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<br />------""---- -------- ----.---------..-------------.----- ----.-.---- - -------------=-'- <br /> <br />The in-basin demands for the present level of irrigation, municipal and industrial use in the <br />basin were estimated based on evaluation of the historic diversion records for ditches and <br />structures having entitlements of 5,0 cfs and larger, Recorded diversions for the entire 33-year <br />study period were first compared with the associated decreed water rights, Major discrepancies <br />between the listings were resolved, Where the diversion records were incomplete, the beginning <br />years of diversion were assumed on the basis of the decreed dates of appropriation for the rights. <br />Incomplete diversion records were extended or filled in by comparison with the available portions of <br />the diversion record and by correlation with other diversions, Finally, to resolve inconsistencies, the <br />aggregate of the adjusted diversion records for each basin was compared with the consumptive-use <br />estimates prepared by the USBR (USBR, 1963-1982), <br /> <br />-.: <br /> <br />-' <br /> <br />-- <br /> <br />Table 3,2 shows the estimated present level of irrigation demands in the Colorado River <br />Basin above Cameo for the major segments of the basin, Also shown on Table 3.2 are the average <br />irrigation efficiencies, These efficiencies represent the amounts of crop consumptive use as a <br />percent of the diversions, The average annual use of water for irrigation in the Colorado River Basin <br />above Cameo has not changed significantly over the 33-year study period, <br /> <br />-.: <br /> <br />......; <br /> <br />I <br />c-' <br /> <br />~ <br /> <br />'-- <br /> <br />,-' <br /> <br />3-8 <br />