1006

• UCREFRP Catalog Number: 1006
• Author: Resource Consultants, I.
• Title: Biological Assessment Green Mountain Reservoir Water Marketing Program.
• USFW Year: 1985.
• USFW - Doc Type: Denver.
• Copyright Material: NO

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DESCRIPTION OF THE ALTERNATIVES

Introduction
Green Mountain Reservoir is strategically located as a source of
water for augmentation purposes. The reservoir is located geographi-
cally above the two major senior downstream water rights that effec-
tively control the administration of the Colorado River upstream of the
confluence of the Colorado River and Gunnison River. These two major
water rights are the Shoshone Power Plant located in Glenwood Canyon and
operated by Pub1 ic Service Company of Colorado, and a number of Grand
Valley irrigation water rights, collectively referred to as the Cameo
call. The Shoshone Power P1 ant has a water right with an appropriation
date of 1903 for 1250 cfs. The Cameo call is made up of a number of
different water rights all with senior appropriation dates (before
1920). The total volume of their call is approximately 2200 cfs.
In general, Green Mountain water releases are used to replace water
diversions when one of these senior water rights is placing a call on
the river. Water users located above Dillon Reservoir in SUll1llit County
must provide augmentation water for Denver's Dillon Reservoir and
Roberts Tunnel diversion system in addition to the downstream Shoshone
and Cameo calls. Water users below Glenwood Canyon need only provide
water for the downstream Cameo calls and other downstream calls that may
be perfected.
If long-term contracts from Green Mountain water sales are not
available, each entity would be required to turn to either interim Green
Mountain contracts or other sources of water for augmentation purposes
or curtail their present or future water use.

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