Impaired Water - Unnamed (Jockey Hollow Creek)
Green, Lafayette County, Wisconsin
SP03
899500
0.00 - 3.10
3.10
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
On 2006 303d list, TMDL approved 2005.
This two-mile stream originates in western Green County and flows westward where it feeds into Trotter Branch just
inside the Lafayette County line. The stream is on the state's list of impaired waters because it suffers from poor
habitat, low flow, channel straightening, and sediment is the primary non-point source pollutant. Sampling conducted
in 1985 and 1990 showed only the presence of brook stickleback. The stream has the potential to be a warm water
forage fishery, but currently supports limited forage fish. It has not been monitored in recent years.
Listing Details
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
WWFF - Warmwater Forage Fishery
Priority
Not Applicable
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
206
Listing Date
4/1/1998
Impaired Water Notes
This very small stream originates in western Green County and flows westward where it feeds into Trotter Branch just inside the Lafayette County line. The stream is on the state’s list of impaired waters because it suffers from poor habitat, low flow and channel straightening. Sampling conducting in 1985 and 1990 showed only the presence of brook stickleback (Marshall, 1991).

Surveys conducted in 2007 and 2008 at Jordan-Wiota Road and Duncan Hollow Road, respectively, continued to show a dearth of fish. For the most part, the stream flows mainly through a box elder corridor. This leads to bank slumping and erosion causing the stream to become wide, shallow, and lacking in habitat. The upper portions of the stream do contain some gravel riffle areas. Macroinvertebrates, dominated by Gammarus pseudolimnaeus, show good water quality from an organic loading standpoint. The macroinvertebrate IBI showed very poor indications of habitat/land use in the upper sections and good in the lower section. This is not consistent with biologist’s observations. Because of low flow, and possibly cool temperatures, the stream will always be limited in the number and diversity of fish it can support. However, habitat continues to be a limiting factor to this stream achieving its potential.
Date
3/27/2010

Impaired Water Notes
Jockey Hollow Creek (899500, miles 0-3.1) is part of the Sugar-Pecatonica River Basin and the sediment TMDLs were approved by the USEPA August 24, 2005.
Date
4/25/2005