Impaired Water - West Branch Sugar River (West Branch Sugar River)
Dane County, Wisconsin
SP16
886100
7.65 - 18.82
11.17
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This portion of the West Branch Sugar River was evaluated for phosphorus, bugs, or fish in 2018 and 2020. Phosphorus levels were too high for healthy aquatic communities like plants, bugs, and fish. Poor bug community health was found in 2020.
Listing Details
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Degraded Biological Community
Current Use
Coldwater - stocked, reproduction
Listing Status
303d Listed
Attainable Use
Coldwater - stocked, reproduction
Priority
Low
Designated Use
Coldwater - stocked, reproduction
303(d) ID
2018-086
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, available biological data do not indicate impairment. Existing macroinvertebrate and new fish sample data were assessed, but no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category.
Date
7/20/2017

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 and biological impairment was observed (i.e. at least one macroinvertebrate Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
7/12/2019

 
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2004
Designated Use
303(d) ID
847
Listing Date
4/1/2002
Impaired Water Notes
TMDL ID 847 assigned to this segment; no previously assigned ID could be found.
Date
4/1/2008