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<br />(1) reH.1bil1ty or !:crlerntioll and trllll"mj ssioll plant f~cJ liLies 011(1 <br />(2) il1terdcpende.ncc hetwcp.1\ arljnccIIt sy~;terns for rnC'ccillr, load~~. <br />ContrActual commitments between tll~ various adj<lc0.nt tntcrconn(~ctl.~d <br />power ~YEtcmA in th(: form of mutulll assjstilnCf" cJ.,uses provlJe ~illpport <br />and st.1bi11ty to CURComerR served hy the Colorado IUver Ilydro!;ystC=l"lS <br />hut at the Silme tiMe 1mpos~ ohlir.i\tlons on the Co]or<luo Hiver systems <br />to provide simil~r ~crvice to interconnected arljacent systellls. <br /> <br />I,. _Recreation, FIsh, anu HI}~.l.lf", The Colorado lliver nnd its <br />vnRt WD.tl~r FJUrfl.lc(~s in lakes and river stretches offer tremendous <br />recreational and fish anu wlldlife benefits. At least In millIon <br />rccrcationists visit the river annunlly. Half of tllese ,1re counted in <br />the Lake Head National Recreation Al"cn every YC<:Ir alone .:Inu the <br />comparatively new Glen Canyon National RecreAtion Area is f.1st appro.1ch- <br />in~ thi9 numher. <br /> <br />Two .1rp..:lA on the I.olorado '~ivp.r~ Lake ;.!ead r-Ji1tinn:ll H~crC~iltion <br />Area and thC' r:ranu C[1nyon Natiol\ill l'.1rk, h.1vc~ lip to the' pr~s('nt tj1l1C' <br />felt the Imprint~.> of an estim.1.tcd 140 million p~o\ll~'. <br /> <br />Fiuh and wildlife, much ottributahle to I!\lln's. d~velopmc1\t of Lh~ <br />rJver, ahounJ in ilnd Rroulld the rescrvofrs and down!":trcll(ll Rtr<~tcl\\~~;. t,n <br />undependable flnd erratic river h"l~'; heen trnIlsfnnncd 1nto one of till: <br />natioll'U finest recreation 9trenm9. <br /> <br />5. ~Erl c.!:.!..~~. The wor Id-wiJc concern OVC1. [oau sl1ppl.l e~ <br />i"Cre3~efi tile importance of tllc 2 million dcrcnJ~hlc acrcs of irrigate,l <br />agr icul turc served by Heclamation works on the Colorado P..:lver fur he!rond <br />the BOO million uoll:nr, of income prouucecl. <br /> <br />C. 0E-er"tiq,nal_Record <br /> <br />1. Lal~e Hcnd. <br /> <br />(.1.) Construction on Hoover Darn W;).5 completed in 1~36. Until <br />llpS[r~am re~lervo1r~ were hui1t. Lay.e l-ie.1.d's storrlgc c1nd clp.viltion Hcre <br />substantJally dependent on the sprinr runoff of ~le Colorado River. In <br />10101, La:.e ~l"acl filled to e.lev.,tion 1,221.4 feet aided hy an above <br />.1vera~e runoff. The 10.... c!cviltioIl, since 19/,1. occ:urred in 1')5(' after <br />3 helow averc1.~.p- water years. Since (;lcn r.anynn /);tm be~:c111 ii.lpoundillF~ <br />ColoraJo nlver \o,.later in 1963, Lake !1eacl'A w,1tC'r surfilcP' ilc1~ bel~n f(.'l.allvt.~ly <br />stahlc and il1mo5t entirely Jependent on r.len Ci1nYfln rc.le.1sf:s, ...,ldch i1rr' <br />flovcrllcd l)y Color.ldn river Compact .111(1 wc1lcr rcrluir~Mcllts of U~t'r~l <br />dOWTI!\tream of Hoover Dam. (See Drn...1inp, !-lo. I.S-JnO-l)O). <br /> <br />6 <br />