WSP10444

• File Number: 8441.400
• Description: Colorado Big Thompson Project - Reports
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 8/1/1986
• Author: Colo. Water Resource
• Title: Summary Report - Preliminary Hydrologic Analysis
• Water Supply Pro - Doc Type: Report/Study

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Seqretary of Interior, Denver can store out-of-priority water in
Dillon Reservoir during' the spring snowmelt runoff season. This
out-of,..priority storage is permitted on the ccinditionthat if Green
Mountai,n Res;ervoir does; not, fill, water is released later, to
satisfy the fill requirement' of GreenMountain.Reservoir. Water
can be released either from Dillon Res,e,rvoir to flow into Green
Mountairi Reservoir, or from Williams; Fork ReserVoir' tOliteetthe
Green Mountain Reslilrvoir obligations.' Another condition was t,hat
energy lost to ' the Green Mountain Power plant b,eca1;lseof reduoeci
flbw,is replaced in kind.

On Decembe!r 22, 1983, the USBR published an operating' pOlicy fOr
Green Mountain Reservoir (Federal Register Vol. 48, N.o. 247)
December 22, 1985) with a provision that releases from the 100,000
af power pool shall be made available without charge to mee.t
natural water shortages for perfected irrigation and municipal uses
with a priority date senior to October 16, 1977. Releases for
these purposes shall nOt eXceed 66,000 af per annum. The remaining
water from the power pool is to be made, available for use on the
western Slope, through "water, sales". The amount of water sales
and the analyeis of their impact areo.escribed in the Draft Water
Marketing P,rogramEnvironmental statement iss1:J.ed in June, 1985.

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