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<br /> Standard Project Flood
<br /> The Standard project Flood " defined .. ", flood that
<br /> ~. ", " expected fro,"- ", most Severe co:nbinations ., meteorological
<br /> . , .
<br /> . .w . . . " . - " . 0 ~
<br /> . . . . . " 0 0 . . ~ . . '"' hydrological conditions--excluding
<br /> " o. . ~ ~ ~ ~ ~ extremely ~are co".b1~atio,..s--
<br /> "
<br /> 0 that " considered characteristic 0' the geographic"l region " w1'-.1ch
<br /> .
<br /> ,
<br /> 0 . 0 0 0 0 0 0 0 g 0 0 ", drainage basir. h located. ", Standard ProjeGt Flood
<br /> . . 0 0 0 . 0 0 0 0 0 repre-
<br /> . , . " 0 N . . . 0 N 0
<br /> . i w . ", reasonable limits expected flooding. Standard
<br /> . 0 w - w . ~ . w 0 " sents upper " ",
<br /> 0 . ~ '" 0 N . . ~ .
<br /> prOject Flood, with . peak discl'.arge 0' 55,IOO cubic feat ,., second
<br /> . " ", vicinityof Animas Bridqe, h larger than ", September
<br /> 0 Street
<br /> .
<br /> M a - - 1904 flood record (45,400 cubic
<br /> N w . . " feet ,., second) .., almost twice
<br /> . . . . . . " .
<br /> . . ~ " ~ w ~ N - .
<br /> ! . . w . . . h, peak discharge " the devastating flood 0' :-lay 1955.
<br /> " " . . . ~ ~ . ~
<br /> . - . . .
<br /> . > g " . . . " . Flood characteristiGs " h, Standard project Flood ".
<br /> 3 ~I . - > . 0 . ~
<br /> , , ~ . , 0 e l averaged maximum conditions within eo, study shown " Table
<br /> 15 0 0 0 < < 0 " a~ea m
<br /> U
<br /> , N N 0 . " 0 . N N
<br /> " N N , N - M N ;.
<br /> 0 0
<br /> ~ ~ 0 .
<br /> " . Frequency 0' Floods
<br /> ~ N ., -
<br /> 0 " .N
<br /> U - B . , '" Intermediate Regional "..., b defined having
<br /> 0 " 0 .. "
<br />. N " ., . .
<br /> 0 . " . " frequency of " " "" deaignated
<br /> " . .N , , 0 0 " 0 w w 0 N M average occurnmce once years n ,
<br />~ 0 0 " , , . . " , . 0 . . 0 " N
<br />S .3 . . 0 " - - . " . 0
<br />0 5 0 < . lOGation. " " i."'practiG...l " 1'lsi::ign , frequ""cy " tlee qreater
<br />~ N
<br />" N Standard Project Flood. Floods larger H", the Standard project
<br /> 0
<br /> ~ ~ "..., possible, M thc oombination " factors Co
<br /> m necessary pro-
<br /> " 0
<br /> 0 dUGC stlch lar<;" flows would rarely ,,' " hazard
<br /> " OCcur. purpOses
<br /> ! " evaluation, H " recognize that either " these floods
<br /> , N " important "
<br /> - .
<br /> x " 0 , successive
<br /> ~ I . , , 0 0 0" occur " n, year .oo possibly " years.
<br /> - - 0 0 0 0 ,
<br /> . - - 0 " ~ " N , -
<br /> , 0 " ~ . . . " . . 0
<br /> " , " " , 0 ~ ., ., . ] 0 H..",ards " Ulrge Floods
<br /> 0, . - N ~ S ~ ~ . g
<br /> , < < z "
<br /> 0 '", hazards Co life ,,' e>:tent 0' <lama<;" c"used e, '0'
<br /> 3
<br /> n..., depend co. eo. topography 0' the area. floO<led, deptr. ""'
<br /> " duration " flooding, velocity M flow, rate M rise, ar.<l d~velop-
<br /> .
<br /> . p 0
<br /> , , 0 0 rnent" 0' the flOOd plains. Future floods 0' Intermediate Regional
<br /> U 0 ,
<br /> 0 0 , , . "
<br /> " 0 0 ~ , , < . . 00 Starldard Project nood magnitude "0 the purqatoire River n'
<br /> 0 0 . , " " , .
<br /> . . " 0 . . ., 0
<br /> , . , 0 . . . . " U Tributaries would inundate residential, commercial '"' industrial
<br /> 0 u 0 0 . . . -
<br /> . " . 0 < U ~ . 0 .
<br /> . . , . 0 S ~ . , dcvel"pm"nt~ " t.h.. ':'rinidad are".
<br /> . - . 0 0 0 " 0 ,
<br /> 0 , , " u , ~ 0 u .. .
<br /> .0 , , 0 0 , Velocities greater than three f,.et ", seeo~d ecmhined
<br /> ., " ., " , . , ,
<br /> . ~ 0 , . , . . . ~
<br /> " < > , " u ., , v.'ith ccpths " t;,rec feet 0, ",ere .-"t' generally considcre,; hazardous
<br /> " "
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