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<br />. <br /> <br /><, <br /> <br />the irrigation requirement. <br /> <br />On Drawing SLv-48 are indicated the April,May, and June <br />water supply for each of the years 1890 to 1938, inclu- <br />sive, and the present irrigation demand upon tw.t water <br />supply for those three months. The mean water supply <br />for the three months for the 49-year period was 411,000 <br />acre-feet. The demand upon that water supply is 322,500 <br />acre-feet. It may be noted from the drawing that during <br />34 years of the 49-year period the water supply for the <br />months of April, May, and June was in .excess of the as- <br />sumed demand. <br /> <br />, <br /> <br />The situation is much different with respect to the <br />months of July and August. On Drawing SLv-49 is indi- <br />cated the water supply for those two months for each of <br />the years 1890 to 1938, inclusive, together with the ir- <br />rigation demand upon that water supply. It may be noted <br />that the mean water supply for the 49-year period for the <br />combined months of July and August was 143,100 acre-feet. <br />The net irrigation demand on the water supply at Del Norte <br />for those two months is 262,000 acre-feet. This indicates <br />a mean annual late season deficiency in water supply of <br />119,000 acre-feet. In only one year, 1907. did the run- <br />off of July and August exceed the present demand. <br /> <br />Summarizing: Sufficient water passes Del Norte, if pro- <br />perly regulated by reservoirs, to take care of the re- <br />~Jirement of 670,000 acre-feet between Del Norte and <br />Alamo sa. Regulation means the capture of surplus \mter <br />during the period of high run-off and during the wintor <br />season, and the carrying over of this water to be released <br />to take care of the demand during the periods of water de- <br />ficiency. It me~ns also the capture of surplus water dur- <br />ing the months of April, May, und June, to be released to <br />supply deficiencies during the months of July and August. <br /> <br />Adequacy of Proposed Project <br /> <br />A <br /> <br />A reservoir at Wagon ~fueel Gap, with a capacity of one <br />million acre-feet, will regulate the supply in such a <br />way as to take care of the 670,000 acre-foot require- <br />ment for all years for such a period as 1890 to 1938,ex- <br />cept the years 1896, 1900, 1901, 1902, and 1904, ?-Ild the <br />shortages in those years would be nnterially reduced. <br /> <br />i. <br /> <br />6 <br /> <br />1776 <br />