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<br /> <br />~ <br /> <br />Figure 4. Deer Creek. Falls (mile 136 loR) <br /> <br />~t3:io <br /> <br />~"" <br />....-..~~"'Ir., <br />~< ~'~~~~';;;;" <br />,111 ._:~~__ <br />.- ....i!';.__...'!!, <br />t:'-~ .. '. <2' '- <br />. -~. <br />.- <br /> <br /> <br />~. <br /> <br />- <br />- <br /> <br />.- <br />--- <br /> <br />.- <br /> <br />A (lel1). September 10. 1923 Deer Creek Falls was phOtographed by every early river tnp. ThIs senes shows the <br />walenall from river right on liS debriS Ian. The large sandbar on Ihe left Side 01 the vIew is part 01 what atlr3cted <br />fivers to camp here (E C. LaRue 547 courtesy 01 the U.S. Geological Survey PhotographiC LIbrary). <br /> <br />B (right) August 15. 1940. The annual Ilood 01 the Colorado River always reached the base 01 the waterfall, and <br />the sandbar was annually renewed The Width oj the waterfall changes as chock stones are added Of removed <br />!rom the sial. Although thiS photograph was taken from a different perspective than the 1923 View, new rocks are <br />apparent on lhe debns Ian (8 M Goldwater. unnumbered. courtesy 01 Ihe Cenler tor CreatIVe Photography. <br />University ot Anzona). <br /> <br />h.... 'tafl....d \,url.lI1g 10 (;rand CIO~un. and Ihal <br />'uh'''''lju''''l1tll(loo, ....on,ln....ll.d Ih...' f1\\,'r t"unh....r. Rif:~ <br />r....Il11.mlx.r....o 'Illall dhlllg...., ix'1\\........n 14:,l) and lllh:, hUI <br />Ihtluf:hlth.... ...'\In'lnL1inn \\a' rnut:h \\I)r,...' flU\' Ta"....n <br />tog""II1l'r. Ih....,.... Oh'....f\:lll\lll' ind,....;jl\.. a l~picaJ r.lll....m <br />,If '....\\.'ral. do,....J~ -lin1l.'J d....hri, 11,1\\, in nn.... lrihular~, <br />\... ilh Illl!e ..."hang\.' hl'forC' or atkr. Thl' '.HllC' ...~tJur'...' 11f <br />...'\ ...'nl-. unh)ld,."o in olh...'r lrihutark,. indlld111~ Pru'f"'l'....l <br />Call\on, \,hl'r\.' ,i\ ol'l'lri, tlo\h and ,...'\\.'ral ulh....r <br />fhll~.h all...'red 1.;1\;\ Fal\-. R.lpid tx'l\\l'....n IlJ.N ;llld <br />IQY5, <br /> <br />[)illll'....1. rnl\ id....J rhlltll~raph, and l)h,...'f\ allIIn, <br />ahl)t1llh.... 111x..1 d....hri, tlll\\ III \!11Il1lIllL'1l1 (.rL.....l.lmil.... <br />IJJ5.LI. III' trip rhu1\lf:rarhl'd ;1Il...'nl1r11lUU' \\;1\...' IIMI <br />lor1l1l'd hridl~ ju,1 all....r lh...' ....\....nl. ..\It....r 'u","C",'"full~ <br />phlltugraplung I.LIld runnlllgJ Ih...' \"';1\...'. Dimlll'l. ,aid h...' <br />Ill'\...'r '.1\\ it ,)r anything It"..., It ,l~;l1n III (iranlll' R;lpiJ. <br />j)IIlIlIl'1. ;1\-'0 nOI....o ...'hangl" un Ih.... !ell ,ld.... ,II Sllap <br />Cr...'....1. R;lriJ Imik 11..~: lY79_lll:-;~I. \\hi....h h...' <br />;ltlflhull'J h' a fllt:l.f"ll. and Ih...' r""\\I'r\..ln,b (lIth...' fl.bhl <br />"...Ir: uf 1I,lu',' KUt:1. Rapllll1Tlllr: Ih.lJll'l~ th...' 1I)x.~ <br />lhllld. <br /> <br />. <br /> <br />14 OBSERVATIONS OF ENVIRONMENTAL CHANGE IN GRAND CANYON <br />