Phosphorus Levels, Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2018-241
Listing Date
4/1/2018
Impaired Water Notes
This water was assessed during the 2018 listing cycle; total phosphorus sample data exceed 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however chlorophyll data do not exceed REC or FAL thresholds.
Date
8/1/2017
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus and chlorophyll sample data exceeded 2020 WisCALM listing thresholds for the Recreation use. Phosphorus, but not chlorophyll-a, data exceeded criteria for Aquatic Life Use.
Date
6/28/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; total phosphorus and chlorophyll sample data exceeded 2022 WisCALM listing thresholds for the Recreation use. Phosphorus, but not chlorophyll-a, data exceeded criteria for Aquatic Life Use.
Date
5/26/2021