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WSP05782
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Last modified
1/26/2010 2:19:52 PM
Creation date
10/12/2006 1:16:52 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8449.913
Description
Platte River Basin-Miscellaneous Small Projects and Project Studies-Windy Gap/Foothills
State
CO
Basin
South Platte
Water Division
1
Date
1/1/1970
Title
Foothills Project-Board of Denver Water Commissioners Annual Report to Consumers
Water Supply Pro - Doc Type
Report/Study
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<br /> <br />A great moment! The "hole-through" and the <br />world has a new engineering wonder-the <br />23.3 mile-long Harold D. Roberts Tunnel! <br /> <br />Building the tunnel was a huge task: This <br />picture shows subterranean water surging into <br />the bore through drill holes at several hun- <br />dred pounds pressure-just one of many <br />hazards and severe problems that had to be <br />overcome during construction. <br /> <br />In 1956, a combination of six large private construction firms <br />successfully bid to complete the Harold D. Roberts TunneL By 1962, <br />the world's longest major underground tunnel was complete with full <br />concrete lining of the bore. The Robert's Tunnel was a tremendous <br />accomplishment from many standpoints, not the least of which was <br />the surveying. Plotting the course of a 23.3 mile tunnel to be punched <br />through a rugged 13,000 foot mountain range and maintaining proper <br />alignment of the bore during construction, as deep as 5,000 feet below <br />surface, was a nightmarish task. Engineering and construction prob- <br />lems met during the tunneling included huge areas of unstable rock <br />pressing to close the tunnel as fast as it could be drilled and sub- <br />terranean water at pressures up to 1,000 pounds per square inch trying <br />to flood out the project. <br /> <br />Late in 1959, work got underway on Dillon Dam and Reservoir. <br />This part of the Blue River Diversion System was completed in 1963, <br />With a capacity of over a quarter million acre feet, Dillon Reservoir <br /> <br />10 <br /> <br /> <br />Part of the Blue River Project was moving a town whose former si <br />would lie at the bottom of Dillon Reservoir. This chwTh is on tl <br />way to the attractive new town of DHlon. <br /> <br />virtually doubled storage volume of the Denver water system. By 1964, <br />Blue River water was flowing from Dillon Reservoir through the Rob- <br />erts Tunnel and into Denver via the North Fork of the South Platte <br />River. <br /> <br />As an extra benefit to its purpose as a key facility of the Denver <br />water system, Dillon Reservoir ranks as one of Colorado's major <br />recreation areas. Campgrounds, picnic areas and other recreation <br />facilities already completed or to be built by the United States Forest <br />Service at a cost of $1.5 million rank among the finest in America.' <br />To process Denver's new Blue River water supply, facilities have <br />been increased substantially at the Marston Lake water treatment <br />complex. An addition to the plant was built in 1962 to process 60 <br />million gallons of water per day, and in 1967 the new Marston Water <br />Treatment Plant was completed. <br /> <br />-Holders of the Gold(.'ll Eagle Passport to Federal Recreation Areas are entitled to use <br />Dillon campgrounds without chan::e. To others. the Forest Service charges a daily fee of <br />$1.00 per car. Fishing is free to the public. <br /> <br />.... <br /> <br />
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