Impaired Water - Lake Mendota (Marshall Park Beach)
Dane County, Wisconsin
LR10
805400
0.22
Condition has remained stable over time.
Notes
This water was delisted in 2010, as per WisCALM 2010. However this beach was assessed for the 2014 Impaired Waters List and E. coli data exceed 2014 WisCALM listing criteria indicating a Recreational use impairment.
This beach was assessed for the 2016 Impaired Waters List and E. coli data did not exceed 2016 WisCALM listing criteria.

This beach was assessed for the 2018 listing cycle; E. coli data sample data were clearly below 2018 WisCALM listing thresholds for the Recreation use.
Reports and Documents
WDNR
Water Evaluation Section
Water Evaluation Section
WDNR
Listing Details
Pollutant
E. coli
Listed For
Impairments
Recreational Restrictions - Pathogens
Current Use
Listing Status
Water Delisted
Attainable Use
Priority
Delisted 2016
Designated Use
303(d) ID
2014-212
Listing Date
4/1/2014
Impaired Water Notes
No samples exceeded the 126 Geomean threshold in 2006, 2007, and 2009. Insufficient number of samples for 2008.
Date
10/24/2009

Impaired Water Notes
Delisted in 2010. Originally IW ID: 2008-25.
Date
4/1/2010

Impaired Water Notes
This beach was reassessed for the 2014 listing cycle using the most recent data (added 2011 and 2012) and E. coli data exceed 2014 WisCALM listing criteria indicating a Recreational use impairment.
Date
2/24/2014

Impaired Water Notes
This beach was assessed for the 2016 Impaired Waters List and E. coli data did not exceed 2016 WisCALM listing criteria.
Date
8/19/2015