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<br />3.2.1 Shoshone Demand <br />The Shoshone Demand is associated with a hydroelectric project operated on the Colorado River about <br />10 miles upstream of Glenwood Springs. The power plant has a 1,250 cubic foot per second (cfs) water <br />right that was adjudicated on December 9,1907, and an additional right of 158 cfs decreed on February 7, <br />1956. The hydroelectric plant is operated by the Public Service Company of Colorado. <br /> <br />Under present water right administration, junior upstream water rights can be placed on call by the <br />Shoshone Demand whenever the flow of the Colorado River at the power plant is less than 1,408 cfs. <br />During most years, the Shoshone rights place a call on the river from mid-August through mid-April of the <br />following year. In dry years, the call is initiated earlier and may begin in early June. In critically dry years <br />such as 1977, it is possible that a Shoshone call would be exercised essentially year-round, with the <br />possible exception of a short period during snowmelt runoff. <br /> <br />A water right call originating from the Shoshone Demand can affect a significant number of water users <br />located upstream of this demand. Areas subject to a Shoshone call include the Eagle River Basin, and all <br />other areas upstream of Dotsero. <br /> <br />3.2.2 Cameo Demand <br />The Cameo Demand is comprised of several large agricultural and hydroelectric rights which divert from <br />the Colorado River near Grand Junction. The collective demand of these rights can total as much as <br />2,260 cfs during the irrigation season. During the non-irrig'ation season (typically November through <br />March), the demand is reduced to approximately 800 cfs. <br /> <br />The Cameo Demand can affect upstream water rights with an adjudication date junior to 1912. The <br />demand typically places a call in the later irrigation season, beginning in mid-July or August and extending <br />to late October. In dry years, the call may be initiated as early as late June and also may occur in portions <br />of the early irrigation season prior to snowmelt runoff (April and early May). The Cameo Demand has not <br />historically placed a call during the non-irrigation season even though substantial hydropower uses occur <br />at this time. <br /> <br />The Cameo Demand can affect all areas on or tributary to the Colorado River upstream of Grand Junction. <br />In certain geographic areas, such as the lower Roaring Fork River corridor, the Cameo call is currently the <br />only calling water right. In these areas, many junior users select to acquire augmentation water to satisfy <br />potentiai future water right calls that may be exercised by conditional water rights in the Parachute and <br />DeBeque areas. <br /> <br />3.2.3 Green Mountain Reservoir <br />Green Mountain Reservoir is located on the Blue River upstream of the town of Kremmling. This reservoir <br />is operated by the U.S. Bureau of Reclamation pursuant to an operating policy based on Senate <br />Document 80, various decrees and stipulations, and federal Reclamation laws. An important purpose of <br />the reservoir is to provide water to certain West Slope beneficiaries. In this regard, the operation of Green <br />Mountain Reservoir is an important component of water right administration for the Colorado River. <br /> <br />6 <br />