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<br />822
<br />
<br />NATU~LiRBStDURG:JS..IOURNAL
<br />
<br />[Vol. ,40
<br />
<br />Fa1l20OQ]
<br />
<br />MANAGING. ECOSYSTEMCGJNSE.&VATlON
<br />
<br />823
<br />
<br />
<br />,..;IftheUlSrfe4era1g0ye~eUb~<itheCQlo~a;doWverp~in~ti.lte$~ ;
<br />in tl1~ lJ~ted States were tOl :reCognize.<the,.Qelt~~s':ecosy,stelill$4l.the.'
<br />au.~~~~1ryi':~~~~~?l'~(,io~Yer;w~t~Wtbe~ehtJ~~@~;gltl!;,):W:I>.r.e~Q1ingtlle
<br />!1~l~~i~~~ll%~~\llt,tj~t~~,?~'~wt1ierroOJ:ei,keM:~Q.d.ilj.Qn~;i~e.~..Q,f,~.;Pelta;'..
<br />.. .' .. .!. .d.;;~Q~gw;,;n'r~:ieffl.qient!i.J$,~j,~litb,~,:Wa;terjthatlnow:&~W$
<br />.g,~$ebt:~~i~mpgl~~,~g;~a;ter}:resoYcr(;el>l~~M..1!S .'
<br />. .~~@tel)jMd;;fJ.~.~~at~,,'M"iij:l,o:utlad.V(!rse:etfeqts
<br />, ;.3Vr{a:t~r'11,1,~.e~.;....4~~ou,.gll,:iithe;'DieltaSs,e!i=Qsy,$te~;..
<br />.ati:QJ\'iip::t\he;r~QC~ijQlli~M;Qlo}:a90Rj,:v:et;~ater,.. the.
<br />~~~ero:~n~ii@~~'iSwp~~gl~!il~oli1est../:i;;i ....
<br />: ,_ "!~ '.iii"i'ii~lf~ti:~1~ti!eM~~s,;tljei~ol~a;d9!iBive:tlA!!lta!s,~gall$tOJ'y,.t!1e.
<br />,~tilJ.~o~;';'~~}I,ip~ij'9i.{jthait",/~pe!!~~eri ,\nta,pagel}.1eli\~j ..r.anq,. e'Splores
<br />. . ~;I1c~:t'Ya;tiqn ofj:b~" ~l~fsi.~~ys.,t,eJl.l:\$.;;a.eQ~'!,gle:~
<br />,t.!!~',s;Q,Dgb.flYit~o.trQU~~;f'~;d7;l~gql~te~,:!r,tbe.!p~,QbleII\ of
<br />~~~ltat\i1it~qQ~~t.."~:~J:,~~tely,;()p,.e of iJ!lsti~tiQrial/~4
<br />. . ,*,~~,j~lt~!','ecosy~t~~,.in~1\J.4e ~~g
<br />.' .' ,. ':>.~n~;.;tP!':'I%\tP~9~,t;'JD,e~ta.ec;9~}'$tems;..
<br />,.~~~~i~~;,:;~~~~~ili?~~~a",,~~o~;,y~teni,..
<br />. ......'nrel~~..;;:~ge~~~A~~u~~fe~j"~~~gm~~et.
<br />.. ... . ... . .... . ..... .. ..... '. .., ..}.., ..., .~~g'~()~"i::~~i:(~x:.~~t~,!pfese~at.:ion;~4};m~rea$jng
<br />'publicp~Ji:ticipClt.:ionin Colora;po~y:er.dec~ions that affe~t.the;I:>elta.
<br />
<br />; ...:Figure 1:',1be:€olorado",'River.Delta,.200.0
<br />
<br />
<br />
<br />='
<br />
<br />
<br />~ 'i:
<br />
<br />
<br />. II~ 'FHEiDE.L TA.;
<br />
<br />;';:.: ).,'.;..,
<br />
<br />
<br />BAJA
<br />CAl:JrOW
<br />
<br />~~j<n01\temporary (.jeo~phy .
<br />
<br />. '. ','. ;.;,~:,:;'.
<br />
<br />'."~(;plota.d()Rivir! flowsllitdugh,niI\estates intwo,co\lI'\tries. It$
<br />.h&a:dwatets.lie:,ih the. RO,Cky,:MQUntairis.;of::theUrdted, States.inthe: high
<br />peaksiefWyoming and.Colorado;more thaa,lGOO mi:1es, north of the Delta.
<br />Th~eolol'a<io,Riverwat~~d\~~Qmp~s~'2:Q;00P.;sq!.;l:are!il\Ues,2QOO of
<br />which a;reinMexico. Thecurr.entextent.ofthe;Delta;:lies,completely within
<br />the borders of Mexico (see figure 1).
<br />
<br />.....,..."."."'....
<br />
<br />; '",,((
<br />. 9. n. t.1$..Colorad();Riv~r b~lns~!;e8 \1ft! Colorado, ~ew Mexi.~, U~ and. Wyoming
<br />lnthet1pper,Blsln,aa4cAdwNfC~l'l\iaIUld,Nevada in: the Lower Basin.
<br />10. .SignifJcu,.t1y, the",wofl:heRl,v.e~:v.elY' igl\otec18C(llogical~ideratio~ k\the
<br />bPinUl\tUthe'paSaa'p~ii\'t.992; of \:be Grand. CIlI\YonProb!dion Ac:tQf 1992, Pub.l,..102-s75
<br />81$01-1809,106 Stat. 4600, 4669-73.
<br />
<br />
<br />The tJ.S.-M~xii::op<>rder followstheColorac:l9RiveJ;' for about 24
<br />mijes betweensouthwestemArizoria an4 ~orthe~tem Baj~CAUi<>~~The.
<br />Mo~los Dam m Mexico stancls as the last major struCt1Ue.P~~i,river's
<br />mamstem.>The"pomtatwhicl\the mtemationa:lboundarydiver$es"Romthe
<br />:~~ .(;~~~'.SOUtheast1s known asthe'Sou~rIYIInte~'tiol\a1
<br />
<br />In Mexico, below the SIB, the river.~~3iluvialpbliJ\'f9#abrpad
<br />delta. The Delta is presently confined. by levees and el'\~o~paSSes
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