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<br />SPINNEY MOUNTAIN
<br />
<br />PROJECT
<br />
<br />Th(. City of AUrarJ. Color,.I{lo with
<br />the a~S.SIJnce of the ,'vtdjor Civil Works
<br />[X'p..H:'lWnt of R. w. Rl-'(k ,lOd A....o-
<br />(-idleS' WC\lern DL~gn OflKt'lsdevel-
<br />opin~ th(-, Spinne~' .\.1oun[ajn D.Jm
<br />"mJ Rl'scnuir ProW\.! to hdp owet
<br />the Cily\ Woller suppl~' nCl'd.. for Iht.
<br />imml'ui.Jll' fUlure dnd Into the lhl
<br />century. Conmunion of the Project
<br />beg.!n in tht' sprmg of 1980 .lnU I'>
<br />'>ChPduled for completion in J.lle 1981.
<br />[he' I'flJJl'U {'fll.Jil\ tilL" (Un.,lrul.
<br />Iron of <In e.H!hfill ddrn and r~r\loir
<br />.Il ro.... ,I\{' South 1'I,IUl' River. 130
<br />hiKhwdY milt's southwest of Denvpr,
<br />/'" llll' I'IUP'/'>C" "f '['Jlmg ",..Ie'"
<br />origm.uing wesl of the Continental
<br />DI\IIJl' .lIld divt'ftl'(llu Ihc~ \',1..1 ..Iup"
<br />viol the Homesl.lke ProJl'ct. The Spin-
<br />ney Mountain RC'>t'rvoir will also
<br />storc .1IlU allow full util'ldlion of
<br />W.lter available from thl' City's ri~hfS
<br />III the South !',.H" t'luuldry ..Ired dmJ
<br />will provide rp-.('rvc ')toragt' for peri.
<br />oJ') Oll'~UcrIlC lhoughl .Jlu.! dunnH
<br />emergenn outdges of conve~',.mce
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<br />IJAh.' ANIJ UUfll' WOIO(~
<br />
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<br />tacilitie!> oi the Homest.-.ke Project.
<br />rill' pf{'WIlI \y..t("1I1 .\ vulnprJbJc II}
<br />both n"Hurd! droughlS and bre,d(-
<br />dowm in il!> wdtcr colJeclion dnd
<br />con....e)'dnce syslem.
<br />Thl' mdjor f",llure,> of Ihe Spinner
<br />.\-10untdir, Projecl include a r~rvoir
<br />wilh an active !>lordH<' CdP.Kif)' of
<br />-W.{X)() acre-ft."1 ,md surface drea 01
<br />2,520 .-Kres, a 4.100-foof lon~ dam
<br />with d 25-fool wrue ere')l dl EI 8710
<br />,and hl.'ight ot 95 feel. ')(,'rvicc and
<br />'1U~lliary spillways, uam outlet work!>,
<br />Homeslake diversion !>Iructure and
<br />UHlvl'y...rntc th...rIUll'J, dnJ W...rlcrfowl
<br />dnd recreiltion taciJifie!>. Of PU1icular
<br />nute i\ the ullrqUl' dl'slgn of the ,>Iil.
<br />ring bd!>in which {'n.lbJes di!>Charges
<br />~1l',llt'r Ih.1I1 1'J,4lW.JI(' (urrl' rn~_
<br />~.t'ar ff{'qucncy), which .Ire 100 IM~{,
<br />lu fWIll...r hyJr...rulic.. jump within Ihl'
<br />stilling basin, 10 be swepl Out by il flip
<br />buckef dnd impinge hdrmlessly on iln
<br />Meil uowmlream tram the !>lruC1ure.
<br />lRldiled wi!>mic investigdtion, un-
<br />~...rrJlk'k'fj In Culor.lJo. IOCdll..J two
<br />(.,ll).>~rt. fdUlls situilled in tht. vICinit).
<br />uf thl' prOllxt, thuugh nut wrfhHllhl'
<br />JClual ddm !>ite. (Similar sludies mily
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<br />R.W. B~CK AND ASSOCIATES
<br />
<br />t...c....UIl'.-"OC()o.'>l>LT..'n
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<br />\t..nu .......""<;TOf'"
<br />
<br />'N'''N 10......110
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<br />,.r"N"'H"tl
<br />'U....'N l>' ""'.......lHI...\l or .."~l .....,
<br />\l.nll........l01.,.'IlOoI.U~
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<br />I{ener..:ly be required in the future
<br />10, dl'....elupOlt'1l1 of d...rlll ..ilt',> 111.11
<br />wt're formerly considered free of
<br />'>l:'i..mic hdLdrd ~-'Causc of grc.l:,-,
<br />concern by reguld!Ory bodies for
<br />rl.lm ~lf{'ly.) The df'sign of lhe t'm-
<br />b...rnkment W.lS modified 10 mdkc lhl.'
<br />d,Hn inhl'fenlly r('<j,i,>tanr to lhe pol('n-
<br />ti...rl eH(;'(h of l'drlhqudkcs of I<[('hll'r
<br />m.ll{nltud(' of 6.2 a'>'>OCiilled wilh d.,-
<br />pldCl'nll'nt dlong Ihe fault thilt pd..!>l.....
<br />wilhin about one mile of the d.lm
<br />!.lIt'.
<br />The Firm Jlso handled illl pwmll
<br />.ljJplr(dtiom ,nuJ ref.!tl'd ...rllivilil''>.
<br />including the environment.lI as<,('s!>-
<br />Int'nt ...rnJ nUIll(;'rou,> Ill'gulr...rlillg
<br />me('tin~s wilh variou!> dgencies, nP('"(',-
<br />""y III ...r(lu.llly (.!,I...rlll Ix'rlllr'" III
<br />order for construction to proceed on
<br />..dlt'dulc. Si~ SI...rll' !-Jl-'rlnih, l('ni/i-
<br />cate!> or reviews,lwo Federal dgc'nq
<br />JX'rmit!> Jnd County condilion.!1 uw
<br />and geologic haL.lrd permib wert.
<br />required forcomlruction ilnd OJX'r.l-
<br />lion of Ihe ProJl-'Ct.
<br />The Parrnt"f-in.Char"w is jdml.... V.
<br />WIJlIJm)Un. Thl.' ProJl'l"t i\1drldgc..'( 1\
<br />jdmC.... E. Alverson, ht.'Cutl\fC EnginC'('r.
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<br />(1757
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