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<br />:I.n regard to the Cali.t()mia",NevadaCompaot. ($) In New Mexioo, ~he
<br />stations on Citizens Ditch near. Turley discont:l.nued; (6) In Ul;ah, 17
<br />stations dil!loontinued, 1 gag:l.ng stations and 125cn.-e13t-stage etations
<br />estabiLished. . ..., . ..
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<br />Interpretive andhYdrologic'st1l,dies ~f signifioanoe inolude the 1'01-
<br />. lo'wing& ' . (1) Magnitude and dux'ation of floods at. gag:l.ng stations having
<br />drainage areas of 400 square miles or le ss in nine States, oompllrted
<br />September 1958. (2) In Cali:t'orr).ia, determination of low.tlow and peak-
<br />discharge characteristios 01' streams.laok:l.ng recordil'.lg gage stations;
<br />interohange ,of surtaoe and gro1i:nd water along oertain $trea.ms of the
<br />Saora~nto and San Joaquin Valleys;. ticlal.oat'tected tlw of .tm
<br />Saoramento River at Saoramento;tloods. from IlIllWdrainage areas. Punch-
<br />il:\g daily streamnow data on DatB:tron tape was oontinued,andchU'a:bton
<br />tables for high and low flows were maohine oomputedfor a number of eta-
<br />. tions. . Tests of procedures vrill go on a produotion basin :I.n January
<br />1959. (3) In Ida.,,:,Utah, a repoJi'ton streamflow in the BearMvar basin
<br />was made to the Bear River Compaot COIllllIission. (4) In Nevada, a repClrt
<br />on minor floods :I.n 19;; and 1956 is in preparation. (;) In New Mexioo,
<br />three seepage runs on the Ban Juan River, two in the Bloomfield-8hiprook
<br />reaoh and one between Rosa and Bloomfield. An administrative report was
<br />made ontlood oharacteristics of the An1rrfas River at. Azteo, in oonneo-
<br />tion wi tk a proposed bridgesi te. . ..
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<br />. Ground Water... Collection of bli.sio data and mapping of pe~inent
<br />geolo~O features 'oontiilued in problemareall. Notewort/1y area :l.nvesti-
<br />gat ions not previously reported :l.noludel (1) In Arizona, draft reports
<br />were oompletedon the Sncmflake-TaylO1' area and on the ili'and Canyon
<br />National Park and. Monument. other studies in pro~ss are oone~ 'With
<br />l>l'oduotivityofaquifere and changes in ohemioa1: quality of water at
<br />depth in the Salt River Valley,. water moWlment. :I.n the .inner San Pedro
<br />Valley I'l,ear Mammoth, and ~rology :1nrela tion .to water use :I.n the uppe r
<br />GUa an.d lower San S4.mon Valleys; (2) In CalUornia,n~ in1rerligations
<br />Were started in the ~an Fr~iaco .Ba;r area inOOOpel ationwith the Corps
<br />01' Engineers and in the Palm Spring area in oooperation. with the J3u,re;lU
<br />otIndian Affairs. Reports released to the open file oover the San
<br />~ area, MoroongoValley,upper MOdavG Valley,. and Napa-SonDllIa
<br />area. St1,ldies in numerous other :areas were continued Without major ohange.
<br />(3) In Golorado, field work was oompleted on grouIld,owa:t;.er re6our!;es of
<br />the Ute Mountain Ute Indian Reseli'Vation,. (4) In Nevada, a report on the
<br />Quinn River Valley, Humboldt County,wall published as state of Nevada
<br />Water Resources Bulletin 14. A drai'1; report on Cresoent Valley, Eureka
<br />andLander Countiell,was oOlUplet~d.; Two s.tudies were be~e:l.n
<br />Pahrump Valley,' Clark and Nye Coum1esJ the other, in the northem half
<br />01' Washoe Cotintyand th.e. extreme :'l!Bste.rn part:. of Humboldt County. .
<br />(;) . In New Mexioo, an :1nvelltiga~ion Was started on the southElrn part or
<br />the JiClariJ,la. Indian Reservatiop, largely intbe San Juan River basin,
<br />,(6) In Oregon,s repo~on.ground-wate:r mOU:roes of thEl IO.aroath Rival'
<br />basin was released to open file. (7) In u:tall, a report Oil the ~
<br />.. Cab'yO~ National Park area was release(!to open file, and a new projeot
<br />was started. on . ~hegeology and bedrook aquiferS of thaUinta BasiJ'i. Be-
<br />CoMaiss8.nc9 st1,ldiesi'ortha National p,,1'k Sem.oewera made at the
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