Impaired Water - Upper Post Lake (Post Lake, Upper)
Langlade, Oneida County, Wisconsin
WR20
399200
765.18
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This water was added to the impaired waters list in 2012 for excess algal growth and for total phosphorus in 2014. Assessments in 2018 and 2020 confirmed the impairments.
Listing Details
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
TMDL Development
Attainable Use
Full Body Contact - Swimming, Boating
Priority
High
Designated Use
Full Body Contact - Swimming, Boating
303(d) ID
2014-308
Listing Date
4/1/2014
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.
Date
7/12/2017

Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus and chlorophyll sample data exceed 2014 WisCALM listing thresholds for the Recreation use. Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds.
Date
1/20/2014

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.
Date
6/7/2019

 
Pollutant
Unknown Pollutant
Listed For
Recreation
Impairments
Excess Algal Growth
Current Use
Restricted Recreation
Listing Status
Pollutant Removed
Attainable Use
Full Body Contact - Swimming, Boating
Priority
Delisted 2014
Designated Use
Full Body Contact - Swimming, Boating
303(d) ID
2012-3009
Listing Date
4/1/2012
Impaired Water Notes
With additional data this lake was assessed in the 2014 cycle and total phosphorus and chlorophyll sample data exceed 2014 WisCALM listing thresholds for the Recreation use. Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life thresholds. The pollutant is no longer 'unknown', but is total phosphorus. Based on this new assessment information this pollutant should be removed.
Date
1/20/2014