Impaired Water - Blackhawk Creek (Blackhawk Creek)
Rock County, Wisconsin
LR02
797000
2.00 - 4.00
2.00
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Blackhawk Creek has been on the states 303(d) impaired waterts list since 1998 for Total Suspended Solids. TMDL is approved.

This water was assessed during the 2018 listing cycle; new 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.
Listing Details
Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Degraded Habitat, Turbidity
Current Use
LAL - Limited Aquatic Life
Listing Status
TMDL Approved
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Not Applicable
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
52
Listing Date
4/1/1998
Impaired Water Notes
Blackhawk Creek (797000, miles 2-4) 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