Winnebago County, Wisconsin
WR01
241700
0.00 - 6.50
6.50
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Arrowhead River was evaluated during the 2018 and 2024 cycles; phosphorus levels were too high, reflected in poor fish community scores.
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.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
Low
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
2018-057
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 and biological impairment was observed. New macroinvertebrate and fish sample data were assessed; at least one fish Index of Biotic Integrity (IBI) scored in the poor condition category.
Date
7/16/2017
Impaired Water Notes
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.
Date
3/4/2020
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.
Date
5/24/2021