Milwaukee County, Wisconsin
MI03
16700
0.00 - 2.84
2.84
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water is covered by the Menomonee River Watershed Nine Key Plan, approved in January 2022. New water quality data reviewed in the 2024 cycle confirmed the chloride listing.Pollutant
Chloride
Listed For
Fish and Aquatic Life
Impairments
Acute Aquatic Toxicity, Chronic Aquatic Toxicity
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
Default - Fish and Aquatic Life
Priority
Low
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2018-013
Listing Date
4/1/2018
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new chloride sample data exceed 2018 WisCALM listing criteria for the Fish and Aquatic Life use.
Date
6/30/2017
Impaired Water Notes
This water was assessed during the 2022 listing cycle; new chloride sample data exceed 2022 WisCALM listing criteria for the Fish and Aquatic Life use.
Date
5/26/2021
Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
Elevated Water Temperature, Degraded Biological Community
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
Default - Fish and Aquatic Life
Priority
Low
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2016-286
Listing Date
4/1/2016
Impaired Water Notes
This water was assessed during the 2016 listing cycle; temperature data exceeded 2016 WisCALM listing thresholds for the Fish and Aquatic Life use.
Date
8/30/2015
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Degraded Biological Community
Current Use
Unsupported Aquatic Life
Listing Status
Pollutant Removed
Attainable Use
Default - Fish and Aquatic Life
Priority
Delisted 2016
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2012-85
Listing Date
4/1/2012
Impaired Water Notes
Based on the total phosphorus criteria excursions and the corroborating biological assessment, degraded biological community impairment was added to the existing impaired water listing in 2012. This water was assessed during the 2012 listing cycle, and total phosphorus sample data exceed 2012 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). List in 2010 based on fecal coliform and recreational restrictions.
Date
8/30/2011
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
2/26/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data clearly met 2016 WisCALM listing criteria for the Fish and Aquatic Life use, however, biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
8/30/2015
Pollutant
Fecal Coliform
Listed For
Recreation
Impairments
Recreational Restrictions - Pathogens
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2010-41
Listing Date
4/1/2010
Impaired Water Notes
The Milwaukee River Watershed TMDL was approved by the EPA on March 9, 2018 and covers waters in the basin impaired for Total Phosphorus, Sediment/Total Suspended Solids, and bacteria (E. coli and Fecal Coliform).
Date
3/9/2018
Impaired Water Notes
Underwood Creek has been extensively modified, has concrete lining and drop structures and experiences flashy flow conditions. At modeled assessment points in Underwood Creek, based on monitoring data, fecal coliform counts exceed 400 cfu/100 ml 39% of time MN-13; 29% at MN-14 annually and 23% and 14% of time from May-September (which exceed WisCALM listing thresholds). 75% of the Fecal Coliform urban nonpoint loads cannot be explained but they could be caused by illicit connections or leaky sewers. Fecal coliform loadings from Underwood Creek contribute to high fecal coliform levels in the Menomonee River Watershed.
Date
3/23/2010