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Show PROBLEMS OF IMPERIAL VALLEY AND VICINITY. 27 about 35 miles to keep above the flow line of. the reservoir. Another plan is to connect with the main line of the Salt Lake route further west, at or near Las Vegas, Nev., distant about 40 miles. Both of these lines reach Boulder Canyon from the north. The other possibility is to connect with the Santa Fe at Chloride, Ariz., the end of a 20-mile branch line which leaves the main line at Mc-Connor Junction, Ariz. From Chloride to the south rim of Boulder Canyon is about 50 miles. Further investigation is needed to decide which location is most feasible. CAMP SITES. 22. The adoption of either of the railroad lines already mentioned will in a measure affect the location of a camp site. The size of the job, the broken character of the country, and the climate, make the location of a camp an important feature. Preferably the location should be one which will not be submerged and within easy reach of the work. While an ideal location may not be available there are several feasible ways of meeting the situation for housing, shops, storehouses, and yard room. COST. 23. A preliminary estimate of quantities shows that the following yardage of concrete will be required in the main body of the dam for the two alternative reservoirs: Cubic yards. 26,500,000 acre-foot reservoir........................................... 2, 800,000 31,400,000 acre-foot reservoir........................................... 3, 500,000 Following is the total estimated cost of the dam, including right of way, railroad, camp, construction plant, river-diversion works, spillway, outlet works, and other minor features, together with the power house and transmission lines: With 26,500,000 acre-foot reservoir: Dam............................................................ $50,000,000 Power plant.................................................... 22,000, 000 Transmission line............................................... 18,000,000 Total...........................,............................. 90,000,000 With 31,400,000 acre-foot reservoir: Dam........................................................... 55,000,000 Power plant..................................................... 25,000,000 Transmission line................................................ 20,000, 000 Total......................................................... 100,000,000 In these figures a liberal allowance has been made for contingencies. With favorable conditions during the construction period the actual cost may be somewhat less than this estimate. CONCLUSIONS. 24. From the facts given above and from studies of probable cost and revenues, we believe that the Boulder Canyon dam for the combined purposes of flood control, irrigation storage, and power development is physically practicable and financially feasible. 25. On account of the great construction problems involved in this unprecedentedly high dam, it is advisable to secure all possible in- |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : |