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<br />D. A Closer Examination of Critical Variables <br /> <br />1. Virgin Flows at Lee Ferry <br /> <br />a. Virgin Flows of Colorado River at Lee Ferry: <br />1896-1980. Progressive 10 year average annual <br />flow: 15.0 MAF/yr. <br /> <br />2&=- <br />24- <br /> <br />22- HISTORIC <br />20- FLOW <br />tu1S- <br />w <br />:; 16- _ n <br />514- <br />< <br />Z12- <br />o <br />310-, <br />:is- <br /> <br />&- <br />4- <br />2- <br />0- <br />~ 8 <br />co 0> <br />.... ... <br /> <br />VIRGIN <br />FLOW <br /> <br />AVERAGE <br />VIRGIN FLOW <br /> <br />PAST DEPLETION <br />PLUS CRSP STORAGE <br /> <br />I' <br />iI ;: <br /> <br />I i I <br /> <br />n <br /> <br />,~ <br /> <br /> <br />I <br /> <br />! I I "I ~ I ! <br />r II ~ I n 11, i <br />I I I' II J I ~I <br /> <br /> <br />PROGRESSIVE 10 YEAR <br />AVERAGE OF VIRGIN FLOW <br />(Plotted at end of year) <br /> <br />n I~ <br />'" <br /> <br />~n/ <br />" 'I j rl II ." <br />-r- . ~ lr "- <br />,,- - <br />I <br /> <br />JI~ <br /> <br />1"'- :I i <br />:! <br /> <br />n=~ <br /> <br />," <br /> <br />~ <br />:1 <br /> <br />d n <br /> <br />n <br /> <br />, II <br /> <br />!! <br /> <br />o <br />... <br />en <br />... <br /> <br />o <br />(\I <br />CD <br />.... <br /> <br />o <br />C') <br />en <br />.... <br /> <br />o <br />V <br />0) <br />.... <br /> <br />o <br />10 <br />CD <br />.... <br /> <br />g <br />en <br />.... <br /> <br />o <br />...... ~ <br />en <br />.... <br /> <br />WATER YEAR <br /> <br />SOURCE: Uppet CoIOtaGo RIYer.Commlsslon, Thirtielh Annual Re1H1.'" Sail Lake City, Ulah. Sept. 30, 1978, P 44 <br /> <br />b. <br /> <br />Virgin Flows of the Colorado River: lSOO-l960 <br />(based on statistical analysis of tree rings). <br />Long-term average annual f 10\J: 13.5 MAF /yr. <br /> <br />."1{ . <br /> <br />10'. 023:06 , <br />COl.QIIAQO .IV~ At. Ltc ,eMr. ARllcr4l-RtcO!<SrRUCreo ~ _'.""...THf....ATICAUY.suoorHfIl <br /> <br />.. <br />i <br />, <br />: V <br />". <br />~ <br />J _ <br /> <br />-~-,--~-------__M.__~__~~~~~_________~_________ <br /> <br /> <br />-9- <br />