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<br />i{~;i~ <br /> <br />Errect or Reservoir Development in the San Luis Valley on the <br />Water Supply ror the Lands under the Elephant Butte Reservoir <br /> <br />Table No. 5 shows the water supply or the Rio Grande at Alamosa <br /> <br />under various assumed conditions. Column No.2 indicates the supply rrom <br /> <br />1890 to 1934 under present conditions of development in the San Luis <br /> <br />Valley. Column No.3 indicates the estimated supply at Alamosa under the <br /> <br />above asscMed reservoir operation. The value ror each year represents <br /> <br />the non-storable Novmnber to March flow, occurring below the site or the <br /> <br />Wagon Wheel Gap Reservoir, the spills during the summer months, when any <br /> <br />would occur, and 50,000 acre feet to represent estimated flow to the <br /> <br />stream without fUrther drainage development, on the assumption that <br /> <br />600,000 aore reet would be available for diversion eaoh year. Values in <br /> <br />Column 4 represent the indicated difrerences between the flow or the <br /> <br />river at Alamosa, under present conditions, and under the assumed <br /> <br />reservoir development. The values in Column 5 represent the cumulative <br /> <br />differences. <br /> <br />Column No.6 represents the oumulative differences between <br /> <br />the flow under present oonditions, and under the proposed reservoir <br /> <br />development, assuming an additional 50,000 aore reet to be reoovered <br /> <br />by drainage construotion, either through oonstruotion or the Sump Drain <br /> <br />or otherwise. It may be noted that the mean annual depletion an the <br /> <br />latter assumption would be approximately 15,000 acre reet, but that <br /> <br />there would be an inoreasing oumulative depletion year by year, until <br /> <br />the period or high water supply, when spills would result. In order <br /> <br />-17- <br /> <br />- - <br />! <br />'.' '. <br /> <br />r. .:' ) <br />(....J ~ <br />