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<br />THE 40 YEAR WATER-USE REVOLUTION <br /> <br />TOTAL WATER r- <br />DIVERSIONS - <br />South Platte Basin ~- r- I"" <br /> - I- <br />Surface Waler . r- - I- <br />Ground Wale,. <br /> i- I- -f- --f- <br /> r- <br />r- r- <br /> I- <br /> -- <br />r- <br /> - <br /> - <br /> - - - - --- ;;;; -f-- <br /> - <br /> I- <br /> - - --- - ---f-- - - - -1- - <br /> f-... <br /> <br />8,000 <br /> <br /> <br />7,000 <br /> <br />NUMBER OF IRRIGATION WHLSf-- <br />Soulh Plalte BO$in -J <br />_To.all........." <br />_MoinSI.m"fPla... <br />---,- T <br /> <br />~- <br /> <br />6,000 <br /> <br />5,000 <br /> <br />--+- - <br /> <br />4,000 <br /> <br />-..------. <br /> <br />3.000 <br /> <br />-1- <br /> <br />2,000 - <br /> <br />-j - <br />+ <br /> <br />~~ <br /> <br />1,000 <br /> <br />Before 1930 1930-39 <br /> <br />1940-49 <br /> <br />1950.59 <br /> <br />1960-69 <br /> <br />s.o.,,,., To..,1 Ba,,~ 1~lo,ma!,on <br /> <br />Colo.<><Io s..,.. Eng.n....' <br />us c..olog.<ol :W'''e~, C.-pI <br /> <br />Ma," Stem Inla.m,,"on <br />0111"."'" <br /> <br /> . <br /> . <br /> ~ <br /> . <br /> . <br /> " <br /> '" <br /> - <br /> 0 <br /> . <br /> ... <br /> 0 <br /> a <br /> . <br /> , <br /> 0 <br /> '" <br />"-'- ~ <br />0 <br /> . <br /> 0 <br /> .~ <br /> . <br /> . <br /> . <br /> -~ <br /> C <br /> <br />1940 <br /> <br />1945 <br /> <br />19S0 <br /> <br />19S5 <br /> <br />SoY". uS G<<>1oqo<ol$u...., l)o.pa".....Mofln'..'..,. <br /> <br />Pog" 6 <br /> <br />A NEW TECHNOLOGY <br /> <br /> <br />Efficient irrigotion pu <br />gated pipe, concrete ditches, <br />sprinklers, infra-red photog- <br />raphy and other new develop- <br />ments are now on integral <br />port of the irrigation system. <br /> <br />Engineering studies show the <br />available supply to be neor- <br />Iy doubled for the critical <br />growth periods. <br /> <br />Water tables hove been con- <br />sistently restored after the ir- <br />rigating season. <br /> <br />1200 <br /> <br />1000 <br /> <br />800 <br /> <br />600 <br /> <br />400 <br /> <br />200 <br /> <br />1960 <br /> <br />1965 <br /> <br />1970 <br />