Impaired Water - Dorn Creek (Spring (Dorn) Creek)
Dane County, Wisconsin
LR10
805600
0.00 - 1.00
1.00
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was assessed during the 2016 listing cycle; temperature sample data clearly met 2016 WisCALM listing thresholds for the Fish and Aquatic Life use.

This water was assessed during the 2018 listing cycle; new total phosphorus sample data overwhelmingly exceed 2018 WisCALM listing criteria for the Fish and Aquatic Life use and biological impairment was observed (i.e. at least one fish Index of Biotic Integrity (IBI) scored in the poor condition category). New macroinvertebrate sampled data were assessed, but did not indicate impairment.
Listing Details
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
2018-077
Listing Date
4/1/2018
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data overwhelmingly exceed 2018 WisCALM listing criteria for the Fish and Aquatic Life use and biological impairment was observed (i.e. at least one fish Index of Biotic Integrity (IBI) scored in the poor condition category).
Date
7/18/2017