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<br />: I ~J 11 ~i '( <br /> <br />6 <br /> <br />SUMMER RU~OFF <br /> <br />Wyoming. Flows of Columbia and Colorado Rivers <br />were almost median; Colorado River near Grand <br />Canyon. Ariz., was 97 percent of median, and <br />Columbia H.iver near The Dalles. Oreg.. was 101 <br />percent of median after adjusting for storage in eight <br />major power reservoirs. <br /> <br />In both United States and Canada summer runoff. in <br />"elation to median, was less than the winter runoff but <br />greater than the summer runoff a year ago. The most <br />significant feature was the areas of deficient runoff <br />scattered from western Quebec to Montana and <br /> <br />EXPLANATION <br /> <br /> <br /> <br />/ <br /> <br />/)!}/ <br /> <br />%~~ ". \,,'" j,~ 1\\ / <br />, , :, '~V0ij j: I I <br />" ((-~;f' <br />o . / . M . <br />, ... ,'" ---r~-'-Ti\ <br />'--;-/,0/;t'l}J~~.;; -:.~': : '00,00 <br />~ho 'r/ /'. L_J.L__~ n <br />116 "';: v/ -..to-:.. I . <br />>7.- I ;':'>:0----: v I <br />/""-. / 1-- ,', <br />~.~,o j ~:-/--' i ' <br />'( "~----i1. <br />!to , /'30' J <br />'.(:IS&' '''// " <br />~\ I. '"Il <br />/';"";'''\ 70 <br />~ /lto--!~' <br />/'-0 ~"):?7f';;"\1 'n;-,~- 'l <br />1520/''', ~, <br />~):. '~~~~ ~ <br />--r' ~/).; " <br />'-~r;:_...-- 3.1 <br /> <br />, , <br />,.,.... <br />~ "\60.. <br />......... <br />. ...... <br />... .,.... <br />....... <br /> <br />Numb~ ate in<!ues of 5Ir._ <br />flaw for Ih.p",iodor kit 9<l9i"9 510rion5\ <br />computed 05 petcenr of med,on \m,:IvaIUl/ <br />flow fo, rhe 5tondord period 192 -~5 ucepl <br />ossho..nhtilolics. <br />:.......Stteomllaw defic,enri., <br />........'n<!e.o"lOn910we5ll5 <br />pll'tcenr 01 record lot '.... period. <br /> <br />., <br /> <br />~/// Srt.omllow e.cu5,..-ej' <br />"////.induDl'l'lOr>9highe5! 5 <br />percent 01 te<:otdfo,lhepetiod. <br /> <br />P,epored by U. S. Geol09ico1 Suty"y Dcl. 17, 1958 <br /> <br />STREAMFLOW INDEXES FOR 6 MONTHS ENDED SEPT. 30, 1958 <br />