Grant County, Wisconsin
GP01
940200
10.31 - 21.13
10.82
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was evaluated for phosphorus in the 2016, 2018, and 2024 assessment cycles; elevated phosphorus levels were consistently found and this water was listed in 2016. Biological impairment was also observed. Temperature was at appropriate levels.Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Degraded Biological Community
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Medium
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
2016-120
Listing Date
4/1/2016
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 (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
7/19/2017
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 and biological impairment was observed (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
8/26/2015