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<br />1::,j!l11V!1I" i:U:U.Si!3iEF:1 & McKEE In':
<br />
<br />Mr. L. Scott Tucker
<br />Pebruary I, 1977
<br />Page -3-
<br />
<br />of Stapleton Airport has: proc.uced c ,:onding arE,a J:)(~tween
<br />the runway and Mon1:viE:w Boulevard" T::'e adjacent properties
<br />are flooded l'1ith an 8-year st.orm 'even I: .
<br />
<br />6. Drainage problems ~n the Ransevi0~ a7ca, located upstream
<br />of the Highline Canal in the vicinitv of So. Dayton Street
<br />and Wind,sor Gardens, are caused b:( t,","nped draina.qE~ a.nd
<br />lack of 2Ln adequate dr'ainage outl~?t.
<br />
<br />'~ecomnended Al terna ti VE, from phase 1\
<br />---. --_.~~_._----
<br />
<br />The r2commenc~ed alternat.ive plan of th..::: Phase A study Ida:; review--
<br />eel and, found to be the best solut ion r \\.'i tJ'] cl2rtain ElOd.l fica tions,
<br />:oor t,~le flooc. control and drainage pr'obl"j".s for the watershed.
<br />The alternative plan for the Westerly Creek flood control and
<br />drain1ge improvements (AI ternati ve 3A '^,ith modi fications)
<br />Bpeci fies: (1) no improvements fo:c :]):'03 ir.age Area Nos. 1 and 2,
<br />(2) improvements to Pond A,-13 so that '.t '"i.11 have adeqllate
<br />capacity and protection level for the IO~-'year storm event, (3)
<br />const ,~uction of drainage pipes and fl:'cd dn,1,nel betw,een Pond
<br />l,-.B a:1d Lowry Air Force Bas," to p rovi ,'k dra:',nage outlet for
<br />1:he upper watershed, (4) construc t.ion c ,[ ,,:he Dayton Dei:ention
<br />Pond t.O detain storm water from part, () f ':J:'ainage ]\,rea Nos" 3
<br />and 4, (5) construction of drainaqe fdciJ.:lties in the Hang",view
<br />area 'to solve local drainage prob lem!3, (,,:: construction of the
<br />Upper Lowry Detention Pond to sto ce '3::crm wa.ter from upstream
<br />of thl" pond and to relieve floodinq problem:; at :Kelly Poad Dam
<br />to provide an adequate protection :Lev",:!, (ja contain the 100-
<br />,'ear !3torm without emergency spillway OVE:J:flow and to pass the
<br />PMF safely), (8) construction of a fl(~d channel along E.
<br />i.lameda Avenue to convey storm water f,-om the upstream area,
<br />including Windsor Gardens, 1:0 the UPIX!r Lowry Detention Pond,
<br />(9) channel and cuI vert improvements (10'''yea:c design) from Kelly
<br />Hoad Dam to Stapleton Airport, to reduce the flooding poten1:ial
<br />in this area, (10) flood proofing Stanley Aviation Corporat,ion
<br />to reduce flood damages, and (11) no j.mprovements across
<br />,:tapl,\ton Airport and downs1:ream of Si::ap1"ton Airport..
<br />
<br />1!t,<3ster Plan Drawinqs
<br />
<br />Naster Plan Drawinqs were prepan,d on mylar plan and profile
<br />sheets at a horizontal scale of 1" = ~OO' and a vertical scale
<br />of 1" = 10' (with some exceptions as J:.oted on the dra\olings) .
<br />The drawings are presented i.n Volume :i:: a,t a reduced scale..
<br />For the area downs1:ream of Kelly Road Dam, informati.on shown
<br />on the drawings includes (1) t.ypical channel and box culvert
<br />cross-section, (2) right-of-way requirements, (3) flood bound-
<br />aries for the 10-year and lOll-yea::' S1:C1:11S under existing channe1
<br />
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