Exceptional Resource Waters have excellent water quality and valued fisher-
ies but already receive wastewater discharges or may receive future dis-
charges necessary to correct environmental or public health problems. This
classification includes trout stream segments not classified as Outstanding
Resource Waters.
The results of the application of the analysis of water use objectives for
selected streams and for major lakes in the Region are graphically summarized on
Map 11-2 and are summarized below.
Streams: Of the seven water use objective combinations, only the three provid-
ing for the three highest biological uses, combined with the full recreational
use, are fully compatible with the national goal of "fishable and swimmable"
waters.   Of the 1,223 stream miles analyzed in the updated planning program,
1,066 miles, or 87 percent, fall into one of these three categories: including
86 miles, or 7 percent, in the coldwater fishery, full recreational use catego-
ry; 868 miles, or 71 percent, in the warmwater sport fishery, full recreational
use category; and 112 miles, or 9 percent, in the warmwater forage fishery, full
recreational use category. The remaining 157 stream miles, or about 13 per-
cent, would not meet the national goal of "fishable and swimmable waters".
These stream miles generally have excessive bacterial or nutrient levels which
cannot as a practical matter be sufficiently reduced; or which have been signif-
icantly and permanently altered through concrete channelization; or have other
physical alterations which limit their potential recreational use. Of these 157
stream miles, 59 miles, or 5 percent, have been placed into the warmwater sport
fish and limited recreational use category; 27 stream miles, or 2 percent, have
been placed into the warmwater forage fish and limited recreational use catego-
ry; 35 stream miles, or 3 percent, have been placed into the limited forage fish
and limited recreational use category; and 34 stream miles, or 3 percent, have
been placed into the limited aquatic life and limited recreational use category.
The 1,223-mile stream network identified above does not include the Lake Michi-
gan estuary portions of any of the regional streams that drain to Lake Michigan,
except for the Milwaukee Harbor estuary which was included in the regional water
quality management plan by means of a special estuary study completed in 1987.2
No specific water use objectives for the remaining estuary reaches were assigned
under the areawide water quality management planning program. Because of the
complexity of the estuaries, it is envisioned that supplemental estuary studies
will have to be undertaken to fully assess the water quality related problems of
these estuaries and to intelligently assign appropriate water use objectives to
all the estuaries.
Within Southeastern Wisconsin, Bluff, Potawatomi, and Van Slyke Creeks, all in
Walworth County, totaling 5.0 stream miles, or 0.4 percent of all the perennial
stream miles within the Region, are currently classified as Outstanding Resource
Waters. The East Branch of the Milwaukee River from the Long Lake outlet to STH
28 in Washington County; and, Genesee Creek above STH 59, the Mukwonago River
from Eagle Springs Lake to Upper Phantom Lake, and the Oconomowoc River below
North Lake to Okauchee Lake, all in Waukesha County, totaling 21.4 miles, or
2SEWRPC Planning Report No. 37, A Water Resources Management Plan for the
Milwaukee Harbor Estuary; Volume One, Inventory Findings; Volume Two, Alterna-
tive and Recommended Plans; December 1987.

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