investigations indicated that during 1990 and 1991 none of the streams in the
Upper Fox River watershed fully met the recommended water use objectives. Based
upon a review of the data summarized in Figures V-1 through V-10 and in Table V-
14, and upon review of the water quality sampling and water quality simulation
data developed in the initial plan and the status of plan implementation, it is
likely that violations of the fecal coliform and phosphorus standards also occur
along the entire main stem of the Fox River and the recommended water use objec-
tives continue to be partially met in the majority of the major streams in the
watershed. However, the recommended water, use objectives are likely to be met
in the Mukwonago River where the only significant source of pollution which
existed in 1975--the Village of Mukwonago sewage treatment plant discharge--has
been removed and now discharges to the Fox River downstream of the Mukwonago
River.   In addition, Genesee, Spring, Potawatomi, Van Slyke, Southwick, and
Palmer Creeks may also potentially be meeting the water use objectives based
upon the observed uses in those streams.      It is also expected that selected
tributaries of the Middle and Lower Fox subwatersheds may largely meet the
standards associated with the recommended water use objectives.
There are currently three stream reaches for which the water use objectives set
forth herein are higher than the objectives set forth in Chapter NR 104 of the
Wisconsin Administrative Code.     These include Eagle Creek, Deer Creek, and
Poplar Creek. Chapter NR 104 classifies portions of Poplar and Eagle Creeks as
capable of supporting limited forage fish communities and Deer Creek and the
remaining portions of Poplar and Eagle Creeks as capable of supporting only
limited aquatic life communities, while the objectives set forth herein recom-
mend a warmwater sport fish objective for all three streams. Under the Upper
Fox River Priority Watershed Planning Program, the necessary stream appraisals
have been conducted by the DNR staff to support upgrading the objectives for
Deer Creek and Poplar Creek. It is recommended that a stream appraisal to
further assess the potential for a higher use objective be conducted for Eagle
Creek.   It is further recommended that a stream appraisal to evaluate the
potential for a higher use objective be conducted for Sussex Creek, due to the
recording of Sculpins, a coldwater species, in the creek.       Sussex Creek is
currently recommended for warmwater forage fish.    These stream appraisals are
recommended to be part of the next one-year monitoring period envisioned to be
carried out in the Fox River watershed.
The waters of the lakes in the Fox River watershed--excepting Lakes Geneva,
Echo, Kee Nong Go Mong, and the Waterford Impoundment--are recommended for the
maintenance of a warmwater sport fishery and full recreational use.   Geneva Lake
is recommended for maintenance of coldwater sport fish and full recreational
use. Echo Lake, Lake Kee Nong Go Mong, and the Waterford Impoundment--only the
Buena Lake portion--are recommended for maintenance of a warmwater sport fishery
and limited recreational use as a result of high levels of fecal coliform or
total phosphorus.  In addition, as discussed in Chapter II, special designation
as "Outstanding Resource Waters" has been given to Lulu Lake in Walworth County
and Spring Lake in Waukesha County. All of the lakes for which water quality
data were available between 1965 and 1975, except for Booth and Browns Lakes,
violated the standards for total phosphorus of 0.02 mg/l recommended by the
Commission. Pleasant and Silver (Walworth County) Lakes were also estimated to
meet the standard based upon modeling data developed in the initial plan. In
addition, over half of the lakes for which data were available during this peri-
od--13, or 59 percent--violated the dissolved oxygen standard on at least one
occasion between 1965 and 1975.

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