Impaired Water - North Branch Manitowoc River (North Branch Manitowoc River)
Calumet County, Wisconsin
MA04, MA05
75900
0.00 - 7.35
7.35
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
The North Branch of Manitowoc River suffers from low dissolved oxygen from total suspended solids and total phosphorus. It was added to the Impaired Waters List in the 1998 cycle.

Evaluations during every two-year cycle from 2014 to 2022 confirmed the phosphorus impairments.
Listing Details
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
High Phosphorus Levels, Low DO
Current Use
Supported Aquatic Life
Listing Status
TMDL Development
Attainable Use
Supported Aquatic Life
Priority
High
Designated Use
Supported Aquatic Life
303(d) ID
265
Listing Date
4/1/1998
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data overwhelmingly exceed 2014 WisCALM listing thresholds 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
2/27/2014

Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceeded 2016 WisCALM listing thresholds 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
9/23/2015

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.
Date
8/5/2019

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. This stream is part of the Nine Key Plan for the North Branch of the Manitowoc River Watershed.
Date
5/24/2021

 
Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Low DO, Degraded Habitat
Current Use
Supported Aquatic Life
Listing Status
TMDL Development
Attainable Use
Supported Aquatic Life
Priority
High
Designated Use
Supported Aquatic Life
303(d) ID
265
Listing Date
4/1/1998
Impaired Water Notes
This stream is part of the Nine Key Plan for the North Branch of the Manitowoc River Watershed.
Date
12/21/2021