Impaired Water - Fox River (Fox River (At Oshkosh))
Return to Search
Winnebago County, Wisconsin
UF04, WATE
117900
View Water Details
57.76 - 58.25
0.49
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This segment of the Fox River exhibits acute aquatic toxicity caused by PAHs and it was added to the Impaired Waters List in the 2004 cycle.

Evaluations in the 2014, 2020, and 2024 cycles for chloride, phosphorus, and biology showed good conditions. 2026 cycle found new data suggesting harmful chlorophyll-A levels for recreation.
Listing Details
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
Addition
Attainable Use
Recreation
Priority
Not Applicable
Designated Use
Recreation
303(d) ID
2026-19
Listing Date
4/1/2026
 
Pollutant
PAHs
Listed For
Fish and Aquatic Life
Impairments
Acute Aquatic Toxicity
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
156
Listing Date
4/1/2004