|
<br />and Over the "ntlr~ wat"r~hed by y"ar ?nor!.
<br />
<br />I
<br />1
<br />
<br />Study Reaches
<br />ThIs report provldGS llood data for the 81g Dry Creek
<br />valleyfr0011tsJunction"itotJle,,out'1PlatteRlver,upstreaf:1to
<br />the Arapel,oo-JoJglas Cownty Ilne,J dlst;;lnceol about 7.5 stream
<br />miles, for t'le Little Jry Creek vallflY frOO1 the upstrea'" 'lnd of th e
<br />bo~. cu Ivert at $owth 3annoc;'; Streut upstr'lam throug~ Cherry 1-1111s
<br />andJreenwocd"illagestoEnglewoodDil"1,about6mllas,<lndfor
<br />Greenwood Gulch trarr City Ditch upstre;;lm to South Ulster Street,
<br />about 6.4 strea~ mllos.
<br />
<br />~oodr;~ntr,,1 Impro..".!:::"nt..;"..
<br />IJoFederal improv<lr:lentshavebnenconstructe(j In the gig
<br />Ory Creek bas i". A ',larCh 1957 re~ort ~repared for the I ntllr-ColJnty
<br />~e910nal Planning r~]ssion by Dale 1-1. R~, a consultin~ engineer,
<br />rocomrnc,nd"d sovf\ral iMpr'oVf\..,ents for tho i:lT~ Dry Creek Channel.
<br />Sinco th;:t report, the urban growth 01 th~ b,lS i n h~s ] ncro~scd tl1<]
<br />1 I GOd d",'~ag(l po ta nt i ;;l I 01 t:,a 5 trOd'll .
<br />In the Little Ory Gree% basin, Engle\'lOO~ Cam, conplotc~
<br />by tio Wor~5 Progru55 A~minlstratlon In 1936, controls 9.5 S~Uuro
<br />",i 1<>5 01 the tota I 25 squ<lro mi los in tOfl ha~ in. Tho Garr. hCls a 3/i-
<br />Inc'l cor,crete pi pe out let and IOO-foot spTl1 W~Y5 arou~G o~ch abutMent.
<br />The reservoi r has ~ .,axlm"., capacity at crest 01 toe dal" of I, 7(,()
<br />acrt,~leet. Storage capacIty is suft icieflt to prevent overtoopi r>J 01
<br />tl10 dam by an I nter"1od late 10g lona I Flood. Qhtervation5mddeolthf.'
<br />~rojoct sineo 19~:) i 1Jlcak t',o structure h35 rOCllivlld nO IMprQVe"1'Jnts
<br />or m~ i nten~nc<:) duri ng the 1 ntcrv~ I. A sedlm'lnt survey maie In 1956,
<br />by t'IO 5<:,11 Ccn>erv~t: c." S,')rv i co, I nd I cetl'd t~'.G rOS"Irvo I r ~~d I os t
<br />7:}-ucr,) IO"t 01 stor~';e c~~"c:ty. $i r;ce ccnstr.Jction of the dJ"ll,
<br />eO "dj()~ f I ()odG hdV" oC<;lJ~~ed i" LI j j I" Dry :':re"K l>,,~j n d"d .1118
<br />STru~~ur("s floo.: control c"pabllTty ~"'s .,ot b"'e~ tested. SO'll~ "inor
<br />
<br />TI()Q~ I "(I i.,,~ uccw.r'",j nn ,;i 110', .::re,)< I", I ..0 r"<XH'd'; ,lrn "v>li 1;>1, ]i,
<br />r.o<y'''dinJ toe clfocTs of he OJ"' 01 n',a di~ch"'9Q~.
<br />Loo~ I I ntorests 'lad, T" pr I or y,~~rs, '~i den",] ano stra I ',]ht-
<br />
<br />
<br />_.c,c."";'.~,._. '.'"'' ___,
<br />STANDARD PROJECT FLOOD
<br />~.
<br />
<br />cnc.:l ~I'ttia ~r)' C.JO~; cI'~n~a! trr-C":]!' l'ri;!o",'ood ~c i.1crCJSO c~~"ncl
<br />
<br />CJp,)C I~y and rf>.duce 're'lu"nt 1 load I "Sr. R'ICent I V ~ box culvert I-,a$
<br />b2an con,;tr.Jctuu to o,,,,yey c i ftlo ":'r'l C,.cal\ 'J,,'J,,~ ~ S'lOp~ I rJ ccnt~r
<br />
<br />Potenti31 Floodllr::pto5
<br />Ghorry IIi I ]s Y i II~ge Ce,ter BldO'
<br />Q,dncy l\venlJe Ea;,t of t.;r"'lnwOQd 8ulc~
<br />H_c 1 lood~ sho,;n ~ro 3.5 feet Jnd 6.5 ''let abovC' the ',;ost doorsill.
<br />
<br />downstrca~ ;rom So~th 3;;ln~0Ck St~p,nt. To provTce tor t~Il ~xn~n51~n
<br />01 s~reefs, b~i Idin"c" "n(j $tat0 '11~r_'#~.y 10. th", lo'.e, r(HC~ 01 G~'.',~n-
<br />,,'ood Guleh has ~Nl" "Iter/cd .;ntll t~E) oha"'n"I Is nOJrlv Dbllt()r~td.
<br />n-",r., ~re no ~orps oj Er,)in~ers ~rDjec~s in no? Little Dry Cr-eel\ ~~,In.
<br />
<br />I.,
<br />
<br />"
<br />
|