<br />\\'E~HR~, ~OU~JD"RY W.-'lTlR 8ULLETII~ 1%5 IN1ERr~ATION"'L BOUI..O"Ri M,D W"HR COMMI~~ION
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<br />GENERAL HYDROLOGIC CONDITIONS FOR 1965
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<br />Colorado River
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<br />N"rmallv th"re IS no meaSllr.lble amr,unr Cl( runoff (rom the punlCll1 or the Col')T1ldo R,,'er 005 In In thf' UnITed STates
<br />and MeXICO heluw Jj,'o"~r D~ITI, nuT m,-\uding Bill W,lltJms ~nd Gila RI\'ere. TIwre was no signIficant ammmt In 1%5. The
<br />..verage be"~,,n~l {()(wber 1'i64-SoOplC'nlb"r \%5) rdlnf.lU ov"r th~ uppt"r bdsm. JS t;~gcd OIl 11 Ind~x stiltLons, ....as about
<br />18.8(l inches wmp~rt:d rCl a ~~Jsuna.1 av"ra!;t' of ~b(Jut13.8~ Inehe9 f,or the 43 se..SDnS (l921-1~65). In the l'lwe! b391Il of
<br />rhe OJlurJd'l RLn'r In M~_"cL>. from ML>relos [)L\'f:r5'un Dam to me Gulf of CalJlornl... rhe averagoO preClplt.atlOl) (1965)
<br />m~dsuf\'d at 0 lnd".' 5tall'JnS ......15 2.95 IIlches compar~d 10 3n .werJ.&" o( 1.85 Inches durmg me last 7 yc~rs (1959-1905).
<br />
<br />The nnw ~f rh" CLl!'lrJU'J RIVer ",.lchlflg Imperial Dam wa~ 5. i23, (l()(1 .lcre-r"et, ahvut 05% of rhe 31-v"ar average
<br />I J'!J.5-J\lt'5<) .'f~. 845 lO~ aer"-[,,eL At the' [],:.rtherly Int"rn,ltO()I1al bmIncLry. the totOlI now o( the river durmg 1905 v.'a~
<br />I 52~. liq 3cr~-feel ur at>Llllt 35;t 'Jf m~ 1'"35-1';1/:15 averJ.ge of.j, 347, 047 acre-fcoOl. AI: tlle sClutherl}' InternaTlona\ bound-
<br />Oln', the nUwdurLl1g 1065 WJS only 101, B6ll acre-fret. or aboU! 3% r)[ the 1915-ICl65 Jverage of 3.020. ~25 acre-feet. The
<br />t'>t'al ilow uf!he Co\or~do Rtv~r re"chmg me EI Marollmo GagIng Station. 47. Y mLles dawn~t[\Oam from the soumerly tnt.:r-
<br />natl,'I1.,l1 bnund.llY. and I~.o miles downslre3m from we S,mor.l-Baja C~lLforl1la ra,lroad brtdge. wa~ 76. 622 acre-f!.'et 1/1
<br />1005. Jb.,ut33';,oflhc 1<l6(l-I<l1J5a\.engcof'233,060.lere'f"et,
<br />The tc'(,I! of all nov.'s ot we Colorado River entenl1g Me:uco III 1965 811lnunted to 1,037,601 acre-feet, 33% of th"
<br />I'n5-IY6.~ aVddg" 01 5,057, U2U 1lcre-ff:et, J.~ measurl'd I) In rhe Cc,lorJdo River 8t we northerl,' U1tf:rnat10nal boundary,
<br />~) In we Wcllton-Mohawk M.lUl Outlet DraIn Exrension near More10s Dam, 3) In the v.'a~teways wat discharge IntO the liml-
<br />trophe sectoOfl of !hf: nver !:rom we Untteu States bank, and ~) In !he canal v.'hleh discharge" v.'aste :lnd drainage waters
<br />fr<J1ll we Yuma Project aer',:<s the soumer\y IJ.l1d boundary Into Me"--lCo n"ar San Luis, Arlzvoa, less UJv"rsloos In we
<br />L1niterI'itawsby [lumps III the ilmitrophe.'l:ectlOn.
<br />
<br />Nu (]ClOO r~:tks of import..nce o.:.:urred in strellITlS of the IClwer ColoJrado Rt,'er ba51n dunng 1965, A ma.'Umum lJ1-
<br />Sl.lntaneOu5 llLl,," 01 8,040 second-ft,el Decuned In the Coloradu R",'er at lhe lh)rtherly bound1ll'Y st:.tlCln on Apnl5.
<br />
<br />Stored ,,,cater5 ar me end of ml' ye3r lJ1 me mree maJoJr resoO("\'otrs On me Colorado River beluw L.ee'" Ferrya"
<br />mounted to 17, ~li, illO acre-f~eT, 59% of we usahle .:~pactry of 29,030,000 aere-fe~!. Tnf: jp"eawr part (15, 23J,000 acrf:-
<br />feet) of me ;;lOrJge wa.~ contaln~d tn La~e Mead (tloO\'er D~m). Th"re W~re no reported ShorT~<:es of Colorado Rtver water
<br />for LrngJtlon during: 19115 due to drou!;hl.n ;j~cidenlloJ me lrngauon gy51~m.
<br />
<br />The t0l.11 ,eporTetl "cn:,j,~ IrrilS~ted frail) ...-dterS Cl( the ColClrado RLVer be\L>W Imperlal [).:J.nl ill l\lb5 w~s 1,092,015
<br />"CI'.;5. (-50, ~"S acr~s ,/1 m" UnIted St..tes and HI, 770 :!crf:S In MeXlco, An .;SII'''Jlf:d one-mlrd ot acreage ill Mf::Ucu IS
<br />served by rum~'lng Iron' gl-ound wau,r.
<br />
<br />TIlt< su,;p~ndf:d sedIment l"Old paSSIn", the l1t'rtherly boundary SlJl[Jon In I ~65 .....:lS '11.1 acr~-feet, about 22% of me
<br />1 ~56- 1q65 .."erJo;e of 415 OlCr,,-leL't,
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<br />Tijuana River Basin
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<br />Durillo; 1 %5, heavy starnlS In r\o,,,,,mbe! Olnd i::Iecerntler produ.;eu excesstve runoll In the \attf:r part Clf th~ ,'ear, The
<br />temper.Hur~S Jt D.,rren Dall1, Caillornta Ide,au"n 1,7;;0 feet) In me upper punlUn "f 1..1,,, lJd~i" ,n t1,,,, [J,ll!",] Stat.:s a\'~r-
<br />a!:"d 1.\1 u~p"ee~ ~1'lW me 35-year 1l1eJJ1. In the e~Lreme uppoOr poruon 01 th" baSin m MeXICO at San Juan de Dtos, Baja
<br />CaliloJrnLa (oO]~v.tl"n 3,~HO f~et), rh... recorded temperatures durt.ng the ye<.ir averag\ld 54 degrees, .j degrees belov.' the
<br />l'ln;:-t.:nn a\'cra!";e and at R..".:Il'(gue~ DJ.m, O~Ja Ca\tIClrnla (<elevation ~5\1 (eel), the recorded tempt:r~Tures dunng th~ year
<br />OlverJb~d [>1 L1eg-r<;:es, equ3J to;< me 20-ycar /101-maJ.
<br />
<br />Ar L'..Jln:tl Dolin UI di" up~'er ,','rw.'1I of dtt.' bd~11I III Ole UnlreJSr.:rces, we re.::CJrJed ;>r~.;>icB:jO.C lI'as ~4.08 1:h::l:es,
<br />lJn;, of n"rm~I, and al Glul:l Vtsta near th\l lowcr entl nr the t<a~tn, 17 ,0" Ulch\ls, or 17J% .)[ normal. The r"corde,] pre-
<br />~lplL.llioJJl at San Jll.ln de Dws In ule upp'!r p,ortion or the bJstn In M~:uco, was 21. IB Ulches, approximately 12Zf" of the
<br />nLlrmal durIng tho: lO-y".u- ~rtod, :Uld Olt: R'.odrr~'lJ~~ Dam tn we I"w"r p"rtl(Jf\ of ml! baSIn In MeXlco, 16.26 Inches, 200%
<br />01 tho.' l~-,"ar OVC1J!:f:.
<br />
<br />Runotlm illC baSIn durt."g I\lt!;; B,'eraged 14% 'Jf normal. Above Morena Rc~eHOlr, the runo!! was ~61 acre-t~et. or
<br />Jbout 7;' of the 2Q-year 1<;)3;-1"05 mean <;of 6, 7'"11 ~cre-(<.'et. At Rodrlii:uez Ftesen-olr, the runoff wa~ 4,\l6.~ lI.;re-(~et, Or
<br />about JO%orme 2S-year mea/t of 1I>,~,,8 .acre-feet.
<br />
<br />DurIng 1\I~5, the Oow III me TtJIJnna Rtver at m~ tnterna!1U1ld1 bound:"ry w~s ~,560 acre-feet:, 100% of the l"-year
<br />1\l~i-I'l1l5 Jverag" llf 2,5111 oIcr,,-feet, The 11.'w JI1 moO TtJuana K",'er ne~r tjestor w,,~ 553 aCle-feet:, 2,3% of the 2"-year
<br />J'137-19I\SaverageofLJ,0ISOlcre_feel.
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<br />Whitewater Draw
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<br />Dunng IQ6'>, the ;overage .lnnuJl telllp~rnrure ov~r t.h~ watershed V.'as normal and me annllll preclplTaTton WII9 81~0
<br />ab'Jut normJI. RunoJH fLlr tlle \""ar 3t We IPgll1g ~tnltl>n ne~r D"uo;l:..s, Arizona, of ~,()~9 acce-feet was nbout 57% of 3\'er-
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