Rock County, Wisconsin
LR03
796400
0.00 - 7.31
7.31
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Removed temperature as an impairment in 2006 303d list changes. TMDL Approved in 2011.
This water was assessed during the 2014 listing cycle; phosphorus sample data nearly met (May Meet) 2014 WisCALM listing thresholds for the Fish and Aquatic Life use and biological sample data, macroinvertebrate or fish Index of Biotic Integrity (IBI), scores indicate possible impairment. Further monitoring is recommended.
This water was assessed during the 2018 listing cycle; new total phosphorus and biological (macroinvertebrate and fish Index of Biotic Integrity (IBI) scores) sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use.Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Degraded Habitat
Current Use
Unsupported Aquatic Life
Listing Status
TMDL Approved
Attainable Use
WWSF - Warmwater Sport Fishery
Priority
Not Applicable
Designated Use
WWSF - Warmwater Sport Fishery
303(d) ID
267
Listing Date
4/1/1998
Impaired Water Notes
Markham Creek (796400, miles 0-7.31) is a part of the Rock River Basin and is listed as impaired for sediment/total suspended solids. The Rock River Basin TMDLs for phosphorus and sediment were approved by the USEPA September 28, 2011.
Date
5/8/2012