Washburn County, Wisconsin
LC10
1844000
43.01
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Deep Lake was evaluated for phosphorus and algae every two years between 2012 and 2024. Phosphorus levels were found to be too high as shown by algal blooms on the lake during summer months. This lake is covered by a restoration plan: A Water Quality Strategy for the Land and Waters of the Red Cedar River Basin (2026).Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Impairment Unknown, Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2012-14
Listing Date
4/1/2012
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data exceeded 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use; chlorophyll data only exceeded REC thresholds, not FAL.
Date
7/11/2017
Impaired Water Notes
This water was assessed during the 2012 listing cycle, and total phosphorus and chlorophyll sample data exceed 2012 WisCALM listing thresholds for the recreation use.
Date
6/16/2011
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus and chlorophyll sample data exceeded 2016 WisCALM listing thresholds for the Recreation use, but did not exceed Fish and Aquatic Life thresholds.
Date
10/9/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new chlorophyll sample data were clearly below 2020 WisCALM listing thresholds for Aquatic Life use. New total phosphorus sample data were not clearly below listing thresholds. This lake is covered by a restoration plan: A Water Quality Strategy for the Land and Waters of the Red Cedar River Basin (2026).
Date
7/24/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; new chlorophyll sample data were clearly below 2022 WisCALM listing thresholds for Aquatic Life use. New total phosphorus sample data were not clearly below listing thresholds.
Date
6/1/2021