|
<br />30 Chapter 4-Present and Future Development
<br />
<br />l\)
<br />W
<br />(0
<br />a:.
<br />
<br />irrigation water rights, It is assumed that for
<br />every 1,000 acre-feet of diversion rights
<br />purchased and used by the power company,
<br />irrigation consumptive use will decrease by
<br />500 acre-feet, There are some reasons to believe
<br />that irrigation use may not be declining by this
<br />high rate, Additional data and analysis are
<br />needed to refine these estimates, It is estimated
<br />that 18,000 acre-feet of diversion rights were
<br />used by the plants in 1990, which translates into
<br />a 9,000 acre-feet decrease in irrigation depletion,
<br />
<br />Deseret Generation and Transmission Co-op
<br />
<br />Deseret Generation and Transmission Co-op
<br />constructed a 400-MW unit east of Green River
<br />near Bonanza, Utah, Commercial operation
<br />began in 1984, Water depletion is estimated at
<br />6,000 acre-feet from the Green River, Unit 2,
<br />also 400 MW, is scheduled for operation in 1995,
<br />
<br />White River Dam
<br />
<br />Evaporation from the White River Reservoir
<br />ultimately is estimated to be 6,000 acre-feet,
<br />Completion is anticipated in 2030,
<br />
<br />Oil Shale
<br />
<br />Present planning indicates that the White River
<br />Dam and Reservoir may be capable of yielding
<br />up to 75,000 acre-feet of water annually,
<br />Projections of water use for the oil shale
<br />industry are down considerably from projections
<br />made 2 years ago, Utilization is not anticipated
<br />until after 2030,
<br />
<br />Tar Sands
<br />
<br />In November 1983, the Bureau of Land
<br />Management (BLM) issued a draft
<br />environmental impact statement describing
<br />development alternatives for special tar sand
<br />areas in Utah, Two development alternatives
<br />were presented-high commercial production
<br />resulting in 22,200 acre-feet per year and low
<br />commercial production resulting in
<br />88,295 acre-feet per year depletion by the year
<br />
<br />2005, Current estimates do not anticipate
<br />utilization until after 2030,
<br />
<br />LOWER BASIN DEPLETIONS
<br />
<br />Depletions described in this section include only
<br />those needed for Colorado River Simulation
<br />System (CRSS), The depletions are only for the
<br />mainstem of the Colorado River in the Lower
<br />Basin, Estimates of future consumptive use by
<br />Lower Basin States of mainstream Colorado
<br />River water were derived from (1) quantities
<br />recommended by the decree of the Supreme
<br />Court of the United States in Arizona v,
<br />California (March 9, 1964) and (2) lists of
<br />present perfected rights filed with the court,
<br />Rates of development have been estimated in
<br />those cases where a particular use is not yet
<br />fully developed, Certain other existing uses are
<br />presumed to be curtailed when the CAP becomes
<br />fully operational. In California, the Seven Party
<br />Agreement (August 18, 1931) also serves as a
<br />basis for estimates of future use within that
<br />State,
<br />
<br />Nevada
<br />
<br />Southern Nevada Water System
<br />
<br />The Southern Nevada Water System diverted
<br />approximately 264,000 acre-feet of Colorado
<br />River water for M&I uses and consumed about
<br />149,000 acre-feet in 1991. The project delivers
<br />water to Las Vegas Valley Water District, North
<br />Las Vegas, Henderson, Boulder City, and Nellis
<br />Air Force Base,
<br />
<br />Miscellaneous Users above Hoover Dam
<br />
<br />Other users above Hoover Dam include Basic
<br />Management Inc" Boulder City, and Lake Mead
<br />Recreation Area, Total miscellaneous uses were
<br />8,000 acre-feet in 1991.
<br />
<br />Mohave Steamplant, Southern California
<br />Edison Company
<br />
<br />A portion of the allotment for Nevada has been
<br />obtained via contractual arrangements by the
<br />
|