Dodge County, Wisconsin
UR12, UR13
861400
0.00 - 11.61
11.61
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
This segment of the East Branch of Rock River has been on the state's 303(d) impaired waters list since 2006 for Total Suspended Solids and Total Phosphorus. The phosphorus listing was confirmed with new data during the 2014, 2016, and 2018 cycles. This water is covered by a TMDL, placing it on the Waters In Restoration List. New water quality data reviewed in the 2024 cycle indicated no additional pollutants.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
818
Listing Date
4/1/2006
Impaired Water Notes
East Branch Rock River (861400, miles 0-11.61) is a part of the Rock River Basin and is listed as impaired for total phosphorus and 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
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
Degraded Biological Community, Low DO
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
818
Listing Date
4/1/2006
Impaired Water Notes
Based on the total phosphorus criteria excursions and the corroborating biological assessment, "degraded biological community" impairment was added to the existing impaired water listing in 2012
Date
8/1/2011
Impaired Water Notes
East Branch Rock River (861400, miles 0-11.61) is a part of the Rock River Basin and is listed as impaired for total phosphorus and 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
Impaired Water Notes
This water was assessed during the 2014 listing cycle; total phosphorus sample data overwhelmingly exceed 2014 WisCALM listing thresholds for the Fish and Aquatic Life use, however, no biological data (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scores) were available to assess biological impairment).
Date
4/1/2014
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data overwhelmingly exceeded 2016 WisCALM listing thresholds 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
9/23/2015