Walworth County, Wisconsin
LR14
777500
63.27
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Lake Lorraine was evaluated every two-year cycle from 2014 to 2024; in the 2016 cycle excess algal growth was identified as an impairment and in the 2018 cycle phosphorus was identified as a pollutant. Evaluations from 2018 to 2024 confirmed the high phosphorus and algal levels. This lake is on the Impaired Waters List. Assessment of the macrophyte community in 2026 confirmed the aquatic plant community was impaired due to total phosphorus and also for unspecified pollutants. Pollutant
Unknown Pollutant
Listed For
Fish and Aquatic Life
Impairments
Degraded Aquatic Vegetation
Current Use
Unsupported Aquatic Life
Listing Status
Addition
Attainable Use
Default - Fish and Aquatic Life
Priority
Low
Designated Use
Default - Fish and Aquatic Life
303(d) ID
2026-102
Listing Date
4/1/2026
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth, Degraded Aquatic Vegetation
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2018-239
Listing Date
4/1/2018
Impaired Water Notes
This water was assessed during the 2018 listing cycle; new total phosphorus sample data exceeded 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use; chlorophyll data only exceeded REC thresholds, not FAL.
Date
7/11/2017
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data exceeded 2020 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use; chlorophyll data only exceeded REC thresholds, not FAL.
Date
6/19/2019
Impaired Water Notes
This water was assessed during the 2022 listing cycle; new total phosphorus sample data exceeded 2022 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use; chlorophyll data only exceeded REC thresholds, not FAL.
Date
4/13/2021
Impaired Water Notes
This water was listed for excess algal growth with an unknown pollutant during the 2016 cycle.
Date
8/7/2015