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<br /> <br />condl,tions and possibilities fO.r sediment,re~,+c,tionthrough soi.l and <br />moisture conser,vation are in progress. We hav.e completed f~eld work <br />on the Littl.e Colorado River Ba.sin and are wi:)rking on the J.<.lI,na,bCreek <br />drainage. .' <br /> <br />A revised report for theDixieProject:o~ VirgtnRiver, Utahis <br />being reviewed in the Commissioner's office. Revision pf the report <br />for the Moapa Valley Project on Muddy River, Nevada il!l nearing <br />completion. Completion of Bureau studiel!l oj1 the Santa ~rga;i:ita <br />Project, California, depends On the outcome of court action .for <br />definition of water rights. <br /> <br />.~. <br /> <br /> <br />,. <br /> <br />* * * * * * * * . <br /> <br />ACTIVI'I'IES OF THE WATER RESOURCES DIVISION OF THE <br />GEOLOGICAL SURVEY IN 'I'HE COLORADO RIVER BASIN <br /> <br />Cad G. Paul.sen, Chief, Water R~sources Division <br /> <br />The Geological Survey as a ruearch il-nd inVestigational agency, <br />has as a major function cQ].lection and analy'.sis of basic water resources <br />data. The Survey dOes not take part in development of water resources, <br />but its determination of the CJ.uantityand quality of ground and surface <br />waters is of utmost importance in planning 01' operating developments. <br />The most widely known activity of the Water Resources Division is the <br />streamgaging program. In 1953 there wer~ 490 gaging stations in the <br />Colorado Rivet Basin, including records of storage and diversiona and <br />records furnished by .other agencies. Recqrds of all trans~mountain <br />diversionll are,now being published in annl$-l wa.ter.aupply papers. <br />Although the program has gtQWn continuously, the number of stations <br />is still inadequate for resolving all proble~s of equi.table apportionment <br />and depletionaof Colorado River water. 'I'he Sw:vey hall studied the I;l.et. <br />work of atations propo.sed by the Colorado River Board of California. <br />Indications are that this study will ahow ne"d for many neW stations. <br /> <br />This year compilation of all stream40w records collected in the <br />basin was completed. The report is beinglproceued and ahould appear <br />as Water~Supp1y Paper 1313 next spring. ,All monthly and annua.ltecords <br />through September 1950 have bellln revieweidi reanalyzed, revised whel;'e <br />neceuary, and summarized.. Smal1 gaps ;in s.ome were eatimated. <br /> <br />Country-wide thete is great need foJ! smalL-area gaging. station <br />records. The Survey has expanded its progra.mon small. streams. mOlltly <br />in cooperation with State highway departmjents, to determine and analyze <br />streamflow characteristics at bri.dge sites. At pre.sent the onl,y state <br />in the Colorado River Basin in which we a~e operating a special coopera~ <br />tive program with the highway departmen~is New Mexico. Investigations <br />on small streamll are being made.b.owev~r. in 1l.1lthe basin states. As <br />an outgrowth of the highway program impetus ha. been;pl.aced onfloo.d,.. <br />freque\llcy reports. Most useful rellults are from. regio:lUl.I fr.equency <br />curves rather than individual stati.on ana.l:Y,ses.In Arizona. a state.wide. <br /> <br />. <br /> <br />~ <br /> <br />It' <br /> <br />.. <br /> <br />-6- <br />