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<br />.'"'":r.' ..... <br />~~?iJ <br /> <br />9 <br /> <br />. <br /> <br />Green, 1750 miles total length. Belo" t~8 jmlction with <br /> <br />the Green, it flows southweste~ly into Arizon~ across the <br /> <br />northwest corner o~ t:iat St~te, then tuxning south, forms <br /> <br />th3 boundary betw8en Arizon2. on the eabt and Nevada, Ca11- <br /> <br />fomia, and Moxico on th~ w~st, reaching the Gulf of Ca1ifor- <br /> <br />nia abo1.:.t 120 milos below Yuma. <br /> <br />The drainage arsa of thB Colorado River is 244,000 <br /> <br />sq1.l2~rt) milu3, distri b"'.lt~d as s::.O"Iim in the following tabl~: <br /> <br />AVFR~GE DISCH.ARG'GS. <br /> <br />. <br /> <br /> : Per c',;mt: Di s ch2.r ge : P',r cant A. F. <br /> : of tot al : in Squarl3:of to~al : pOl' <br /> :dis cim.rge: ,Ac"B-f,,~t mili3s : SQ.Mi. :SlJ..Mi. <br />Green Ri ve r 32 5,510,000 44,000: 18 125 <br />UPJier'Cclor9.d.o 10 5,940,000 25,000 : 10 : 267 <br />(Gra:ld Rival') <br />San Juan Riv',r 14 2,700 ,OJ'J 25,000: 10 104 <br />Other are3S <br />.,o;:cept Gila 8 1,560,COO 91,000: 39 16 <br />Gila 6 1,070,OGO 57 , 000 : 23 . 19 <br /> Total 100 :17,550,0')0 :244,000: 100 70 <br /> <br />The water supply fro~ tne vario~ bran~ncs is 3190 <br /> <br />shown in this table 3l1d. is b:, no means in groportion to the <br /> <br />area drained, the d1screp~~cy beinG d~ to ~he wide div3rsity <br /> <br />of climatic and to~oograpr.d.c ;::oC1:iitions., <br /> <br />TI,e rim of th~ ~~sin w~ence t~~ streams taka tnGir sources <br /> <br />'is composed largely of hig."- mO'.Jntain ranges. On the north and <br /> <br />e~st the 1~nd River Mountai~s 3nd the ranges of the Continental <br /> <br />. <br /> <br />Divide are the hig~est &ld lur~isfl tbe greatest wate~ s~ply. <br />