Impaired Water - Largon Lake (Largon Lake)
Polk County, Wisconsin
SC12
2668100
134.84
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was assessed during the 2020 cycle; phosphorus and algae sample data exceeded 2020 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use. The 2022 cycle evaluation of aquatic plant data indicated healthy communities. This lake is covered by a restoration plan: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (2025).
Listing Details
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Eutrophication, Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Full Body Contact - Swimming, Boating
Priority
Low
Designated Use
Full Body Contact - Swimming, Boating
303(d) ID
2020-035
Listing Date
4/1/2020
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus and chlorophyll sample data exceeded 2020 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.
Date
7/22/2019

Impaired Water Notes
This lake is covered by the following watershed plan and was classified as Category 5W as a result: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (2025).
Date
8/15/2019