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<br />PP,ST ~LOO[;S
<br />
<br />Fort Co II I nS area. ArGas of intense prec I pita t ion are n i ckec up ~ y
<br />r<ldar locatG!! at Li">on, ColorQ<lo. r~e '"'G,,,t'>cr S"rv it" For"c~<;t Olt Ice
<br />at Jenver, I n ~d~lt;on to rout i ne four ti"'es ~Q i Iv forec~sts tor tr(l
<br />aro~, ""J.Jkes 50ccia I fcrccasts ot sovoro stor,..,s an,j Issues I lood '>I~rnlngs
<br />gnd snowmelt advisorlBs as r~~uired.
<br />
<br />S'jffl/'larvoIHlstor;c<:>1 Flood,
<br />
<br />Flood fighting and e01erger>ey evacu"tion !llans ~ Thcro is
<br />no city flood disaster n I"n, as such, at Fort Colli nS. The l<1c~ I
<br />Civil }(!Iepseoftice coordlMtes planned disaster activities of a general
<br />n"turco1ndthoymoetperiodlcQllytorcvIOltdisBsternlans. Theyleel
<br />thot they havo adoquato organization and omcrgcncv eGulpm~nt to meet Jny
<br />conti ngency. Th is rerort shou Id b~ he I rlul in luture d ;sa~tor nJanni nq
<br />insofQr Q~ rotenti;)I llood threQt Is concerned.
<br />
<br />NotablefloodsontheC;Jche IJPoudreRlvcr In the stud V
<br />reach occurred in 1134/1, lilM, 1;113.1, 1891, laD.1, 1':l23, and 1''3D. T~ere
<br />'~ere dPparortly throw large flnod. 01 COI'lnarah Ie size in 18G4, 11J91, and
<br />I')O~. 1\ II of these flood. peaked n<JJr 21 ,CO) cub Ic leet por S8cond.
<br />The "104 f 1001 ~;)s prolJab I y tho worst f lcod In ter,,>s of dollllr da",J'Ja~.
<br />~;o t lood i n rccc nt Y'"3" rs h",s ser i ou sly th r"s tencd t h" city of Fort
<br />Collins. It Isrerr.arkahle, Invionofthethroe large floods inap!lricxl
<br />of ~O yeor, that the ~Ighest peQk dischar~e In tho ~tuoy rOAch in the
<br />past 42yoarswas 6,IIlOcu'l;c t""t rer second ;nI938.
<br />
<br />Flood ,<"canIs
<br />
<br />~.ate r i Q I stora~ e on the f I nod n I a I" - 0 I te n f loata,> 10
<br />"",t-er;a I stored on the I lood plain ;s washmJ a..av durin~ flood In" to co Ileet
<br />at pOints d(>"P5trcar'1 ~r>d i,"~c<lo flO<"ld t IONS. Hlt' f 100<1 nlnln in tht'
<br />Cacho la Poudre River stud v reach for this report is relative Iv clear of
<br />sucr. materia Is and nO nro'J le'Os In t.1115 rcs~ect are ~nt;cirated. N~ere
<br />~torc,,1 f 10dt'IiJ 10 "",t,-,rli\1 ;s pres"",1 On "he flood p lilln tv; "'1 It d"",n
<br />In s=e f"3~ion '>lould Ins~re ~~il;nst It:; creJtin'1 Jd~)tional flo.od 'i"l"r~.
<br />f;rilncl1es. logs ilnd otl",r d"briswQShOd dONn Irm upstre"", rei\ch"s in the
<br />,""ur,ta I ns c"o. a Iso caLlse "rwl\lms ~y catch Ing on ~rldge ~ iers and reduc i ng
<br />~h" naturil I I I".. oronl nC',.
<br />
<br />A~nual peak f Io.;s for the Cache la Poudre Rlvt'lr ne"r
<br />F<1rt Coil; ns arl' ~v<ll I"b Ie frCl'1 U. S. ["eol09;cal Survey records ~LJ~nln-
<br />e>ontod ~y thoso 01 t~", Co lor<>do S:t"te (n,,; neer. The.se f 10>1 record, ddtc
<br />IrOCll332tcthepresent. The Cache laPcudrel.lve.-throughFortCollins
<br />o~;ns to oxc~ed chilnnel canacltv i\t i\ oe"k dischi\rge 01 about 5,800 c.f.s.
<br />T",fJle3sho.;sannu(!1 p"","dlsGhlOr,l"s In oxcessot cha.onel cdrilcltv flt the
<br />gage upstream f.-or1 rort Coil i n5. '>I~ic.~ Is Ind Icetlv~ of neak flews through
<br />t.1e city. :.1Qst of the hhtoric,,1 Flood "Brratlv," for '"Flood tl"s<:rirtio~s'.
<br />\'IJS taken Irom U.S. Geologic",1 SurvflY ~'dter Su~rly P",per ''J'J7, 'Tlood'; in
<br />CoIQrado".
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