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<br />~"
<br />I•,` ^,c;:i ;u the rainf:al Tnemfnrc, t}~c orcra!1
<br />rctrntion loss for rain; all on a par:ially" sne\s-
<br />cnccred \`:a:crshed during the m.eltine season
<br />\\'i11 Le less than a:a for the same «•atcrshed
<br />\`. l.'ra !let"C GI V70\':.
<br />1; sh.on:d uc i:cpt in mi::d that, a!thou~h a
<br />H°:: a! ~i'C l1e L'CC O: C'\'C:1 `. `; ::-.a\" ~ 1'OdIIeC GOeC$• it
<br />,> ; rrrr;,a:: :hr cnusu:,l c\'c::; or series o:
<br />. •., ....: 1La! ;1:'o,1::ce the ;:t'cat Con's. Tile oc-
<br />r.nrrr.cc of tt•:o hur:icar.c s:erms a fer: da.;s
<br />DESlGn OF S :'.%,a D:,u.;
<br />apart folio\ci::~; the same pat`1 over a .:.rce ar: a
<br />in the north^_as;ern Sta:es in ?,ugus; e: 1 rya
<br />is a prime ca'ar.:, !e. 1?a;:c cor.clusir..s as to
<br />Toed potent;;:1 should not be n:a'~. nn t,.^_ basis
<br />of a long perod c.C s:rca~;.°,o\•: record. Fur ex-
<br />..mPl,, a!~ho::°h ;Lc trcordad n:a~in:Jm pea}:
<br />di:C'!:.'.r{t2 Oll i!1^ Pccr)s !.: \'Cr I1C]:' t(,.^..;; OC q,
<br />Tes., v: ::; 116.000 sccmld-ice: for th,:• ; erinli ~;
<br />}'car.; 1.`100 t!:ro:r,:h !`]a~. a di<chr:r~c of 0;x•000
<br />second-fee: oc~tn'rcd or. Jt: ;~,'.;. lfi~-:.
<br />6. PROCEDU2ES
<br />•
<br />•
<br />49, lnrrodvcr;on -The selec:iar. o`. an appro-
<br />pr.::;c i:•"o\•: design flood is an essenti:a p^r; of
<br />.::^c cn,inccrin~ satdl^_s :o: .. project. The
<br />\•.s•c'; .sc:•_chor;" ;nd ': pprcpri_;e" arc used
<br />::u;..c~!\" bccanse a csr._td_.:,b!•...r:oua: e: cn-
<br />.,, _.. ]-'~mc:, n:us: b,• c>:crescd in ~ .
<br />1.± !: oio;-,lc ~;ud~" of flood potential. It mi;7; ;
<br />!._ , rc°nmoc ;h:: the ;•reb'.c.^s c; r.c:crmir.lr.o
<br />.... ...::0\': ,!cs.: ;;n I'i00U \':oc!d deers CSC la L':reCt
<br />r.aro :•~ the vzc oC :hc dralna~c area in\•olccd
<br />;, ~':: i.'l:a ?llC!1 !1:'01l!e.T.?. :OI' C~:a l::.^.~C at't"$
<br />,..:';~ >n::al d::ms scald be resolccd Gtut.•rasll}•.
<br />::~!: ,; not the ca=e. Ir. r.:an} instances, the
<br />h~ crulc;:ic pro'olcros for Sn:a!! drallla~C arCaS
<br />...c I•~ss ca<I!}' re_olced th:ln rhos` iot large
<br />.:: ca; because n•Iccant d:.ta for sma!1 natural
<br />e.:.:rrshcd< a: c esirenlely mca~er.
<br />It is bclic\ed ;ha: t:^.usc usinl- the material in
<br />ihl; t~•st meat often t•:il! Le concerned with
<br />!,-`;sets for \~:hich litl!c direct hpc!rul^gic data
<br />arc ac,:ilablc. 'fhcrcfc:~c, m; tcnal and proce-
<br />durc<-•re:cnlcd herein ha\'e been selected v:ith
<br />:: cic~\ to :,;?taunt; in ;ahaion e•f Oeec! es;im:lt-
<br />in;• Prublrm< for =uch nrejccs. Ito\cceer, :al
<br />;,c:ul::Llc recorded strenmCov: and prceiplta-
<br />tion data. sholad be ut`.!i::cd to rile ft,llest estca:
<br />pu>;i!Jr~, and ou;!mcs for mcthotls of ana!cain~
<br />thcu• data arc included in this tc>a. Discus-
<br />si••n; u` !,: c:eP..:ra dc•\'cdopmrnts haee 6ccn
<br />Omatc(I Cr C'0ndell<Cd, fi:?rt l!i>Cll?>IOP.ti Of ^.^p!1-
<br />c:,lip::, oC a:ont:aic data pro: cssin; preglams
<br />.:):1,'`1 !la\r bc:^ dcce'ol~cd fur u;ili:.ation rl
<br />Iluud c'~:im:.::•: ;:rr ^rr: i::~L•:c!"•1. Tin` rcorncc:'
<br />su :irtcresi"~I .^.. ~ ~~!~;.::I::hem fro:u rricrcnccs
<br />cited u: the hlb!.,o;:rnp'r., set:lon G0. Discus-
<br />sions of the folio:;ink subjects arc presented
<br />s. ~:.<: s,~: ~o,
<br />Es:^•aa~t; stern po:eadal SG
<br />Es:::r.a::co nu° iron rair:`a:i 51
<br />L~ni:~ra rn nr, ^c:~;es ~_
<br />
<br />L~n:'. ;; r_;:'• ~.. rn~.:;:or. `c: us~a~cd a: rn= r-0
<br />?r:an~~~iar .`. cro;,raph ar.apsa. .. 55
<br />r ~..-..a::~;: 7:C. .` coos,...: r:.1: c:1 ;;
<br />
<br />
<br />~'rrgU~nrp rc^: c• car.,'.c La ;,n95 9
<br />S0. FshmcLng Storm PotcNrol.-(.'11 :CrlCrn ~.
<br />-An c.,um;r,c of storm , ut:^.ti::! i< ::1 : i:ac^,ral
<br />part ui .i:r ::^}droulc:corn!^;•:c:.l :.;~;• :'c:,c^ :o
<br />compu:alien ui in:'.ov: d.si~ ~ ;;oo~'s. -^e ;ern;
<br />"storm potential" is all-inclu=ice, rn :,racin;:
<br />factors such ... rair.`all in:cnsi:_:, dt:ration
<br />and area! e~ter.t. tleli'Or010~15!5 arc aiac to
<br />c;tablish estim.r,es o.` mnslmum u ::ae< ter
<br />t}:csc factors v:hich, jud~cd b.: prrr~: a '~r.ov:l_
<br />ed~c, appear to be the lint`.: of r.at•.Ire' s capsi;ll-
<br />ItICS. 1hC?H m?.\; mll T1 C,,^,!l:^~ C!:I'•Cr .n:'ell;'n-
<br />ou; :hc L'nl;cd Sates (and the n~orl<l r. 3;nmr1-
<br />cdec or such l:mil<, told tL•c resaltir.~ ^n~bablc
<br />masinlum precipi;a;ion, , ro\"ides ;~~ h~'rireio-
<br />};ist \':ith a pond s;artinS porn; for .^.is c:;i-
<br />mate of a maslmum prvb::b.'c P.ood :. < \rrl! as
<br />for floods ics~ than tie maximum, probs'ule.
<br />T hC preelplLailOn CaIIJ C'S adnpind f~~:' C:1.^.?Pllt-
<br />Illf: tll^ F('!cCtcd 111(iU:`~ l!C`51~'C li~!Jd :. 1' C URhI!1}•
<br />refcrrrd ;o ::~' dc,i~n dorm. caluc.~.
<br />(1)) ,7r nl:ILb,!S.-1~Gr ;hC' pt: I'pn;n : pi t}::.
<br />te)a, thl' fl?!n;•::Il;' lC1'mli7l•106\' 1~ 1: ~~: (!
<br />(I) Yrobr.ba /rn.r:n::rr!t prCC:,: ;~!;on.-
<br />I'roo:b~c ms+:,.^:17;x1 prer~i::ainr, c:. :::rs reP-
<br />resr:; an cr,rc!npmcnt oC n:asimi~cd i ntenit>•-
<br />
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