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<br />Altcrn"u\'es ev;t\uJted in th" cnvJn'nmt'n!al "''':''Illcnl Include a N" A,'llnn and tile I'rnpo<.cd
<br />At"lj"n
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<br />Nn Aclinn .\II<"~n:.liH': LTtlll..r Ihe No ..\clion Ahernali\'e. Ihe ~el"OVeIY f'rogram w"uld n,,1
<br />lal.,. ,It'ln>n to enha"",e endangn"d fish hal>iUlt al Ela Wildlife Sa!\<;hMr)'. A l\<llCh I" ctllrain
<br />larvalra/(\rl"K~'lld.,'r'\iO\lldf1OlI>t-,'IlI"lrucl<'dlnlhcexl'tlllglevcc
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<br />I'rnl,..s,-d.-\l"t;"n' Tetra Tt'C"h Inc. of I.lred..cll/ldge, C(,loradowa.sconlraelt'd tnprc pare a
<br />hahilal/Tslur:uinnrepnll rUI Ihe Ela Wildlifc SanclU.lf)' (fetraT.-ch Inc. 20OJa) Surs'eydata
<br />wert' ('ollt't'led In August 20IK), The pul1""'" "rIlle report wa, ({l delernline lhe ll'l<><.lahllily
<br />,'h....;telen'I,n"flheElaWII<llifeS;tnCluatyandproviJeprnpo,,:Jml><.lIficali<lnSallhc"tcln
<br />I'rnmnteenlr;tinm<,nlnrbrvalt'ndangt'redtish",fn'lnlhenvet
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<br />Thepwl'",edaction wouldctln'IIlKttlneuulchlUifll:rca.'efll)".lhrnughfl"tl"erKymlhe Ela
<br />W,ldlifc S,mt'I",...1' lFlf!ures 21, Ikcau'c the h.,dwaler currently c'olllwl~ inun,wlion rreque,K'Y
<br />lstartmgalle"lhanlhe I_II 1'eare,"cnll.lhcnOWlhn>ughetlnditlOllwollldh,well1llcchangc('n
<br />inlllldatinn frequcncy. The apPl1,xilllale ,Iimen,ion' "r the n"t,"1l wnuld he a _~O feet-wide hntt"m
<br />w"hh along the lefl river han~, wilh 7;1 "de sl"re' If-'igure J). The IIlvert "fllle upstream n"j,-h
<br />would he sel "t devatinn-I.5JfI.O fct'j, EJev"I1<l1l .1.5-'6_0 red repn'scl,t, a fl\'er ,lisdaq;e
<br />IWlwcen 11.25Hcuhic feel per ,,,,,,...nd (ds) and !.\JKKl ds. The n"H:h wnull.l flllw lhrnugh
<br />"I'prox"natcly with the 1.11.)'('ar flow Cl'ent, The natural bad,,,,!:,ter eundlllon would prnv"k a
<br />WOller ,urt'aec e!e\'aIHlfl mth<: p'md, of "ppruxim:'le!y 4535,(j fect immedlalely I,d"re t1vrr
<br />",,,ter herin. I1m",ng Ihrn1J~h Ihe ml<ch. When the bao;kwaler n:ilehe~ Ihe notch lIlv,'rt cleval,,'"
<br />of4.531l.tlft-et,apprnlilllately I fno.'lufhc"llwnuldl>t-,,\'erlhcinvenand lfoO d,cnuld 1'''''
<br />throughthenut,-h. '\prr""chlllgthc5-yc,,,lloweveutwllerethcp',ndnalur,,lIy<:unm:,'1'lolhe
<br />ri\'erhylevceo\'crtopptng.apptl>lil11<1te!y l.fXKJdscouldp.."throlrg-hthcl\Olrh Atan,J,'O<l\'e
<br />the 5-ye:" c\'enl1he nOlch would hccome whm,"rged 'Illd fluws ovcrtnpr"'g the kve,' amI ro,,,!'
<br />wnlltdl>ce..senttallythe'amea.,"cc\JNUnUCI..~i'lIngcUl1JlIlOn',
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<br />The ~Idc ,101'<-" of the notch wuuld con'IllKled wlIh a 7:1 ratio 10 acc.mlll)(><l"le Ihe pedc,uian
<br />Ir~lllhalcllrrenllynNsallheprojed"teand.lllu",furcon'tructionandmaimenance.acccs,
<br />,\f"",l 2,OlJO cuhic yard_, ICY) "f levee material ""uuhJ I>t- excavated, EXC..val,'d m"terial., WOHI,!'
<br />h,:,,,ednn,,te.tllcnn,,trucl all()lT"'tle\'Celh,,t "",uld m"lnla1ll1hec~lsllng levcl"flln"d
<br />prulecti"n (curr~mly less than lh~ 5-y",lr return frc<jucnq 11"0<.1) tll ildi"Cl~nt rropcnies alkr Ih,'
<br />prole,"ll'compleled_ The nITs"lleve" wO\lld he <"nl1~lllKICd with an ,,\"er,l~'(' h'l' WHlth or II fecI
<br />,m<l ct.-'allon nf ,1~.Jll.O fo:cl Tlle nIT,clle,e.: ",-oul<l r.c 1.-",,,1,,1 I'l1lh<, 1:1" Wildlife <;an,'I""ry
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<br />n,en"lch"""J1dbcc"n'tmdcdln"'ilh,tanufnfCcsof\hc I(XI-ycarl1n'"]f'<-',,l.cVl'I'lltl
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