Impaired Water - Chippewa River (Chippewa River)
Chippewa, Eau Claire County, Wisconsin
LC18, LC24
2050000
60.05 - 77.04
16.99
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
On 303d List since 2002 for PCBs. Delisted Mercury for this segment in 2006 - changed category from atmospheric deposition to Contaminated Sediment for consistency.

This water was assessed during the 2018 listing cycle; new chloride and biological (fish Index of Biotic Integrity (IBI) scores) sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use.

Assessments of new chloride levels during the 2020 listing cycle showed conditions appropriate for healthy aquatic communities like plants, fish, and bugs.
Listing Details
Pollutant
Mercury
Listed For
Fish Consumption
Impairments
NA
Current Use
Specific Restricted Fish Consumption
Listing Status
Pollutant Removed
Attainable Use
Unrestricted Fish Consumption
Priority
Delisted 2006
Designated Use
Unrestricted Fish Consumption
303(d) ID
80
Listing Date
4/1/2002
Impaired Water Notes
New monitoring data. Proposed Delist of Mercury / FCA for this segment - changed category from ATM Dep to Contaminated Sediment for consistency. Hg specific advisories for first 105 miles of river are no longer valid due to new monitoring data. These advisories and the associated 303d listing are proposed for delisting
Date
4/1/2008

 
Pollutant
PCBs
Listed For
Fish Consumption
Impairments
PCBs Contaminated Fish Tissue
Current Use
Specific Restricted Fish Consumption
Listing Status
303d Listed
Attainable Use
Unrestricted Fish Consumption
Priority
Low
Designated Use
Unrestricted Fish Consumption
303(d) ID
80
Listing Date
4/1/2002
Impaired Water Notes
New monitoring data. Proposed Delist of Mercury / FCA for this segment - changed category from ATM Dep to Contaminated Sediment for consistency. Hg specific advisories for first 105 miles of river are no longer valid due to new monitoring data. These advisories and the associated 303d listing are proposed for delisting.
Date
4/1/2008