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<br />.?I <br /> <br />OJJ515 <br /> <br />December 17, 1997 <br />DRAFT <br /> <br />Background Statement <br /> <br />o California's current consumptive use of Colorado River water is <br /> <br />approximately 5.2 million acre-feet (MAF) per year, while its mainstream <br /> <br />basic apportionment is 4.4 MAF per year, plus one-half of any available <br /> <br />surplus water. <br /> <br />o Within California's 4.4 MAF basic apportionment, the agricultural agencies <br /> <br />have the first three priorities, not to exceed a total of 3.85 MAF, and the <br /> <br />Metropolitan Water District of Southern California (MWD) has the fourth <br /> <br />priority of 550,000 acre-feet. Above California's basic apportionment, MWD <br /> <br />has the fifth priority of 662,000 acre-feet, the agricultural agencies have the <br /> <br />sixth priority of 300,000 acre-feet, and several of the California agencies <br /> <br />have contracts to divert surplus water, when it is available. <br /> <br />o Indian Tribes and Miscellaneous Present Perfected Right holders within <br /> <br />California, which are not identified in California's Seven-Party Agreement, <br /> <br />have the right to divert up to approximately 85,000 acre-feet per year, which <br /> <br />equates to about 50,000 acre-feet of consumptive use within California's 4.4 <br /> <br />MAF basic apportionment. These users are presently consuming <br /> <br />approximately 32,000 acre-feet a year (assuming about 25,000 acre-feet of <br /> <br />unmeasured return flow). <br /> <br />o Arizona and Nevada are approaching full use of their mainstream basic <br /> <br />apportionments of 2.8 MAF and 300,000 acre-feet, respectively. Thus, <br /> <br />cL 144p1rv17.wpd <br /> <br />2 <br />