|
<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".bi~atio".sn
<br /> "
<br /> 0 that " considered characteristic 0' the geographic"l region " w1'-.ich
<br /> .
<br /> ,
<br /> 0 . 0 0 0 0 0 0 0 g 0 0 ", drainage basir. h located. ", Standard proje<;:t 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) 00' almost twice
<br /> . . . . . . " .
<br /> . . ~ " ~ w ~ N - .
<br /> ! . . w . . . h, peak discharge " the devastating flood 0' :-lay 1955.
<br /> " " . . . ~ ~ . ~
<br /> . - . . .
<br /> . > g " . . . " . Flood characteristics " h, Standard Project Flood ".
<br /> S ~I 0 - > " . " ~
<br /> , , ~ , , , e l averaged maximum conditions within eo, study shown " Table
<br /> 15 0 0 0 < < 0 " area m
<br /> U
<br /> , N N 0 . " 0 . N N
<br /> " N N , N - M N ;,
<br /> 0 0
<br /> ~ ~ 0 .
<br /> 0 , Frequency 0< Floods
<br /> ~ N " -
<br /> , " "
<br /> u - B , , '" Intermediate Regional "oW b defined having
<br /> 0 " 0 .. "
<br />. N " " . .
<br /> 0 . 0 . " frequency of 0' " "" deaignatcd
<br /> " . " , , 0 0 " 0 w w 0 N M ave>,age occurnmce once yea>,s n .
<br />~ 0 0 0 , , , . " , . 0 . . 0 " N
<br />S .3 . . 0 " - - . " . .
<br />0 5 0 < . location. " " i."'practic",l " 1I$$ign . frequency " tlce greater
<br />~ N
<br />" N Standard Project Flood. Floods larger H.a, the Standard Project
<br /> 0
<br /> ~ ~ "oW possible, M the combination 0< factors C,
<br /> m necessary pro-
<br /> " 0
<br /> , ducc stich lar<.;e flows would rarely ,,' " hazard
<br /> " OCcur. purpOses
<br /> ! " evaluation. H " recognize that either " these floods
<br /> , N " important "
<br /> - .
<br /> x 0 0 , successive
<br /> ~ I . . , 0 0 '00 occur " '" year '00 possibly " years.
<br /> - - , 0 , 0 0
<br /> , - - . " ~ " , . -
<br /> . , , ~ , . 0 0 . , 0
<br /> " , " " , 0 ~ " " . ] , H..",ards " Ulrge Floods
<br /> 0, , - N ~ S ~ ~ . g
<br /> , < < z "
<br /> , '", hazards " life ,,' e>:tcnt 0' darnaqe caused e, '"
<br /> 3
<br /> noW depend oc, ", topography 0' the area floO<led. deptr. ..,
<br /> " duration " flooding, velocity 0< flow, rate " rise, ar.<:'! d~velop-
<br /> .
<br /> , p ,
<br /> , , , , ments " the flOOd plains. Future floods 0' Intermediate Regional
<br /> U . ,
<br /> " , , , . "
<br /> " 0 . ~ 0 , < . , ,. Sta"dard Froject nood magnitude 00 the purqatoire River '"'
<br /> 0 0 , , " " , .
<br /> . . " 0 . . " "
<br /> , . , . . . . . " U Tributaries would inundate residential, commercial '"' industrial
<br /> 0 u 0 . . . . -
<br /> , , . , < U ~ . 0 ,
<br /> , . , , 0 S ~ , , dcvel"pm"nt~ " t.he ':'rinidad area.
<br /> . - . 0 " 0 " 0 .
<br /> 0 , " " , , ~ , U .. ,
<br /> '0 0 , 0 .. , Velociti"s greater than three f,>et ". seeo"" ccmhined
<br /> " , '. 0 , . . 0
<br /> . ~ . , , . , . , ~
<br /> " < > , " " ., , v.'ith eepths " t;,ree feet " ",er" .-,re generally considere,; hazardous
<br /> " "
<br />
|