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<br />localion~, inclvd;n~ dTstance alon(l th~ main chaMel centerline,
<br />ele~ations at the streambed, and eln~~tions of the 10.year, 50-
<br />year, IClCI-'lear, and 50Cl-year flood&,
<br />
<br />Cn,"k exits the canyon ~nstrea'" !rO'l1 Fr~nktown. l-bw'wer, !rom
<br />d~proxlmately rclerence point I"~, the Cherry Croak IC0~year
<br />;Iood plain ;~, in ~onaral, of rejeti~ely unihHm dv"r,"IH ~i'llh.
<br />'^'i thin t-h i s r"ach 01 Chf'rry Crflck, lon-v",,, f Ino,l n 1,1 in oi dth~
<br />r"nqe trom ~!JO f",,1 to 4 ,000 hmt, Tho"" l;w'Ie ""r i "nee, ~rom
<br />the avora!)" flood p lei n '~i dth are, howe'/E'r, cui to local in
<br />arealaxtel\t.
<br />
<br />Tho FlOOded Areas 5h0~ the area tnat would be tlooded
<br />by the IOO-yoarand 500-yearfloods. Thetlood limits were
<br />located at each cross sectTol\ and the intervening flood outlTnes
<br />were drawn bas"d upon det~Tled topoqraChlC mappil\o, 9nqlnearTno
<br />judgment, and field observations, It Is, however, possible
<br />that more or less flooding Should be shown on the Flooded ~reas.
<br />For a specific sTtuation, where More detailed accurilcy of flooded
<br />area is required, th.. flood limits c"n be moro accurately estab-
<br />lished by determining the "atar surface eleviltiOll fram the Pro.
<br />flleor Retoronce Tablos and than locating thatoleviltTen by sur-
<br />vey on the flood plain.
<br />
<br />The major rortlon oi thnChI)rryCroek 111-yo.,r flood
<br />plain in tho study rnach Isinagrlculturill use. Fewbuildin<1',
<br />of any typ.. exist on thiS flood pi'aTn. Tho~" t'lM do n~ls1 arc
<br />locatod in tho downstream reilc.hesoi the'ltudy. TI""s",,reprl-
<br />marTly ,'grlcu I tural Iy orlnntcd e~CApt lor .1 fn~ rno;i~"nC"5 I n a
<br />resi dential area loc<'l'!ed on thE' ',xfrnmc rinht ~i1nk h",I~"en refer-
<br />ence points 6 nod 9.
<br />
<br />A reference line is shown on 1he FlOOded Areas tor
<br />Cherry Creek. Thlslil\e Is used for retarenCQonly dnd does not
<br />n"CeSSar I Iv coincide wi th the existing stredm channel e~en though
<br />il .....y be relerrerl to <15 such In thi5 report.
<br />
<br />Obstruction,; to tloodllOw,- - Snvoral rni\r,w,ws cross ~hc
<br />/1 "",t pi" I n at Chn rry Cr"" k I r I h" ~ ru,j v re',eh. T h<> ~', h v', i C~ I
<br />Char~cteri-,tic~ nf thQse ro,,<1waVs created coMI linns 11\ the o,tllOV
<br />..-hleh rc,sulteu in ion Inereas( In w"ter s"d.)c" nl"".ltlono i",",c-
<br />o i~to I \' u:>~treJrT' fro,", the:,,, ro"dw,ws r"~'11 on (~"'" .., '0 5 1 ".>t .
<br />Th<,' upstre<Jm water surl,'CO "Inv~tinn~ woul d I ncr""Sfl dra~t I ca Ily
<br />if th" bri'I~", ,""'~ is ~,ub,>li.nti"ll~ r"ducod by 1p.bris "sr~clally
<br />". those rr>a<lwi'JYs h,winq ~i"h "m~,~nk",(",t~. Th,.,~" ~i"hf'r w..ter
<br />'.ur'~c~ ",,,.,~+i,,,~'l """J"t 11"",< "",r~ ,v"~ thM ~''''~'' il\ thic, rnoorl
<br />.",,1 in,rH"s~ v"loci:i,,~ tr,ro~<1,". the ~~<;~",tr~ct.~d porlion', ,,! thl'
<br />
<br />Tile t lood elevations o;toown on the Prof i Ie i1na in t~!>le
<br />6 (lDPly lat..rlllly f.-om It",ch,,,,n..l over 0r05t uf the floodpliliM
<br />widtn. Road cro5sinqs dMd other topographic 1eatures Cdn ~ Iter
<br />the lateral t lood elevations. Depend IMg on whothor these featuro~
<br />,Iiv"rt nr hlnck Ilnw~, tho> /I<l<ld nlnv"tlon~ ~t th" n'l<Jn ot tho>
<br />tlood plain may be higher or lower than at the ch~nnel.
<br />
<br />b;id~r'S.
<br />
<br />rlood pl~ln widths ~ary from one area to another through-
<br />,
<br />out thA study reach. The IOO-vear flood plain width varies trom
<br />J mlnimu~ I\car 150 fcct to a ~J~I~u~ near ~,OOO feet with ~M aver-
<br />arl'" of I ,4()O teet. Flood plain widths i"cr,,-"~se rapid Iy ~5 Cherry
<br />
<br />ThO ~"'tll~-' on ~Intes 20 I'1~O~'ln 5i <,hflw to" {)xtf'nl tn
<br />'.'h1ch f lood ~,ta~f'c, "" In,r'j,1-,nd ~. t~" tri'tM<.. '''' ~~prroci,,~I"
<br />
<br />~n,,{)
<br />
<br />1 ~cr'"",,, (1<;;(:"rc, UJ';j"",," 1 "0'" \:ol(',r",\(, ~,I;,t., li;1h~,lV ')(, ,)
<br />
<br />. ,;' , ..,.,~"-- "~ ;' ,,",', ','., -', .......,., '"."." '.;""
<br />~"ur"v r.)"," ," ", ","U" ",,,I "v'",, " ,,'"
<br />
<br />15
<br />
<br />If
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