Barron County, Wisconsin
LC09
1884800
76.93
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Sylvan Lake was placed on 303(d) list due to mercury in 1998 and is proposed for removal based on 2001 updated Fish Consumption advisories.
Sylvan Lake was evaluated for phosphorus and algae in 2016. Phosphorus levels were found to be too high, which was reflected in algal blooms. This lake is covered by a watershed plan: A Water Quality Strategy for the Land and Waters of the Red Cedar River Basin (expires in 2026).Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2016-244
Listing Date
4/1/2016
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceed 2016 WisCALM listing thresholds for the Recreation use, and chlorophyll data exceed REC thresholds. Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds.
Date
8/7/2015
Impaired Water Notes
Covered by A Water Quality Strategy for the Land and Waters of the Red Cedar River Basin (2026) and changed to Category 5W as a result.
Date
7/24/2019
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2020
Designated Use
303(d) ID
481
Listing Date
4/1/1998
Impaired Water Notes
This listing was part of a set removed from the impaired waters list due to a change in fish consumption advisory levels in 2001. In 2001 Wisconsin DNR put into effect a statewide fish consumption advisory for mercury due to atmospheric deposition. Most of the lakes removed from the specific fish consumption advisories list in 2001 were not removed from the impaired waters list even though the thresholds had changed. For the 2020 assessment process WDNR requested delisting of 91 waters with residual mercury listings from prior to 2001. This request was approved by US EPA.
Date
9/4/2018