Milwaukee County, Wisconsin
MI01
15200
0.00 - 3.50
3.50
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This segment of Wilson Park Creek was put on the Impaired Waters List during the 2010 cycle due to high bacteria concentrations causing recreational restrictions. During the 2018 cycle phosphorus and chloride pollutants were identified. Evaluations in the 2020, 2022, and 2024 cycles confirmed the phosphorus and chloride listings.Pollutant
E. coli
Listed For
Recreation
Impairments
Impairment Unknown
Current Use
Restricted Recreation
Listing Status
TMDL Approved
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2024-84
Listing Date
4/1/2024
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
NA
Current Use
Unsupported Aquatic Life
Listing Status
Pollutant Removed
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Delisted 2024
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
2018-028
Listing Date
4/1/2018
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data exceed 2018 WisCALM listing criteria for the Fish and Aquatic Life use, however, no biological data (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scores) were available to assess biological impairment.
Date
7/6/2017
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data exceed 2020 WisCALM listing criteria for the Fish and Aquatic Life use, however, no biological data (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scores) were available to assess biological impairment. New temperature data was assessed, but did not exceed 2018 WisCALM listing criteria. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
6/12/2019
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
WWFF - Warmwater Forage Fishery
Priority
Low
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
2018-009
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
6/29/2017
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
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
2010-35
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
Wilson Park Creek has water quality and habitat problems supporting the decision to list it as impaired. Fecal coliform concentrations are in violation of the recreational criterion over 40% of the time in the creek. Up to 60% of FC loads cannot be explained by urban land uses, suggesting unidentified sources such as illicit discharges and leaking sewers. The habitat is severely degraded. The creek’s headwaters are at Mitchell International Airport. Some of the creek is enclosed here and most concrete lined. Even though this condition may not change, the concrete lined portions downstream from the airport have the potential to rebound if the concrete lining is removed. This used to be uncontrollable, but recent projects by MMSD show that concrete lining can be successfully removed.
Date
11/25/2009