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<br /> " .
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<br /> . . . . " . M 0 " M . _ .
<br /> _ . M . . M " M . M M
<br /> M . N M " N . Standard Proiectf'lood
<br /> . " .
<br /> ~ " " . instances has a sp"cific stream experienced
<br /> " , Only in rare
<br /> 8 " ,~
<br /> " . . ", largest that is potentially possible. Severe as the maxi-
<br /> I ~ . . flood
<br /> .
<br /> ~ N known flood may have been on any given it is generally
<br /> , " .~ stre"..,
<br /> U " . . accepted that a larger flood will occu,. lit time i. futllre.
<br /> ~ . E SOl"''' ",
<br /> o-
<br /> S , " 0 0 0 0 0 0 , 0 0 0 .
<br /> 8 , 0 0 0 0 0 0 0 0 g 0 The Standard Project Flood is defined as the flood that ". be ex-
<br /> ~ 0 0 0 " 0 0 00 0 " "
<br /> ~" . . pected from the most combination of meteorological and hydro-
<br /> " M . N . 0 M N 0 N 0 . severe
<br /> . 0 0 . M M M N N " " ~
<br /> - N logical conditions that"re characteristicso!
<br /> ~ " considered reasonable
<br /> . the geographical area in which the basin ,"'
<br /> , . drainage is lo"ated.
<br /> 0 0 0 0 .
<br /> N " M 0 " . " N 0 N 0
<br /> ~ N N 0 N M N . . N . " Corps of Engineers, in cooperation with the NOAA Weather Service, ""
<br /> . . N . . 0 M . . " ,
<br /> ~I " - " " M " "
<br /> . , made comprehensive studies and in~"stigations based on ~ast records
<br /> " . N , . ,
<br /> " M . " " 0 _ , . M N ,~
<br /> M " " of e~perienced storms and floods and ,.. evol~ed generaliz~ proce-
<br /> . . . . . . > a
<br /> . . , . . > . . > , M Floodcharac-
<br /> . . . . . . ~ , . < . dur"" for estimating the flood potential ., water.."ys.
<br /> . . . . . . .
<br />N " . t"ristics \lIa~i",urn condi-
<br /> ~ 0< ", Standard Project Flood "0 a~eraged
<br />" >
<br />" - " tionswithin
<br />~ ~ ~ . . ", study reach are ."'~ in Table "
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<br />" M
<br /> ,~ . . . .
<br /> . . - ~ ~ .
<br /> 0 . 0 N W . 0 ~ ~ N " N .
<br /> 0 . 0 0 N " 0 N 0 0 N 00 . Freq\1cncy
<br /> " < . w . . " N . . .
<br /> " , . - . .
<br /> ~ . . N " !lydefinition, t~e Intc~.edintc Regional Flooe has an
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<br /> . inlOOyeau. is itrlpractical
<br /> 0 o. a~erage occurrenCe of Once Howe~er, H
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<br /> . . to assign a freqllen"y O. ~h~ gr.."t.... Standard Project Flocd. "",r
<br /> n e'
<br /> 0 ~ 0 0 0 . . , 0 , 0 ,...,
<br /> ~ . M N " " M " M " M . purposes of hazard evaluation, it is important to recognize
<br /> 0 0 0 0 ~ 0 0 0 0 0 0 .
<br /> < . . . . . . . . . 0 either of these major floods can occur in any
<br /> ~ < . Z Z . , . , < Z y".H. Floods larger
<br /> " . . . . .
<br /> 0 .
<br /> ~ . . than the Standard ?roject Flood are pOssible, but the combination "
<br /> " 0
<br /> . "
<br /> ,~ " fact",r.'; necessary to produce $uchlargeflows would rarely occur.
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<br /> i , . . . , Hazards of LIl.rqe flOOds
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<br /> " . . " N " " . " "", hazards to life and extent of damage caused by any
<br /> . . . . . . . . . . . .
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<br /> . . . u 0 . ,~ . ,~ flood depend On the topography of the flooded area, depth and duration
<br /> , u " u u u u . , .
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<br /> . 2 . 0 , Q , . of flooding, velocity of flo"., rate of rise, a"'Jln...".......a.. developments
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