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<br />00299?
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<br />Releases from Lake Gr'lnby to satisfy [ish requirements were established by the
<br />Secretary of Interior Oil ,J:lIlLl:lry 1 n, 10(a. A r~lcase from Ln.ke Granby of 20
<br />~.f.s. is required from October 1 until AP1'i1 :JOofenchycar. Duringthe remain-
<br />inp; months of lh~ YC:lr, th~ control point is almost ;1 miles downstream from the
<br />dam. Although the seepa!!;e from Gran"y Dam :,nd some inflow from tributaries
<br />enter the strdch of stream, there :1rC :1Iso diversions for several irrigation
<br />ditchcs between GrnnllY D:\I11 and the control point. Except in years of subnormal
<br />inflow, 110ws of 7:; c. f. s. durinp; the M:ly-June period, ~O c. f. s. during August,
<br />and 20 Co f. s. durin[!; September are required :It this point. The flow during the
<br />May-September pel'iod can be reduced if foree:lsts indiente that the inflow during
<br />the \\'nter ye:lr to Shadow Mountain L:iI,c. Cr:llHI Lake, and Lake Granby Reser-
<br />,.oirs (less the decreed rigllts in the re:leh of tlH' Colorado Rivcrbetween Granby
<br />D:lrn :llld the mouth of the Fraser River), and the wnter capable of being pumped
<br />from Willow Creek Reservoir in that yenr is 2:30,000 acre-feet or less. . The
<br />following' reductions in fishery flow will apply on the basis of a forecast to be
<br />made by the Bureau of Reclamation, using. information for all available sources,
<br />during the last week in April.
<br />
<br />Forecast Inflow
<br />In Acre-feet
<br />
<br />Percentage Reduction
<br />In Minimum Release.
<br />
<br />';fi/j
<br />
<br />220,000 - 230, 000
<br />210,000 - 220,000
<br />195,000 - 210,000
<br />Less than 195,000
<br />
<br />15
<br />20
<br />25
<br />30
<br />
<br />Adjustments will be made in the reductions when appropriate, based on revised
<br />forecnsts and consideration of actual flows during May, June, and July.
<br />
<br />Willow Creek below Willow Creek Reservoir is not conSidered as a fishery
<br />resource since an irrigation ditch a short distance below the dam generally uses
<br />the entire flow in the late summer months. In the Secretarial Determination, no
<br />releases were provided to maintain Willow Creek as a live stream. However, a
<br />release of 7 c. f. s. or inflow, whichever is the lesser, from Willow Creek Reser-
<br />voir is required during the October 1 - April 30 period to augment fishery flows
<br />in the Colorado River.
<br />
<br />A minimum release of 25 c. f. s. from October 1 to May 31 and 50 c. f. s. from
<br />June 1 to September 3D, or inflow, whichever is the lesser, is made from Shadow
<br />Mountain Lake to maintain fish and wildlife in the Colorado River above Lake
<br />Granby.
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