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<br />28 <br /> <br />could be watere~ for annual allocations varying from 1.6 to 6.0 acre-feet per acre <br /> <br />for water supplies varying from 1,200,000 to 2,500,000 acre-feet. Figure 10 (p. 47) <br /> <br />presents curves from which any one of these items can be determined from selected <br /> <br />values of the other two. These curves can assist in a study of various combinations <br /> <br />of land, water and duty. It should be remembered that the water going to the land <br /> <br />is only 95 percent of required supply and that 60,000 acre-feet will be used for <br /> <br />domestic purposes. <br /> <br />Physical Solution <br /> <br />Several plans have been offered, and other plans probably should be considered, <br /> <br />for the physical solution of the Valley water problems. These plans provide for: <br /> <br />(1) all acres to share equall;v; (2) allotments to be made by priorities; and <br />(3) a combination of these two plans. <br /> <br />Under plan (1), all acres would share equal1y: (a) to the extent of available <br /> <br />water, or (b) to a limited amount each year. Under plan (2) priorities would. be <br /> <br />assigned according to date of "water right". Under :pJ.an (3) a varying base allot- <br />ment w0uld be given to all acres, with those of>;f~:tls~ll:r~or:j.ty getting the greater <br /> <br />base amount; all water in excess of the base would be allotted equal1y to all <br /> <br />acres. Discussions of these methods are given below, <br /> <br />These computations have been made for the period 1945-64, as it is believed <br /> <br />this period better represents what may be expected in the future. It was assumed <br /> <br />there would have been no carry over water from 1944, which causes computations for <br /> <br />first few years to be lower than they probably should be. Also, the period contains <br /> <br />the most severe drought on record, and nothing has been added as additional supply <br /> <br />resulting from construction of Amistad Dam. All of these factors would tend to <br /> <br />increase the available water over what is shown in following tables. <br /> <br />All acres share equally <br /> <br />One plan of operation would allot all water avail- <br /> <br />able each year equall;v to all acres. Table 18 shows: (1) acre-feet per acre <br /> <br />that would have been allotted each year, 1945-64, if water limited to 550,000, <br /> <br />'" r... h <br />V '_' t:,,, <. <br />