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<br />1990" Colorado Rood Hazard Mitigation Plan (409)
<br />
<br /> 20th Century "Monster" Rain Stonns Front Range Springs_ In Durango, the fire department had its
<br /> emergency operations plan in effect and came
<br /> storm Name Date Maximum Rainfall very close to evacuating residents of a mobile
<br />LivennorelBoxelder May 20-21, 1904 8"+ home park on the Animas River
<br />--~-------_..._-- ---~-- ---- --------- -~._-- In the spring and early summer of 1995, signifi-
<br />Puebl<>'Penrose June 2-6. 1921 6-12" cant flooding impacted the lower South Platte, the
<br /> ---- ---~.
<br />Cheny CreekJHale May 30-31, 1935 12-24" lower Arkansas and the Roaring Fork Rivers_
<br />-------.- ~.__. ----.---- Most damages were experienced by agricultural
<br />N_ Colo_ Front Range Sept 2-3, 1938 6-10" landowners_ In response to the floods, the Col-
<br />-------'--~--- ----- --_.--~- orado General Assembly authorized
<br />Rye (S_ Front Range) May 18-20. 1955 6-13" Multi-
<br /> ~---_._---- -- ~--~--------- Objective Floodplain Management studies for all
<br />Plum Creek (and others) June 16-17. 1965 14-16" three rivers_ The intent of the studies is to develop
<br />Bi9 Elk Meadows May 4-8. 19t19 6-14" viable, politically acceptable flood mitigation rec"
<br />-------~----- ----.--------- ------------..- ommendations, which will reduce future flood
<br />Bi9 Thompson July 31, 1976 12" damages_ Currently. all three studies are ongoing
<br />,- -.---'--- ------------ ---_._----_.._~ ------.--------- ...--' with recommendations for flood mitigation mea-
<br />Frijole Creek July 2-3, 1981 8-16" sures expected by the end of 1998_
<br />---.---- --.- --.-. _._-,,- --- ------------------ . ---_.- ---. ---------- ---
<br />Fort Collins July 27-28,1997 14_5" 2.2.1.2.1 1997 - Flood Event
<br />..______ ________ _______._u --- ~-,----_.__._-- --...-..--,------ --
<br />Pawnee Creel< July 29-30, 1997 15_1" Description
<br />Source: .Colorado Extreme Storm Precipitation Data Study' by Tom During the summer months, all of Colorado is
<br />McKee and Nolan Doesken, Colorado Climate Center, CSU May 1997 subject to convective thunderstorms. When suffi-
<br />Figure 2-3 cient humidity is present in the atmosphere, some
<br /> of these storms produce large amounts of rainfall
<br /> in short time periods_ The source of the humidity
<br />mobile home park on the creek's edge with losses is typically moisture from the Gulf of Mexico and the
<br />estimated at $1 million_ central plain states which, under certain weather pat-
<br />In July of 1993, the Town of otis and the unincorpo- terns, can drift into eastern Colorado_ Also, in mid and
<br />late summer, a monsoon wind circulation brings mois-
<br />rated area of Cope in Washington County and the City ture, originating from either or both the Baja California
<br />of Yuma in Yuma County experienced a weekend flood area and/or the Gulf of Mexico, northward up across
<br />event as a result of three con-
<br />secutive days of thunder-
<br />storms_ Several homes suf- 1997 Flood Event Greatest Impact Areas 1
<br />fered damages and roadways
<br />were inundated with loss in _ un"'>,,,- "'" -'-'<:'.'__'.-.H,..J~, .. - - -c.. __~ , ~.. '_.' ~__;':..l+.':':~.~-_\:. ,l.~ ,,~
<br />excess of $650,000. In otis, a Larim~r County Morgan County
<br />flood control and storm ,
<br />drainage project protecting the . Spring Creek drainage In Fort . Shaefer Draw north and
<br />northern half of town worked_ Collins Into the Town ofWeIdona .
<br /> . Falrbrooke and Clearvlew ,
<br />On August 10, 1993, flash .". .'-~';""n '.-t_'.' -.: _J:.l.!_~,.I.,...,..1."-'_,
<br />floods occurred on several Drainage channels in. western
<br />creeks in Delta County_ Two Fort. Collins Logan County
<br />roads were washed out and a . West. Vine Drainage atea In ,
<br />flood fight was conducted with norIhwestem Ft Collins . Pawnee Creek northwesll ~
<br />sandbags on Robideaux Colorado State Un/ve1$Jty local west of Slerfjngin At.
<br /> . wood, and the City of
<br />Creek near the Department of drainage atea
<br />Corrections Detention Facility_ Sterling
<br /> '.;.....;,.(. ,-,.",.y> .,=, .--.... :f.;.! ..= .~. -;,!:-,. ."J..UIlL-J.>, ".... .,~.,."
<br />On August 26-29, 1993, gen-
<br />eral rainstorms caused f1ood- Additional Declared Counties I
<br />ing in Archuleta and La Plata
<br />counties. Subdivision in . Numerous streams and watercourses contributed to flood dam-
<br />Archuleta County was threat- ages in Unco/n, Prowers, Crowley, Kiowa,Weld, Sacs, Otero,
<br />ened and roads damaged as ClearCree/(, Phll/ipsand Elbert counties.
<br />the Rio Blanco overflowed Its ....c..- _,_,,- .,-.!-.oJ_,," J'.,.1.... ,~.,",~ ._!;..;-' _..~. ",' . " '.__J.,,-,,n.;:.G...;, ,',L"'" I
<br />banks south of Pagosa Figure 2-4
<br /> -. - '.~,~ -, ..- --.--' - __-'__w,~, A. _ ~.~.._.__+_._._.. ...;.A, ..!_ ,:.~l~:'...~._~. ."-,,-,,,-.
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<br />Chapter 2 " 4
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