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<br />SlITnllWl'Y
<br />'I'alllal'i...k IIl\'l'ntlll'~- f(II' tJu_' ('(llor'adl),
<br />Al'kan..as, and PlIl'gatoil'c Rin.'I's
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<br />1.11l1l<lry .2~. 11JI)(,
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<br />Badigl"olllHI- Thv T;unarisk Coalition receiwd;1 S,SO,OOO g,ralll fnllllthe Colorado W:ltl'r COll~en';ltioll Board to
<br />]It'rfnrm an ill\'t'lllory of tamarisk infestations Oil thc Colorado <11111 Arkansas Ri"l'rs \\'ithinth{' qatl:. This !'t'porl
<br />SUllIJllari/,l','" thl' lindings frolll this errort. Tht' purpose or this work was tlll'St;lblbh alld implemenl all ill\'l'nlol'," proto{'111
<br />Illat is l'l'cltltJllli{'al \II 11('1'1' o I'll 1 allcl \\,(lldd prm'idl: a l'le;lr ulllkrstanding of thl' t~xll'llt of the lalllari,...k pl'llhlem. TIH'
<br />Colorado Rin'r and '\I'kansas RiH'r \\'all'rsllt'ds are identified hecause Iht'Y ;ll'l'Ill'<l\'ily illfl'stt'd <lnd l't'pn'st'l1tlwo distill('1
<br />h Ipogl';' phil' l'onditinlls - tl tn'stt'rn slOpt' cilnyon sdting that is predol1lill;ll1t1y Fedl'l';lll:lllds and a front rangc prairie
<br />,<';l'l1ing tli<lt is I)]'{'dlllllillantly prh-all' agrinJlturallands, A surn-y of the Purgatoire I~in-r ill soulhcaskrn Colorado \\'as
<br />('lllllpll'll'd with local fUlIdillJ!, and this information is included within this ,SUlIlIlI:lIY n'porl. The rampa Riwr and its
<br />tril)1I1.1ril:s, illld Ihl' lu'ad\\'akrs of Ihl' Dohm:'s to ;\kPI1l'c Rl'St'lyoir Wl're also surn'yell; !lO\WnT, this infOl'l1wlion is
<br />nllTt'lIlly h('illj!, ;l1li1l,\'I.ecl and is not ~.cl at'nibhle.
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<br />III\l'nllll'Y - IllH'lltory ;IIHllIIappin,t!, \\crt' performed during the sunlllwr alld rail of :'!O(J:i alld monlinaktl \\ ith till' U,S,
<br />(;l'lllllgil'al Sury('y's (uses) t'!lllrls <It t'stahlishill~ a national on-lil11' datahas(' which \\'ould conform II) the \\'l'l'd lllappillJ!,
<br />,...I;IIHlanls dt'\'l'iopn! hy Ihc North .\Il11'J'iean Weed l\Jalwgcllll'lIt ..\ssocinlioll. Thl' basil' approach WtlS 10 liSt' l'xisling
<br />anial photography anti s;ltdlite il1l<l.e.l'I~' illltllll('all\JJ(ndl'd,l:,c :l\'aiJ,lhll' frolllcolllltics, ri"cr distrit'ls, soil and wail'r
<br />('onSt'[yation districts, stall' <lg{,llcies, A rillY Corps of En/!,int't'rs, N'aliollal Rl'SOlllTl'S COllSl'lyalioll Sl'!'yit't', US(;S, csr',
<br />and The Nature COllSer\'allcy, This inforlllation \,'as thcll "ground-truthed" hy a :.!-lllall tt'"mlo {'Onlirnl illkstatioll
<br />dl'nsity, lIlaturity, ttTr;1in, pn'S('IH'l' of natiH~ specil's, and sc\'eral other sill' dlaral'lcristits. (;I'S dala alld digit;1I pllllto
<br />I'l'mrd.... \\'ert' lakt'n illld shapl' fill's W('['l' dt,,'dopl'd utilizing (;IS l'ap:lhilitics al i\ksa Statl' Colkgl', On'r Hoo miles Oil thl'
<br />Colorado, Arkansas, and 1'1Irgaloin' riH'l's and their ma,ior Irihut<lril's \\'erl' sun'l'YI'd \Ising this approadl. This
<br />inforlllatioll, in Ihe fOl'lllllf slwpt' files alld ('haraderi....ti(~...; data, hilS hL'('ntrallsrol'llll'd into a dil!,ital GIS dalahast' \\hieh
<br />S(lOIl \\'ill he <lyailahJt. ollllh'l}S(;S ill\'asin' S[lt'rit's \\l'hsitl', \\'\\'\',Iliiss.or:.t,
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<br />FiIHJill~ - Thl' ill\l'lltor~' ."utllmar). for IhL' threl' rin'l' :-;ystL'IllS is prl'sl'nlL'd in Tahles 1 and:.!. Tahle 1 prt'Sl'lIts the gelll'ral
<br />lmlpping dala; \\IIl'n'as, Tahle:.! IItili/l's this infllrlllatiolllo dl'n:lop estimated l'lllTl'nt water and fulurl' Wilter losses
<br />asslll'iall'd \\'ilh till' !;lI11ilrisk infl'sl:ltiollS and thl' l'stilll,lkd ('(J~ts for talllOlrisk conlrol and l'l'\'('/!,l'tatioll. Thesl' willl'r
<br />IOSSl'S ,1 lid t'Ost ('Slimak...; <11'(' hascd olllhl' 1110st I'('(xlll research and statislil:al analy."is availahle throu/!,h tll(' USl )A,
<br />.\'():\.,\, US(;S, t'SU, National Im.asiw Spl'dl's COllllCil, Tamarisk Coalition, and others, The r(JlIo\\'ill~ relll'CSt'llts our
<br />fillllings:
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