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<br />:") <br /> <br />N <br />"..... <br />e.o <br />...J <br /> <br />.> <br /> <br />165 <br /> <br />The computations performed in assigning values to the depletion <br /> <br />control variables are presented in sections 5.5.1.1 to 5.5.1.8 <br /> <br />The values obtained for each depletion level are given in <br /> <br />Tables 5.5 through 5.8 on the pages which follow. <br /> <br />Depletions are <br /> <br />summarized in Table 5.9 by both tributary sub-basin and state. Control <br /> <br />variable adjustments corresponding to the implementation of salinity <br /> <br />control projects are presented in Section 5.5.1.9 and Table 5.10. <br /> <br />5.5.1.1 Water Exports <br /> <br />Water exports on a project by project basis from each tri- <br /> <br />butary sub-basin for the base-line conditions are taken from the <br /> <br />Comprehensive Framework Study (1971; Table 2, p. 24); see Tables 5.5 <br /> <br />through 5.9. Exports at a higher level of depletion are taken from <br /> <br />USBR (1971b) and from Ribbens and Wilson (1973; Tables IX and X). <br /> <br />For instances in which annual quantities must be broken <br /> <br />down into monthly values, the monthly pattern of current exports is <br /> <br />used. An examination of USGS Water Supply Papers (WSP No. 2124 and <br /> <br />2125) reveals that for the period 1966 to 1970 approximately <br /> <br />65 ~ 5% of the water exported annually was uniformly distributed <br /> <br />over the twelve months of the year. The remaining 35% of the annual <br /> <br />export was distributed over the April to July growing season. <br /> <br />In distributing annual values of exports over the months of <br /> <br />the year, 65% of the total is distributed uniformly. The remaining <br /> <br />35% is distributed over the months of the growing season in the <br /> <br />percentages given in Table 2.1. <br />