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f!cod S:•.: d.es
<br />`or ob;sinir,~ such a record should be the
<br />: pe~sibie depending on the circumstances.
<br />tlc:aacd (!:~C:]SS:On of these facilities, ~~'hich
<br />ntn•: co:tai" of either ronrecording or record-
<br />in; ~a:-~s. ~: i-~'::ric3 in the fol!ot•:inc publica-
<br />;;,II,<: "F..; lipr. ~n; for Ccrr~'nt->:ctcr Ga;:in;;
<br />:::;in;;g." ~.~. Gcolo~tca2 Surcr~.~ l1'a to Suf,-
<br />;~h' i'::;aa' Sl: "`:rcan,-Gn~iu~ Procedure,..
<br />1.~. t~col~•_iial 5urce} \\-:.ter ~uppl~' Paper
<br />i;rS: a:•.;I ' ~.r~nm I-'love," b~ Grot'er and ]lar-
<br />rin~to::. To}:n \\'ilc}' .. boas, Inc.. \ev: Yore,
<br />1~~;3. ihr sciee of Gcolo~ica! Surcc>' en~i-
<br />rv'rr< <•::;} i;c hcipfcl in the sire sclectiott and
<br />ic=to;!::::o::, opcratiet:, ar.d ir.tcrpreslion of
<br />r, iord~ ooaincd.
<br />C;.rrcn;~':, r, serves of m: nua'.s, "Techniques
<br />rr 11'a:cr-;resource Ince>:igations o; the unit-
<br />-,. ~;:.: i;cc;u; ical S:n :e~'," is being p;:b-
<br />„~hcd. So~r:e r rag of these manuzL are pres-
<br />• nt''• n'•:,:!,•;I~k . ^rl some ~:c '„~ir.~ p:•epared:
<br />,.. pcb:!•Led chapters n-a}' be cb:aincd from
<br />:11~ ~:;:~cr;r.tcndrr.; o` Documtn;s. L•.S. Goc-
<br />,. ~.; n^.
<br />• T!n impor;zncc of u:ill=ir.s recorP.s of run-
<br />.~::_•ir..:;:::;; (ro- the c'aler.<hcd above the
<br />::,.:'.: c::nr.nt be ucrrempha<ized. In the
<br />::.:• of a darn<Ite located on ; n un_•a;:ed stream.
<br />i:~ ,~::~!IL<'t:rent cf mC,:Ai:rlr.,^, facit.itics a>
<br />r.:-rc...:d abo•.c mr: protlucc basic lots which
<br />,. ,;:i,! j:atif~ "clecen:h ilrn:r" :'ceision of the
<br />::~:~., tits, in~i~rovlr.c the uc:;i~r. of thr dsm.
<br />40. Precipi:a:lon Vero-Ir, oac•h of the siha-
<br />;:oa. o;t; 'ncd In the prcccdinp section, prccipi-
<br />,..:iun cast:: arc ucv,icd to c~~alua;c factors for
<br />'.I~c In cc:r,pc:ir.° the m: ximum pro'u;,blc ;loud.
<br />•1'l•• ~•t:;:nttrr <houlri asxcn~blc the iniorm::uon
<br />v: ;;h :'ts;,pit to pacipl;aLOn durtn;: the grca:-
<br />•~r .terms i:r the rc~iur., s:u! h:n'ticularl;: fer
<br />tl:,•„~ <tornt, fur ~': high runolT records arc av::il-
<br />:,i,:~. }:w h n:furmatiun can he obt;:incd from
<br />,.:t'.~' ~:~ti~u~, ~f ti;~• \s;lncal \Cca:hcr Jcnicc
<br />o-.t'd I:n':irunm~•ntsl Psu, Scrricc. At present
<br />~.,
<br />' . • . ! ~. ~... ',; tn'~'c:;::t::tiny. c::a for each
<br />.,th for rarh ~::::~• an• r~,•aat::cd in the Inlb-
<br />~,;It~~~::. "r'lic::,t„i, ac::! hats." lintn'!~ data
<br />:~, n :::r~.:it f,~,. v^ch ~;stc• oh:air.cd hr r_-
<br />,"'r~~'il;' }~rcl l;l:t:It;n^ j:airs :Ire CO n;alnCll 171
<br />
<br />39
<br />the publication, "Hourly, Precipitation Data."''
<br />Often precipitation data obtained b}- the Xa-
<br />tior,al ~`••eathcr ~ercice precipitation stations
<br />'race been sup; lemenied b.: "bucket sune~'"
<br />d :: :, Le, :nfc'n:a:ion on rainfa:! amccnts of
<br />uncsual s;orn:< e:,;alned from residents ~,'ithin
<br />t'r,e storm area tr; pcrsomul of the XaUOns!
<br />\I'ca:her Venice and other Go~crnmr::;
<br />a~cncics.
<br />Locations of precipitation station= : s of 1fIGl
<br />are sho~cn on the series of maps, "F.icer Ea~in
<br />?lap= sho•.cint N>drolo~ic Stations," pre~-ica~•
<br />k refcrrc•d to. Te need ma>' arise for a:iCx-
<br />ing ireauer,c.: values of rainfall (sec. ;~).
<br />Xa:im;al 1'.'ca!her Se^:Ice p'.tblica;:o;,s pre-
<br />senting these, data are included in the bibliot-
<br />rap`,~;, section Grp.
<br />If pl.^.n~ a.e :-:ace to ins!all strc;.m^o~" nea=-
<br />uring facitities zs discussed in the precc;?ir.,^
<br />section., pro':a:on should also be made for o'o-
<br />tatn:r,~ precip:;s;ion records. ?.n .n;porar.t
<br />item to consider is t%:c selection o.` :hc• lnca:ire
<br />(or locations) o;- the prccipi;atior. >•a^~, so that
<br />the catch v: ill be a representzti~:c sa:-:pie of
<br />at'era~e prec;p:;auor. ot'er :hc n'ater~?:c:!.
<br />,~rnprehcr.sice dacussioa o` t}•pes o: preclp!-
<br />tation gaffes and observations) p:orer;ure. i~
<br />contained in the ~..^.uonal «-ea:her Fervice
<br />publlcs:ior., "Instructions fw' Cli.^.,a:o'.o~ic::~
<br />Observer;," Cn'cular P,. 17th edition, Ja::u.^.r)'
<br />L GI.
<br />41. Use of Streamflow and Precipitation Records.
<br />-From a flood h>'drole~is;'s point of ':icu', sn
<br />objccticc of aaai.:=ir.g s:rcamPon' and p;rcipi-
<br />ta;ior. recor<'.s is the deveiopntent of procedur,•-
<br />whcreb>' the },~dro;:raph t:imc t•cr.,u• d:s;ribu-
<br />tion of runo.'`) t!:a( v:ill rrsult from ~F:rn
<br />amount of rain`s)) mnp be cs::mstcd. ,lnoth-
<br />cr objccticc is the compu;.n.;ion of a flood
<br />ms~niuldafrc quc::cp reiatiot:shir bayed on es-
<br />pcricnccd e\'CnlS. Cc:'tal^ procedure=. which
<br />hs~c been deccloprd fur a:;sit:ink the<e ob-
<br />jectives pace been selected fur presentation in
<br />t6:~ test : < applicsb!e to proi,icnts t•t:cu:;:r.ered
<br />in the dcsi~:: of s.^:nll dates. I:I:_incor< ;n;, r-
<br />ested In ,. .`u'! dl<casston of the sub~cc; src
<br />referred to ;: ~ tots included in ;hc b:uliu;r-
<br />raph~, ,ccttu:: Gu.
<br />r Subs .^L., ~ inr.r pol J•. n, u.n. mn be n,ne•~ ron.•mn gyn. tim....
<br />~•arm~• m .., 1!~.um. m.. C S. Gu•vrn mra I'n n,mc uC,., ... b•n,
<br />b.,,. ~.C auto]
<br />
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