Milwaukee County, Wisconsin
SE05
14500
0.00 - 13.32
13.32
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Oak Creek was placed on the 303(d) list due to chronic aquatic toxicity caused by an undetermined pollutant in 1998. In the 2012 cycle this stream segment was listed for phosphorus and degraded biological community. In the 2014 cycle this stream segment was listed for aquatic toxicity caused by chloride.
This segment of Oak Creek was evaluated every two-year cycle from 2012 to 2024; chloride and phosphorus levels were too high for healthy aquatic plants, bugs, and fish. Metals evaluation showed levels safe for both humans and aquatic life.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
2014-6
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2014 listing cycle and chloride sample data exceed 2014 WisCALM listing criteria for the Fish and Aquatic Life use.
Date
12/31/2013
Impaired Water Notes
This water was assessed during the 2016 listing cycle and chloride sample data exceed 2016 WisCALM chronic and acute listing criteria for the Fish and Aquatic Life use.
Date
8/20/2015
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
4/11/2017
Impaired Water Notes
This water was assessed during the 2020 listing cycle; chloride sample data exceed 2020 WisCALM listing criteria for the Fish and Aquatic Life use. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
6/12/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; chloride sample data exceed 2022 WisCALM listing criteria for the Fish and Aquatic Life use. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
5/20/2021
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
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
2012-81
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.
Date
8/30/2011
Impaired Water Notes
This water was assessed during the 2014 listing cycle: biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category). TP impairment was unclear, but the 2012 TP impairment was carried forward.
Date
1/21/2014
Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
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
325
Listing Date
4/1/1998