Impaired Water - Mallalieu Lake (Mallalieu Lake)
Saint Croix County, Wisconsin
SC02
2607100
289.08
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
303d impaired waters for eutrophication, pH from phosphorus. The pH shall be within the range of 6.0 to 9.0; the water exceeds the pH criteria.

TP and/or chlorophyll data from the period 2006-2010 were insufficient to assess per 2012 WisCALM. However, the previous assessment(s) were carried forward, and the lake remains listed as impaired.

This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.

This water was assessed during the 2018 listing cycle; new chlorophyll sample data exceeded 2018 WisCALM listing thresholds for the Recreation use.
Reports and Documents
Aaron Larson
Schreiber, Ken
Aaron Larson
Water Evaluation Section
Listing Details
Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Eutrophication, Excess Algal Growth, Elevated pH
Current Use
Full Body Contact - Swimming, Boating
Listing Status
TMDL Development
Attainable Use
Full Body Contact - Swimming, Boating
Priority
High
Designated Use
Full Body Contact - Swimming, Boating
303(d) ID
702
Listing Date
4/1/2004
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
Bi-weekly lake sampling from May-Sept. 2003 (pH exceedances on 2 of 6 dates).
Date
5/11/2005

Impaired Water Notes
TP and/or chlorophyll data from the period 2006-2010 were insufficient to assess per 2012 WisCALM. However, the previous assessment(s) were carried forward, and the lake remains listed as impaired.
Date
6/13/2011

Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceeded 2016 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use.
Date
12/31/2015