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<br />Figure 9, The relation between stage change and high-elevation thickness change in Marble Canyon, <br />The stage chan~e is based on the elevation difference from 566 to 878 m3/s (1997 Test Flow) and from <br />566 to 1,274 m /s (1996 Controlled Flood) at each study site, Note that thickness change was <br />positively correlated to the magnitude of stage change (1=0.59, significant at the 95% confidence <br />level) during the 1996 Controlled Flood, whereas there was no significant correlation as a result of the <br />1997 Test Flow. <br /> <br /> 1.0 <br /> -G- Marble Canyon <br />.s ............ Upper Grand C. <br />0.8 <br />'" <br />0 <br />a. <br />"' 0,6 <br />Cl <br /><:: <br />E <br />;= 0.4 <br />~ <br />.<:: <br />,g> <br />"' 0,2 <br />:I: <br />"' '8 <br />~ <br />..!!! 0.0 "5 <br />"' <br />cr <br /> .0.2 <br /> <br />NA U Sand Bar Studies <br /> <br />1.5 <br /> <br />~ <br />~ E <br />ca - 1.0 <br />lO"' <br />01 <br /><:: <:: <br />.2 Ct'I <br />~.r:; <br />~ u 0.5 <br />Q) '" <br />w'" <br />CD <br />.r:; <:: <br />01'>< <br />.- 0 DO <br />:r:;C . <br />1- <br /> <br />-0.5 <br /> <br />Final Report <br /> <br />11 <br /> <br /> <br />. <br /> <br />. <br /> <br /> <br />. <br /> <br />. · 1996 <br />Controlled Flood <br />,2=,59 <br /> <br />1997 <br />Test Flow <br />,2=0.14 <br />- - c-&~t <br />.. .. <br /> <br /> <br />;'1 <br />~.' <br />" <br />,.' <br />~ <br />. <br />,': <br /> <br />. <br /> <br /> <br />o <br /> <br />1 2 3 <br /> <br />Stage Change (m) <br /> <br />4 <br /> <br />~ <br />~ <br />i <br /> <br />i <br />," <br /> <br />;'. <br /> <br />;; <br />;", <br /> <br />" <br /> <br />;,~ <br />~ <br />1'1 <br /> <br /> <br />, <br /> <br />".~ <br /> <br />~.,j <br />... <br /> <br />,,,' <br />.~, I <br />~~' <br />" <br />" <br />,~ <br />~ <br />M <br />~ <br />~, <br />" <br />.~~ <br /> <br />.. <br />, <br />'. <br /> <br />(:~ <br /> <br />~. <br /> <br />0,04 <br /> <br />0,20 <br /> <br />0,08 0,10 <br />Median Grain Diameter (mm) <br /> <br />Figure 10. Graph of median grain size as function of relative height within deposits caused by the <br />1997 Test Flow, The locations of the sampled sites are shown on Fig, I. Seven sites are located in <br />Marble Canyon and 2 in a segment of upper Grand Canyon below the Little Colorado Ri ver, <br /> <br />26 <br />