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<br />,. <br />. - <br /> <br />I) <br /> <br />{ <br /> <br />located sixteen miles southeast of Kremmling, Colorado, which was com- <br />pleted and placed in operation in May 1943. This was followed by the <br />Alva B. Adams Tunnel and Shadow Mountain Dam, both now completed. A <br />start was made on Granby reservoir in 1942, but this work was stopped <br />for the duration of the war. Construction work now in progress includes <br />Granby Dam and Dikes, Granby Pumping Plant and Canal on the Western Slope; <br />and Aspen Creek Siphon, Rams Horn Tunnel, Marys Lake and Estes Power Plants <br />and Penstocks, Prospect Mountain Tunnel, Prospect Mountain Conduit and <br />Marys Lake Dikes, Olympus Dam and Road Relocations, Horsetooth Reservoir <br />Dams (four large earth and rockfill dams), Tunnels Nos. 2, 3, 4 and 5 of <br />Horsetooth Feeder Canal, and Brush-Sterling 115 kv and Sterling-Holyoke <br />69 kv transmission lines. <br /> <br />. I <br /> <br />Other construction work completed by contract includes the follow- <br />ing: .:i 49-rnile transmission line ,from Green Mountain Dam to the west <br />portal of the Alva B. Adams Tunnel; a 30-mile transmission line from <br />Loveland to the east portal of the Alva B. Adams Tunnel; a. B5.9-mile <br />transmission line from Greeley to Fort Morgan with extensions to Wiggins, <br />BrUSh, and Prospect Valley; Shadovl kountain Camp, located four miles <br />southwest of Grand Lake; and the Estes Park project headquarters, lo- <br />cated one-half mile southeast of Estes Park, Colorado. <br /> <br />The follmving construction work has been accomplished with Govern- <br />ment forces: Green Mountain Camp; a 27-mile transmission line from <br />Dillon (connecting with the line of the Public Service Company of Colo- <br />rado) to Green Mountain Darn; a telephone line from Kremmling to Green <br />Mountain Dam; and substations at Dillon, Green Mountain Dam, Troublesome, <br />Hot Sulphur Springs, Granby, Shadow Mountain Ca$~, at .both portals of the <br />Alva B. Adams Tunnel, Estes Park, Prospect Valley, Yiggins, Brush, Fort <br />Morgan, and the Greeley and Poudre Valley substations, both at Greeley, <br />Colorado. Colorado River improvements have,been started and will be ad- <br />vanced henceforth. <br /> <br />Alva B. Adams Tunnel <br /> <br />n,e 13.07 mile A1 va B. Adams Tunnel will divert water from the wes- <br />tern slope ~der the Continental Divide and Rocky I~untain National Park <br />to the eastern slope. The tunne~ section is circular, 9.75 feet in di- <br />ameter inside the lining. This tunnel is the longest in the United States <br />to be driven from two headings. It will have a desifned capacity of 550 <br />second-feet. The designed slope of .00155 results in a difference in ele- <br />vation between the portals of 107 feet. The principal items of work in- <br />volved in the construction of this feature were the excavation of approxi- <br />mately 309,000 cubic yards of materials and the placing of approximately <br />125,000 cubic yards of concrete. <br /> <br />'rhe west tunnel portal at the in1et end will be connected with Grand <br />Lake by a gate control structure constructed so that the water from Grand <br />Lake vall be taken at a depth varying from 7.5 to 8.5 feet below the water <br />surface, to eliminate ice obstructions, and discourage entry of fish. <br />Construction work on the Adams Tunnel was stopped once, and curtailed sev- <br />eral times, during World War. II, but each time resum~d to enable water to be <br /> <br />3 <br />