Polk County, Wisconsin
SC12
2599400
82.20
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Ward Lake was evaluated for phosphorus and algae every two years between 2012 and 2024. Phosphorus and algae levels were too high as seen in algal blooms on the lake during the summer months. This lake is covered by a restoration plan: Implementation Plan for the Lake St. Croix Nutrient Total Maximum Daily Load (expires 2025).Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Impairment Unknown, Excess Algal Growth
Current Use
Unsupported Aquatic Life
Listing Status
303d Listed
Attainable Use
Default - Fish and Aquatic Life
Priority
Low
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2012-3006
Listing Date
4/1/2012
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new chlorophyll sample data exceeded 2018 WisCALM listing thresholds for the Recreation use. Chlorophyll sample data were clearly below listing thresholds for the Fish and Aquatic Life use.
Date
7/12/2017
Impaired Water Notes
This water was assessed during the 2014 listing cycle; chlorophyll sample data exceed 2014 WisCALM listing thresholds for the Recreation use, however, total phosphorus data do not exceed REC thresholds. Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds.
Date
3/24/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; chlorophyll sample data exceed 2016 WisCALM listing thresholds for the Recreation use, however, total phosphorus did not exceed REC thresholds. Total phosphorus and chlorophyll data were clearly below Fish and Aquatic Life listing thresholds.
Date
10/19/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new chlorophyll sample data exceeded 2020 WisCALM listing thresholds for the Recreation use. Chlorophyll sample data were clearly below listing thresholds for the Aquatic Life use. 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; new phosphorus and chlorophyll sample data exceeded 2020 WisCALM listing thresholds for the Recreation use, only phosphorus exceeded FAL use.
Date
5/25/2021
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2010
Designated Use
303(d) ID
505
Listing Date
4/1/1998
Impaired Water Notes
Delist Hg FCA in 2010 based on 2005 Largemouth Bass data (14 samples). This waterbody has data after the methodology changed for fish consumption advice. This waterbody has enough fish tissue samples to remove these waters from the 303(d) list as a FCA, although they will still all be covered under the state's general advisory for fish consumption. The post-2000 data confirms that these sites do not need advice more stringent that the statewide general advice.
Date
10/8/2009