Manitowoc County, Wisconsin
MA01
66800
22.34
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water is covered by the Northeast Lakeshore TMDL, approved in 2023. New water quality data reviewed in the 2024 cycle confirmed the phosphorus and algae listings. A new impairment (observed effect) listing of degraded macrophytes was aded to the phosphorus listing.Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth, Degraded Aquatic Vegetation, Eutrophication
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2014-222
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data exceed 2014 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, chlorophyll data only exceed REC thresholds, not FAL.
Date
12/31/2013
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceed 2016 WisCALM listing thresholds for the Recreation use, exceeded Fish and Aquatic Life use, and chlorophyll data exceeded REC and FAL thresholds.
Date
10/9/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus sample data overwhelmingly exceeded 2020 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, and chlorophyll data also exceeded REC and FAL thresholds. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
6/19/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; total phosphorus sample data overwhelmingly exceeded 2022 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, and chlorophyll data also exceeded REC and FAL thresholds. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
5/26/2021