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<br /> <br />,'.< ~ <br /> <br />C> <br /><:) <br />" <br />~ COLORADO-BIG THOMPSON PROJECT <br />CJl <br />-...1 Summary Sheets <br /> <br />LOCATION: state of Colorado, in Boulder, Grand, Larimer,Logan, <br />Morgan, Sedgwick, Summit, Washington, and Weld Counties, <br />Region 7. <br /> <br />AUTHORIZED: August 9, 1937 - Interior Department Appropriation Act <br />(50 Stat. 595). <br /> <br />December 21, 1937 - Finding of feasibility approved by <br />the President in accO:'rdance with the plan outlined in <br />Senate Document No. 80, 75th Congress, 1st session. <br /> <br />L~~ <br /> <br />The primary purpose of the Colorado-Big Thompson Proj ect is <br />to supplement the water supply in an area containing about <br />707,710 acres of irrigated land in northeastern Colorado. The <br />secondary purpose is to utilize the power potential of the water <br />as it drops approximately 2,800 feet between the Pda:lls Tunnel and <br />the Foothills Storage System. The general plan for operation of <br />the project is as follows: Surplus water originating on the <br />headwaters of the Colorado River on the Western Slope is collected <br />and stored in Granby Reservoir. By means of Granby Pumping plant <br />and the Granby Pump Canal, water is delivered to Shadow Mountain <br />Lake--an extension of Grand Lake from which the water flows by <br />gravity through the Alva B. Adams Tunnel under the Continental <br />Divide. On the Eastern Slope it passes through a series of <br />conduits and power plants en route to storage in Horsetooth and <br />Carter Lake Reservoirs. During the irrigation season, water <br />will be released to the Cache la Poudre, Big Thompson, Little <br />Thompson, St. Vrain, Boulder, and South platte streams for use <br />by existing irrigation canal systems. The project plan includes <br />hydroelectric plants with an installed capacity of 177,650 <br />kilowatts, exclusive of the 6,700 kilowatt generating capacity <br />of the Flatiron Pumping plant unit, appurtenant switchyards, <br />transmission lines, and substations to deliver energy to the <br />power market area. The project plan also includes replacement <br />facili ties to safeguard water users along the Colorado River <br />in Colorado against infringement on their rights by proj ect <br />diversions to the Eastern Slope. Repayment of that portion <br />of the reimbursable costs to: be paid by the water users is <br />scheduled to be compl.et..d. in I~Q years. Net r<wenu"" from.. thEl <br /> <br />1 <br /> <br /> <br />";.' <br /> <br /> <br />","-., <br /> <br />