Washburn County, Wisconsin
LC10
2106800
3,478.00
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Long Lake was evaluated for phosphorus and algae every two years between 2012 and 2024. Phosphorus levels were found to be too high as seen by algal blooms. This lake is covered by a restoration plan: A Water Quality Strategy for the Land and Waters of the Red Cedar River Basin (expires 2026). Long Lake is on the Impaired Waters List.Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
High Phosphorus Levels, Eutrophication
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2014-271
Listing Date
4/1/2014
Impaired Water Notes
The 2018 assessments showed continued impairment by phosphorus; total phosphorus sample data overwhelmingly exceeded 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use and chlorophyll data only exceeded the FAL threshold. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
7/11/2017
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data overwhelmingly exceed 2014 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however, chlorophyll data do not exceed REC or FAL thresholds.
Date
1/13/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceeded 2016 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use and chlorophyll data only exceeded FAL thresholds.
Date
10/19/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus sample data overwhelmingly exceeded 2020 WisCALM listing thresholds for the Recreation use and Aquatic Life use, and chlorophyll data did not exceed either threshold. This lake is covered by the following restoration plan and was classified as Category 5W as a result: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (2025).
Date
7/24/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; total phosphorus sample data overwhelmingly exceeded 2022 WisCALM listing thresholds for the Recreation use and Aquatic Life use, and chlorophyll data did not exceed either threshold. Based on this information no listing changes were needed.
Date
4/14/2021