Impaired Water - Unnamed (Wuerches Creek)
Green Lake County, Wisconsin
UF07
148300
0.00 - 4.40
4.40
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This stream segment was originally listed in 1998 for the following impairments: low dissolved oxygen, degraded habitat, and elevated water temperature. These impairments are caused by elevated sediment/TSS and and total phosphorus concentrations.
This water was assessed during the 2012 listing cycle, and total phosphorus sample data exceed 2012 WisCALM listing criteria for the fish and aquatic life use; however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
This water was assessed during the 2014 listing cycle; phosphorus sample data nearly exceeded (May Exceed) 2014 WisCALM listing thresholds for the Fish and Aquatic Life use, but biological sample data, macroinvertebrate or fish Index of Biotic Integrity (IBI), scored in the fair to excellent condition categories. Further monitoring is recommended.
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 WisCALM listing criteria for the Fish and Aquatic Life use, however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category). This water was also assessed for temperature and sample data did not exceed 2016 WisCALM listing criteria for the Fish and Aquatic Life use.
This water was assessed during the 2018 listing cycle; based on 2018 WisCALM listing criteria for the Fish and Aquatic Life use, available biological data did not indicate impairment (i.e. at least one macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category); temperature data indicate impairment. Further biological monitoring is recommended.

Assessments during the 2020 listing cycle showed new bug sample data were in fair condition.
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.
Listing Details
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Low DO, Elevated Water Temperature
Current Use
LFF - Limited Forage Fishery
Listing Status
TMDL Approved
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Not Applicable
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
543
Listing Date
4/1/2008
Impaired Water Notes
Data collected in 2007 iindicate it should also be listed for phosphorus pollution, low D.O. and temperature impairment as well. 2007 TMDL monthly sampling was conducted between April and September.

Three D.O. water quality exceedances occurred June to Sept. at both sites with D.O.s as low as 2.8. The cause of the downstream Site low D.O. appears likely (at least in part) due to a connected enlargement located between the sample sites. Phos. Levels were very high (up to 2.16 mg/l TP with a range of 0.21-2.16 mg/l for Site W1 and 0.049-0.529 for Site W2).

Summer conitinuous daily avg. TidBit temp levels for the summer were higher than expected for a cold water stream. It appears at least in part due to an in-stream connected enlargement located between Site W1 and W2. See SWIMs for all data and WATER for Use Guidance Assessment write-up (2008). Since Wurchs Cr. has much potential for cold water fish migration from Green Lake the low D.O. and temp. problems are significant and can be addressed.
Date
3/18/2010

Impaired Water Notes
New data: Impairments appear to be caused at least in part from a cattle feedlot located upstream from Luedtke Rd. Phosphorus increased with rainfall events. Low dissolved oxygen recorded in the summer of 2007 possibly partly from the same source but other Non-point sources cearly exist.
Date
4/1/2008

Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 WisCALM listing criteria for the Fish and Aquatic Life use, however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
10/5/2015

Impaired Water Notes
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.
Date
3/4/2020

 
Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Degraded Habitat
Current Use
LFF - Limited Forage Fishery
Listing Status
TMDL Approved
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Not Applicable
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
543
Listing Date
4/1/1998
Impaired Water Notes
This water is covered by the Upper Fox & Wolf River Basins TMDL, approved by the US EPA on February 27, 2020.
Date
3/4/2020