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<br />lJ1.~.~ <br /> <br />10,000 <br />9,000 <br />8,000 <br />7,000 <br />6,000 <br /> <br />5, 000 <br /> <br />RETURN PERIOD (years) <br />2 5 <br /> <br />25 50 100 <br /> <br />10 <br /> <br />o <br /> <br />o <br /> <br />Peak water diacharQe <br />Volume 0' debris <br /> <br />El----Q <br /> <br />4,000 <br /> <br />----.... <br /> <br />Peak water and debris discharge <br /> <br />3,000 <br /> <br />/ <br />/ <br />/ // <br />// <br /> <br />/ /// <br /> <br />/ /// <br />/ <br />/ d'/ <br />/ ~/ <br />/ /// <br />/ /// <br />/ s' <br />// <br /> <br />/ / <br />// <br />/ <br />/ /// <br /> <br />/ //// <br />/ <br />/ <br /> <br />2,000 <br /> <br />~ <br />'" <br />- <br />~' <br /> <br /> <br />w <br />~ 1,000 <br /><( 900 <br />:.: 800 <br />u <br />en 70P <br />i5 600 <br /> <br />500 <br /> <br />400 <br /> <br />00 <br />r'J <br />..-(1') <br />o <br /><<=> <br /><<=> <br /> <br />300 <br /> <br />200 <br /> <br />iOO <br />99.99 <br /> <br /> <br />99.9 <br /> <br />99 98 <br /> <br />95 <br /> <br />< <br />; <br /> <br />90 80 70 60 50 40 30 20 10 5 <br /> <br />PROBABILITY OF EXCEEDANCE (percent) <br /> <br />2 <br /> <br />.5 .2.1 .05 <br /> <br />-.,.... ..'. <br />~~1rlr~::':I'(l!;'..; <br />'.:.L~~~: :>.... <br /> <br />t '.' <br /> <br />.i <br /> <br /> <br />100 <br />90 <br />80 <br />70 <br />60 <br />50 <br />40 <br /> , <br /> ;, <br /> ): <br />30 ,}: <br /> . <br /> ~ .. <br /> - . ~ ' <br />20 .. <br />.. .., <br /> - f <br /> , <br /> .. <br /> ~ <br /> u . <br /> 0 r: <br /> w <br />10 :::;: <br />9 => ... r <br />~ <br />8 0 ... <br />7 > <br /> en <br />6 a:: <br /> lD ,1 <br />5 W <br /> 0 <br />4 ., <br /> !. <br />3 ! <br /> " <br />2 <br /> <br />" <br />;.; <br />., <br /> <br />.i' <br /> <br />.01 <br /> <br />!' <br /> <br />" <br />" <br /> <br />.' <br />,. <br /> <br /> ,,-,,,,'. (' ~ . . , '" ., . ,,: ..~ ;;,.~.;...;,. ..,;.,.-.....,,~.....~ <br /> PLlf 1 . .. ,. J I" t T <br /> " '\J ,. " .. " 0 .' ., " ~ .. ~ ~ n '" " tr ... n .. .. ... U> ~ ~ 0.: "' <br />~ < " po .. 0 po <br />.. ~ ,. .. 0 " " " .. " '" " .. .. u .. .. .. 0 ". " '" "' U> 0 <br /> '" 0 ~ " '" .. Ii to to to to " to 0 "0 '" tr ~, " " :. .., po ..' n ... ~ ~ <br />(T <br />c ? .. ~. e- " " " n ~ n ~ <br />~. '" n " <br /> <br />-""( <br />