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<br />f?l <br />",":.,:' <br /> <br />Mass diagrams indicated that, to supply the assumed demand, <br /> <br />would require reservoir capacity of about 1,300,000 aore feet. About <br /> <br />150,000 aore feet of capaoity is now oonstructed on the Rio Grande, <br /> <br />and two reservoirs sites of substantial size, which have been investigated, <br /> <br />exist on the strean, ne:mely, the Vega-Sylvestre sitel with capacity <br /> <br />of 237,000 acre feet, and the ifagon Wheel Gap Reservoir site, with a <br /> <br />capacity of approximately one million acre feet. A detailed study <br /> <br />was made to deterntine the ability of the Wagon Wheel Gap ReservOir, <br /> <br />if construoted, plus the existing reservoirs to regulate the flow of <br /> <br />the stream from 1890 to 1934 to provide the assUII1ed demand. Table <br /> <br />No.4 shows the results of the study. It may be noted that, with the <br /> <br />assumed oapacity of 1,150,000 acre feet, the draf't of 600,000 acre <br /> <br />feet per year eould have been maintained on the assumed seasonal basis <br /> <br />during every year eXGept the years 1901, 1902 and 1905, when shortages <br /> <br />of 9,000 acre feetl 375,000 &ore feet and 257,000 aere feet, respeotively, <br /> <br />would have ooeurred. Spills frolll the reservoir would have oocurred for <br /> <br />each of the years 1907 to 1929, inclusive, exoept for the two years 1919 <br /> <br />and 1925. The spills would have amounted to from a minimum of 15,000 <br /> <br />aore feet to a maximum of 383,000 aore feet. <br /> <br />-15- <br /> <br />r".~ I..~J <br />....' ... <br />