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<br />SECTION II
<br />
<br />Certain physical featurt,s associated with Slaughterhouse Gulch,
<br />in uddi ti.on to tl:e !'treet crossings, include tILe DqRG1~ an" the
<br />ATqSr railroad truck ~'rossinf.s located just "ast of )lio Grande
<br />Str"et, the dev~lted City Ditd; flu:l1e cn!ssill?, lucat'(,d e<<5t of
<br />the tracks ;Illd the P01><:rs Park d<.;tcntioll a:'c;< ,1.t the upper lilaih
<br />of this study at Powers Street and !iuro:! Street. ;\ more thor0ugh
<br />llescription is given in the ",,'eh by n;aeh outline tahulaled hel(Jw:
<br />
<br />STUDY AREA
<br />
<br />Sl;1ughterhouse Gulch is located ill the south-central portion
<br />o( the Denver Metropolitan area. It is an <"l.stern trihlltary
<br />to the South Platte River with the confluence located ap~rox-
<br />imately 1/4 of a mile south of Belleview Avenue.
<br />Under the indexing system completed in Project REUSE, spon-
<br />sored by the Denver Regional Council of Governments (DRCOG)
<br />and the Urban Drainage and Flood Control District (UD&FCD),
<br />the Slaughterhouse Gulch basin has been designated as Basin
<br />1-05-5700-01. The study chssfies the basin as nearing full
<br />development status within the imr.lediate future. Also, the
<br />channel is generally defineable in terns of the 5- to IO-year
<br />storm generated discharge ~hile having a significant flood
<br />plain. This classification gives the basin a Problem Poten-
<br />tial Ranking of 5 which denotes a high potential for flood
<br />damage. This basin is generally one of twenty in this cate-
<br />gory out of approximately 398 basins in the region.
<br />The study roach oxtends froITL the South Platte River to Powers
<br />Park on the main tribtltarv and from ltindermere Street to the
<br />corner of Datura Street and I.ittleton Boulevard on the south
<br />tributary. The st".Jdy are;l is Idthin the corporate limits of
<br />the City of Littleton ...hile the basin extends into Arapahoe
<br />County.
<br />A. DESCHIFnON
<br />
<br />1. South Flatte River to Prince Street - At present, a
<br />10' x 10' box culvert, a 66" RCI' and a 43" RCP con'fey
<br />the Slm.:ghterhouse (;ulch low flo...s from a point east of
<br />Prince StrElet to the riv(,r. Tl:is area has been developed
<br />by various commt!tcial uses including a r€staurant,
<br />liquor store, s~all car sales, ane the City o( Littleton
<br />maintenance shops.
<br />
<br />2. Prince Street to Windermere Street - This 3,000 foot
<br />reach consists of an encroached upon channel helo"- the
<br />railroad tracks and a somewhat natural channel upstream
<br />of the tracks. The stream is crossed hy Rio Gr:lnde
<br />Street, the D~RGW and the AT4SF tracks and the City
<br />Ditch flume. Upstream of the tracks, a development
<br />adjoins the the area on the north and school bus facil-
<br />ity adjoins the floodplain on the south.
<br />
<br />Figutn 1, Location iind Drainage Hasin Boundary Map,
<br />shows the relation of the Slaughterhouse Gulch basin
<br />relath'e to the physical features of Littleton, Colorado.
<br />The basin drains generally in a northwesterly direction.
<br />The druinageway crosses every major arterial fro!:: Santa
<br />Fe to University Boulevard and two major ditches,
<br />City Ditch and Highline Car:a1. The total n'lsin arc;:!
<br />above- Santa Fc Avenue is 2.02 square miles. 1'his study
<br />deals with approximately the lower third of the tetal
<br />basin cxtendin" from the S,luth FLato Rivpr to T'Ol.'cr~
<br />Park and from Windemere to Datura. This south tributary
<br />is approximately ..37 square mil<:s in si:<:. The south
<br />tributary area considered in tte study extends approxi-
<br />mately a half mUe above the confluence ".ith the main
<br />stream at l\'in<lcrmere Street. The channel th;:llweg for
<br />tl:is basin is located .ill \'.indcn:l<.'rc Street to Littlet,Hl
<br />lloulevan.l theu o<lsterly tlJ,,'arus lJatura Street.
<br />
<br />3. Windermere Street to Datura Street - liere, floodplain
<br />conditions change quite drastically. This two block
<br />Clroa ha:i ~<:en dev<:lopment l;hich ha~ totally ~"vcred the
<br />Channel and the drainage area above it f1'om the area
<br />below. A 42-inch storm sewer exists through thi~ reach,
<br />l,hich con~-eys only the low frequency fIo',s. t,s tho
<br />channel has been obllt,.:rated by developmer:t, tne poter:-
<br />tial flood damages are high in tillS r"ach.
<br />
<br />4. Datur<< Street to Po",.ers Park - Through this reach, the
<br />gulch follows Berry Circle. Houses ~djoin this ~treet
<br />on both sides, some located w..ll al.>Dve the stre"t ",hile
<br />others sit l"vel or below the street grade. A %-i11ch
<br />storm sewer was recently constructed in the street to
<br />provide a continuou~; sewer from Powers Park to Winder~ere.
<br />
<br />The t0l;,l thaI",,,,\! l','ngth of the study area is approxi-
<br />~Ktuly 1.7 milus, SOl of which exists ~s street.
<br />
<br />s. South Tributary - The south tributary. "huse confluence
<br />is just dOh'llstrO;lm ofll'inderr.leTe Street is seweredby "-
<br />42-inch pipe from the gulch to the corner of Pow,..rs
<br />Avenue and WindefTf,erO Street. From this point, along
<br />liindermere to Littleton boulevard, a 36-inch concr"te
<br />pi~e extends to 11 junction box at the intersection of
<br />Littleton HO\llev:nd an,! Windermere Street'. .'\n IS-incr,
<br />S,",l;er <'xt<,nds upstrellm acro~~ thfl l'lood l3'..n p"rk Shopr i.ng
<br />Center to ))~ tura Street. The d~'ve1 opr:ler:t ..lollg thlo;
<br />tributary is c~'mmen:ial 1.1". the upper re;:lches and office
<br />an<! I'clleralLy. high density rcsl.denti,;.l l;se,; alung
<br />Wincermere Street. The floou dam;lge pctl.'ntlal is hi,~h
<br />in the lower part of the reach.
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