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<br />nnll. i-
<br />
<br />At dw prt'~l;'nl tlllW. tllt'r.. an' no import,. or {'xport,.
<br />III Willet \n lit from Itll~ ,uhtm"lfl. ThTN- maJ"r Tt',..
<br />"r\'Jlr,. <In' ].,cH{'d wllnlll till.. "llhha,.in. Fu..'UTt. '.!:!
<br />HllZhllrtl Lah hf'hinrl Ydlowll1il IJalll with a ""rmal
<br />'~Lp..nl_\' ,,! ...7:1,000 ilft{" h.t'l is tht, InTl;l''''. Ho~-..l'n
<br />n'"er\-uir ""'Ilh a nhrma] Cllp"Cil~ (If 'iO:!,fNMI IH'f(>-lt't'l
<br />I" II dO"l' ""'("<'nd. Bullt\!.. Hill T",,,,,'nnIT. I"nllt.d nil the
<br />\\"llld HiH'r hH" a I1OJrmall'apaulY "' ~:!l.;\OO anI:"
<br />let" Alllhr!;'(' n.'t"r\"llr,. art' ,'WIWII Hllrl '']It'raldl h\
<br />Ih.. t.=, Hurt'i111 .,1 Ht'd:lrnallnn 1)/'1111;"11"11" ,jilt. '"
<br />t'\llporalllln Ir"lll the..,> Tt'''('f\'oir.. an- "hl1wn on Fi.:
<br />un." :!:i (hrollj:.':h '1;"" Thl,- 11\t'W+:(' m"lIlh]~ ,'\'apoTatlun
<br />durinj:.': ,h.. pl'ilk month.. 01 .July and AIIL,'u..t ap'
<br />prlllldw.. ]0,11011 ,tl'Tt. It,,,\ p,'r Illonth at H<I.\"~"n ft....
<br />t.rnllt. alLd ;,.(KK) ;tl'tt. 11'('1 p,.t 1Il"1I1h 3t Yt'llHwlad
<br />f"~'.f\Hit Th,. a\",ra~1- lllO/llhl\ 11{>f ('\"dpor3tlon ill
<br />HlIllalo Hill Tt,..t'rnlir ," ,dl"'lf :.!J.IKI ant' "h'l IWT
<br />","lIlb dUrin.: l>l'ak t'\ap"rall"n \\tm'h '"Tllr~ III ,JIlI~'
<br />and ;\IlI!\l~1
<br />
<br />In lhl~ ~1l1)hi\_"lll. 1<'1011 t'..lunalt--d annllal d,'pll'II"n..
<br />Itorn f'\Hp"r;llllln lr"lU rnaJ"r m;1I1,mm!t. 11l1p'1I1l1d
<br />llH'1l1 ~ d\f'ral:"'" I :!~I,I;OU IlCT.-./t"d illlnlwlly. \\ hilt, t'\ ap-
<br />OTall'"n Inllll all "Illall ft...t'f\".r.. 111 th,. ~\lbhil~1ll
<br />,l\t.ta~l'~ Hh"w li,lOll :lI"t.. /l't'l ;Hlllllalh
<br />
<br />-"'Ur!;hf' \1,IIt'T III Ilw thr,'" "'\lhl1il"lll ..tall:"'" I" C"1l
<br />..ilh.Tt'd 1'1Ihlil- PT"p,'rl\' Thl' apptllptiilll"n ci'l(.trilw l~
<br />1l1111h"d 10 ,111'I('att' walt'r III .llllllTl'l' ~\;Ilt." l'ndt'r ,h.lI
<br />_,,,_\..It'm, ptlflTll~' III tllll'- I.(i\t.,. IIII' ,:,upt'rl..r watt'r right.
<br />In /111 tl1n'" ~ultha"'lIl .:,tall.... \\hdt" 1I1ilillnc- "oll1,'whal
<br />dillt'Tt-1lt prtll'l.dllfl.... ..t;I(1- ,1g..nt'II'" tt'j.,'l.llal., I Ill' wal,.t
<br />ti~hl prl"'"'''' \"Iwr.. I h,'fl- an' ,"'lI1ll1'l In!.! ;lpplleat)Un,.
<br />Jllr w;ltt'r Ir"lll fIll' "',llllt. ""lift'\, ;lm-llh"n' i~ Ill"llll"l-
<br />nt'nl wal"t fll "111'1'1\ all :lJ'plil'ilnl,., tilt' ,.tal.'.. halt.
<br />.'..Iahll,.flt'd will,.'r u..~. ptt.It'n'n"I'''_ Tht, <ltd,.t "I prd
<br />"tt'II"" dill,'r.. III 1111' I !In.., ..uhha"lIl "I1Ut'~
<br />
<br />\l,.nt:\na, \\".,umlll~ ,lIld '\,"nh Il:\klJta att' IIlt'm"
<br />11,'r.. 111 th,. Y"]I,"w..tc'I1~' Hn,'r ("'I1IP;ld. -"'pf-'t"lli\' al.
<br />1',ulll'II\" 01 lh., ullll"'t'd iIIHllllwPI,r'"pn:.I..d watt'r,. 01
<br />Yl'lI"\\'''I''IH' HI'-I'r lllll'r..! at.' 1 tdllllaTlt'~ la~ "I .lalHlar~
<br />I. 1!I,',(1l ,In...d I'"nh 11lHlt-r lIlt' ,'olllpad Tn" lll\II",'d
<br />and 11lwpprlll.rl,I1,.,1 \\:\I.'r I~ all",'akd 10 ",11"0 _~tatt'
<br />lir"l I"r .;ul'plt'IIlt'lIlal "llPplit... f"t n:,:ht.. with PTWtl+
<br />Ill''' 1",loTl' .J,lllllaf\ I. 1\1;,(,. Ih~'n ",r ..t"r;j~,' c'r dltt't'I
<br />di\I'r"lon..; I"f h"lwlin.llu..," Ih.t,liJ.. <II tlll'.." app"r
<br />IlllnllWfll,. ,'an ht. lound III olh..r c1"nlllWnI,..
<br />
<br />In tilt' Yi,>IlOl\..tollt' HI\,'rJ.:I"lIl, tIll' lllaj"rw;lter IIH'r
<br />I" irn~,llHln .-\.. ..hnwn III Flj.,'lHI' ;!h. Ihal a('1l\'il\ hll...
<br />ill l'''lIl1!t.dt..t ,llltlUl ~lllllt'f<'t'llf oj 1111 dt'pldlon.. l~ lh...
<br />"llhha..tn_ (h,'r lht. I~qll" 1~1-;-"'IWTII"l dt'plt:'llllll'" dUl'
<br />\" l:llld \on",'T\ al Ifill lllt',hl1r..~ ha\t' 111<'r,'a,.,'d Irom a
<br />11_.; II<'Tn'n\ ..11M,' \0 ;1 1 '! pI'Tt,~.nt 4111tt- 01 10tal de,
<br />plt'tinn.. Th)~ I" rl'llt.,"It,d h\ the lnnl';\~t' 111 arrt.agt.
<br />01 land ,'on..,'T\;lll<1n nt,':I.;lln'~ Ir"1ll .111<'111 tlllt"hlill
<br />million ani" in 1~111 I" allll,,,t 1.1 l11illwl1 ;It"ft'.. In
<br />H'-;-", ()unn~ lh.' pt'TI"IL lull ..,'n'ln' Itng:Ht"d artt'':'
<br />U\1'rl';bPd Ir"lll aholll ~'-;-2.11fIO a.rt'.. ill I~I.II fn a pt'ilk
<br />"I 1.0!1~.lKKllTl th,- t-'arl~ I!ltiO". ~inn' lh..ll, l"tal full
<br />.."[\ i,'(' ,!t-n"" d...-rt';I....ol', ,th'Hlt ~I:-:- ,l It Kl ;H'rt''' in 1 ~)-; ,"',
<br />1':ITllal ..t'r\"II'" Irrl!!:;I1\l11l t"ll.,w,'d th.. ~,.mt' p,Ult'rn
<br />
<br />~oooo
<br />35,000
<br />JO 000
<br />25 000
<br />_ 20_000
<br />,
<br />
<br />.,
<br />
<br />>5000
<br />
<br />10.000
<br />
<br />;000
<br />
<br /> .10000
<br /> " 000
<br /> 30000
<br /> 25.000
<br />- 20 000
<br />- 15.000
<br />.,
<br /> 10,000
<br /> ; 000
<br />
<br /> .ID 000
<br /> 35000
<br /> 30_000
<br /> 25000
<br />" 20000
<br />, 15000
<br />.,
<br /> '0000
<br /> ;000
<br />
<br />Figure 23
<br />Average Monthly Evaporation
<br />Bighorn Lake (Yellowtail Reservoir)
<br />
<br />)an Ft'D Mar AD'" '.'dV' Jun Jul Aug Sep Oct Nov Dee
<br />
<br />Figure 24
<br />Average Monthly Evaporation
<br />Boysen Reservoir
<br />
<br />Jat' FOi'O '.lit, AD'May Jun JuI Aug Sep Dc! f\,IOv 0f'C
<br />
<br />Figure 25
<br />Average Monthly Evaporation
<br />Buffalo Bill Reservoir
<br />
<br />jar F!1b '.oar AOt '<la, Jun Jul A..,.:; Sep Ocl No. Dee
<br />
<br />~!l
<br />
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