Milwaukee County, Wisconsin
MI02
20000
0.00 - 2.65
2.65
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Beaver Creek was evaluated in 1998 and aquatic toxicity was found but the pollutant was unknown. In 2014 the creek was evaluated for phosphorus and levels were too high for healthy aquatic communities like plants, bugs, and fish. High phosphorus levels were confirmed every two-year cycle from 2016 to 2024. In 2020 chloride was identified as the source of aquatic toxicity.Pollutant
Chloride
Listed For
Fish and Aquatic Life
Impairments
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
2020-079
Listing Date
4/1/2020
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.
Date
7/1/2019
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
NA
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Not Applicable
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
2014-12
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2022 listing cycle; new total phosphorus sample data exceed 2022 WisCALM listing criteria for the Fish and Aquatic Life use, however, no biological data were available to assess biological impairment.
Date
4/14/2021
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
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, 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
1/14/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 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
10/7/2015
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
4/14/2017
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.
Date
7/1/2019
Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
Chronic Aquatic Toxicity
Current Use
Unsupported Aquatic Life
Listing Status
Pollutant Removed
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Delisted 2020
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
31
Listing Date
4/1/1998
Impaired Water Notes
This water was assessed in 2020 with 2020 WisCALM guidance. The aquatic toxicity was determined to be from Chloride. This Unknown Pollutant is being removed now that the pollutant is known.
Date
7/1/2019