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<br />Silt Project
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<br />Colorado: Garfidd Count)'
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<br />Upp~r Colorado R~gion
<br />Water and Ilo,,"er H~s()urces Sen'icc
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<br />The Sill Projed i~ in Ih.. wt"~t-ct'nlral ~etinn or ColoradQ
<br />near thl' town~ of Rille and Sill. The projo>et prm"ide:'l for
<br />~toring ml' no....!! of Rint' Cct"t'k and pumpin~ Willer from
<br />thfO Gllorado Ail/fOr to iner..a.... thO!' irrigation waif-I' for
<br />h,';91 aerM of land, Principal rl'alurt'~ of the project are
<br />Rill.. Gllp DlIrn and Rt'M"l"'oir, a pumping plam._and a
<br />laleral ~~slem. E.i"tin,lf canals and laterals hs\!> ~n
<br />u~ and T('habilitated whl'tt' nt'("t'''i'lary. Hl'Cr1'81ion
<br />faciliti~ haw bt-t-n l-on..tnu'lffi at Hin.. Gap Hl'~t"..oir.
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<br />PLA:"
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<br />Projt't'1 ~toragl' is in Rille Gap Rt>....rvoir. formt'll b~'
<br />HiliI' Gap Dam nn Rifle Crt'l'k. H_"""ir nchanjz"l'
<br />relea".." .m~ mUll.. from Rill.. Crf'l"k to ..,jsline diu:'h!'s to
<br />m....' downsttf'am irri1!:ation nl;'i"(h. Projt'C1 watli'r i~
<br />rli'lea~ dirl'('d~' into Oa\'i(' Ditl'h, ",hich had lw.-n ahan.
<br />donl'd but ha~ lWf"n rl'habilitatl'd to ,"upply irri,lllltion
<br />wat('r to projt'1:t land~ on Da\i.. .\t..~,
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<br />Ht'~n'oir rl'it'llSl"~ ;Uf' madt' from Riflt' Gap Rt>....n.oir 10
<br />mfi>t down.'llream .li\'f'f'!Iion ri"llI..'1 tlf ntlnprujO!'Ct landll,
<br />Th_ rl'll'a_ allow additional di~'l'r"ion~ from F.ast Hillt'
<br />Creek up!llream from Rill,," Gap R..-.n;oir for projt'1:t
<br />U!\f', Dt'Ii\l'roo throlUl:h the Grll>>ll Vallt'y Canal. lhi.'ll"l-
<br />chanlt.. w8t..r prm"idell a full irri't"8tion supply for nt'w
<br />projffi landll and a lIupplemen181 'lllppl~' to proje-ct land.'!
<br />puvlomly irtillllt!'d wilh Han'e~" Gap Hl'....n,oir waler
<br />and Gras.... \"llll..y Canal diH'f"ions,
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<br />Thl' D~ Elk \'all..~, lau.ral "urrif'lI wal..r from the GraM
<br />\"allt~ emal 10 both full :md "lIppr..m..nlal ~f\ln' land"
<br />in D~ Elk VaJl..~'" Cmlf'r projf'('t or.-ration, HarH'~ Gap
<br />Rt....noir, which pr..\itlu"ly fill....-i and ..mpti('(! each ~f"ar,
<br />now <(orf"'! and ff'1!1Jiatf"O walt'r for a IOOlott'r irri1!:lIli"n
<br />....alIOO,
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<br />Thf" :,ih Pumping Planl. ...ith a l:apacil~: of 36 l'ubic f~t
<br />pt>t :<t"t'Ond, i" I,watl'd n..ar thf' Colorado RiH'r about ;::
<br />mil~ ..a"l..f Ih.. tm_n of :,ih. Thl.' 7,h-mile-lon2" Silt
<br />Pump Canal ..'tend" north"f",.t from thf' pumpin2" plant
<br />di!OCharlte lint'. ,'a~ inlt imltlltion WUI..r to land on
<br />th.. I""..r portion ..I IlUf\"~ .\1......... The- pllmpt"(1 "att'r i~
<br />ullt"d a~ a ~uppl..nwntal '\Ippl~, or a!> a rt'pla~'f'mt>n1 "U!r
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<br />ph. for projt'Ct land form..rly irrigated "ith Colorado
<br />Ri\'t~r waler pump<>J at high l'mot from thl.' Cactll~ Valley
<br />Ditch. It alIKI i~ u,..,.u a!! an t':lOchan,!:t' for nonprojl.'Cl
<br />watt'r to re-plaet' Uar.l'Y Gap R"!'l'f\'oir water for projl"Ct
<br />land~ abo\l' thf" Silt Pump Canal.
<br />
<br />Hinl' Gup Dam and H"~"nlJir
<br />
<br />Rifll' Gap Dam i~ l'(JO$tnICtro un Hifl.. Cr"i"k 3bout 5.5
<br />mil.... north of Hiflf', Coin" al a roin[ ..hi"re Ihl" crft'k
<br />cuts Ihrou,Ilh thl' Grand lIoi(back. Th.. dam i.. a zonl'd
<br />..arthfiIJ "lmclllfl' with a h..iazht of 1:;7 ft'f'l. a l'rl'!lt ll.'nJ{th
<br />of IA5tJ f....t, and a \oluml' of I. 7(18.0011 cubic ~'ard$ of
<br />material.
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<br />Thl' ~pillwa~" t'On~ist... of a "hort approach channi"L con-
<br />crl'tl.' inlt'1 walls, t"oncrptp (.rest ~lmctllfl'. and L'Oncrt'le
<br />('hUIl.' and ~tillinlZ ba"in. Th.. omld wnrh "on~i"ls of a
<br />CllOrrptf' inlakt' "lrUCtlUP, a 1>.(oot up"lream drclllar tun.
<br />rwl ~It th.. ~ate chamb..r with Iwo ~.~:;.f(M)t-,;qllarl.' hia:h.
<br />prl.'~,urf' gatf'!!, Tht' on'f olltll.'t diH'rt... to a do.....nstrl'um
<br />h.fool-diam"lf'r f1al-bnltom frPt'-f1ow tunnel. which
<br />di'l('har(tt'll inlo tht' spillwa~' slillin,!: bu!!in. ,-\ 7-f(Mll-
<br />diamt'tl.'r horN""hoe tunnt>! brarl('h..~ from the ,l("ale
<br />chamb..r and containll a 30-inch 1I1....1 pipt> thai convt'~'!1
<br />.....ater to a concretl' piP<' Ihal in turn di!'oChllrj;(e~ illlo
<br />Du\'i.. Dilch,
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<br />Rill.. Gap Re~no'Oir has a tOlal ('apucit~ of 13.hO~ a{"rl'-
<br />fl.'f"t and an acll\'e- eaparit~" llfI2.11~ >\l.rf'.f....l, ,,'ith a
<br />..lirfa(~.. art'a of 35fl <lere",
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<br />DE\"ElJ)P.'IE:'\T
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<br />Earl~' Hi:O>lor~'
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<br />'\10"1 ..arl~' ....ltlt'r... w..rr min..r... and pro.<p...ctoNo who
<br />Illrnl'd to irri!.!att'li aCTif'lIllur.. alter lwinll un"uec,""-,,flll in
<br />minin!.! an..mpt.... In !t):!n, -J.l1 familit',. w..r.. brou2"ht from
<br />:'\t'w York by th.. .\lidland Ruilroad Cnmpan~' 10 opt'"fIlte
<br />('(.al minf'o< in thp :-jilt arf'a. \\"h..n th.. railroad fail..d a
<br />..hort tinll' lat..r. th.. famili.." rt'main..d and turn..d 10
<br />farmin'l" in th.. \ icillit~,.
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<br />114-;"
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