Impaired Water - Herby Lake (Herby Lake)
Polk County, Wisconsin
SC09
2468900
62.62
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Assessments during the 2020 listing cycle show total phosphorus levels too high for healthy aquatic communities, like plants, fish, and bugs. Chlorophyll data were found to be appropriate for both Recreation and Aquatic Life uses. This water was proposed for the impaired waters list in 2020. 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
Impairment Unknown
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
2020-032
Listing Date
4/1/2020
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus sample data exceeded 2020 WisCALM listing thresholds; however, chlorophyll sample data clearly met 2020 WisCALM listing thresholds for the Recreation use and Aquatic Life use.
Date
7/29/2019

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