Impaired Water - Long Trade Lake (Long Trade Lake)
Polk County, Wisconsin
SC10
2640500
150.49
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Long Trade Lake was evaluated for phosphorus and algae every two years between 2014 and 2022. Phosphorus levels were found to be too high, which was reflected in algal blooms. This lake is covered by a restoration plan: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (expires 2025).
Listing Details
Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
NA
Current Use
Shallow Lowland Lake
Listing Status
Pollutant Removed
Attainable Use
Supported Aquatic Life
Priority
Delisted 2018
Designated Use
Supported Aquatic Life
303(d) ID
2014-295
Listing Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus and chlorophyll sample data exceeded 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.

Proposing to delete Unknown Pollutant because its impairment is associated with Total Phosphorus.
Date
7/10/2017

Impaired Water Notes
This water was assessed during the 2014 listing cycle: total phosphorus sample data exceed 2014 WisCALM listing thresholds for the Recreation use, but not Fish and Aquatic Life use, and chlorophyll data exceeds both REC and FAL thresholds.
Date
1/15/2014

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, but not Fish and Aquatic Life use, and chlorophyll data exceeded both REC and FAL thresholds.
Date
10/12/2015

 
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
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
2012-8
Listing Date
4/1/2012
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus and chlorophyll sample data exceeded 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.
Date
7/10/2017

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 2014 listing cycle: total phosphorus sample data exceed 2014 WisCALM listing thresholds for the Recreation use, but not Fish and Aquatic Life use, and chlorophyll data exceeds both REC and FAL thresholds.
Date
1/15/2014

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, but not Fish and Aquatic Life use, and chlorophyll data exceeded both REC and FAL thresholds.
Date
10/12/2015

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. 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 and chlorophyll sample data exceeded 2022 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.
Date
5/26/2021