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<br />.. ~ -The :~:itS ':"n~cn f:.::o... fOrll1 a Kl!y'to Figure 2.1, t'ie B..si", !":,:'del Net....;:.rw.
<br />, ~1Ee -'4ocel net...Or'.k 1S compr15e~ of ,':':'+6 rlOdes ....0 571 .wes. As.':l scus~e:: ,1:'" :.ec-
<br />~ ~ , tlon 2.3.1 ':If tr.l!tTdSk I"lerllorandum,'''.arcs -are~he,'crltlc",l fea<;lJJ'es -:,.:;:r,e_-
<br />...ti~I,JitT,et,,"orl-,; r,cces '3.r"e sirliply.liJofntsiwl1lE!r'e ar~s"'are"'c"fmec~~c:'-~ ~. ....1 ~
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<br />-3 Fesides tne ".ode ~I",ufllbel"'s to wnich the .a.rc lS c-:>r.nected {t:-.e "ft'.:"," a-r,d 'to'
<br />. nodes), each af"C has three parclmet~r'J of'fundament~l :111ccrta'nce. Tne::e c",r.:l("e-
<br />ters are tne ,lower bound,~'-tne .:.upper I)Ound.'c'";lInd tne ....ank-. oThlE' le.wer oound 'Sets
<br />..n~tne -minU'tIt,lm flow .dllo...ed -in "tne arc-.,u',d the '1Jpper bou-r'd seto; tr.e !11c..o,ll,1UM fl.:....
<br />allo...ed 11'1 the ~rc. The rank descr:bes .'tne ....aL..le placec c.r. i'l U:",lt e.f fh:."" HI
<br />the;arc; tne Model allocates'~at~r preferlE'r~lal1y to arcs navl~g hlg~er ran~s l~
<br />It'S eff.,rt t..;. .:.ptlf41:e thlE' water al!ocatlOr'l ,.f the er,tlre r,et"",::.r~.
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<br />.. II' Fou,"iilfferent' -types'lofl arcs atoe used -In :he baSlr, M-:.del r.eo;""c.r-;,.... l:,.f~.:,...
<br />'.:: ....arcs, ceMar.d .arcs, '::ecree arcs, c!lr.d : :1",1(5. Qll fe.ur" types of arcs navt;> tne tur,-
<br />....:o::;""'.~' ~at.lent...l para.iI\etersAe.scribed abo...e. .-.:".The~i fferer,ces cpt...eer, the fou~r tyces of
<br />:arcs relate;'p'r";;.imarily"to cor....er.ience.....-of~ CRQM input-and -output. Fc:'r 2xar,'p!e. it
<br />is .:.r,lY;':':I";Ecessary ':;0 ~,.;o....-ide1.'the ..to"~1'\<:'de'''Qrod''1JpperbOu1''lc c:.f lr,fl.;.;;! 'arcs ir. the
<br />~'i ,-;d~.1 !!?pu.~ ;.::.'the.c~!r_':!ll:_~node, _),--owe,,:;;boor,d,;,.,a-I"ld" !,aflk are -irli t ul i :ed il',terr,.illy_
<br />. 01,:. ";,by,,ithei1l0del-:)';)LiTlksr":On~'the;~1the:hand:4,:"e~Ui~e f~l1. sp_eci:icd~lon ::d all'~fun-
<br />~, , ,:~~rlI~!'1t.al par~Meters"?!:f'<:i",r-:HQ. ~L';?",'J.-.3:,_~' ~_4~. ~~ ~. -;;,- :." -
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<br />,,~; ....~~..:::"{]f.::t.h'lE'-:571:--arc5;.:-. 791:arcs.-) represent....inflciws..or. ,...e:t.urTI~Jflows 1 t nes@ arcs! are
<br />Slabeled "INFL" on Figure 2.1. Inflo", arcs force water"cintc.' the rlet""ork becau5e
<br />~~~their_Iower bound i5-"setr~eq-iJalttoo"'theiroupper bound WhlCh, oirtturr" is equd to
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<br />_ "",--:'.,a _p,articular monthly infJow.iYoluDle." 'Ther-e are'no ranks set for inflow .arcs.
<br />'~.,;j-'ii:r ,,z' -;. .~" _.;.>:"';: 'U.i~ .;;.~_ .....~ z.. ~ ':. ':.
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<br />"I, Oem,and arcs, of which-:.there are- 2e.2"in- the network,- withdraw water from the
<br />~.~network. These .arcs are~l.b.l.d~~DEMN- on Figure 2. 1. It is n~ce5s,ary to
<br />~ specify the -from- ncde,.the.upper bound,.and the rank of each demand arc.
<br />_~Generally~.p.aking,~th~ upper'bound r.flects~the ~onthly ~eM~nd volume and the
<br />~ r,ank reflects (except 1n . ~e"'cas.s) the water rlghts prlor1ty of tne demand.
<br />~_;~ Thm ar. only 3 d..,.... ~rc. :~-;~~ ;:::':r~: T~'.'. are la.el.d "DECR".
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<br />~, :iCR~ .uto.atically k..ps track~of'accuMul.ted flow~ in decree:,arcs, II. feature
<br />~~~__ which is used to track reservoir-stor,age over the course of . year. Decree arcs
<br />'~~~i requil"'8 full s~ci tication of all ~ funct,a.ental arc p,araltleters. The upper bound
<br />~, on a decr.. arc repr~.nts the total accumulated flow whiCh is permitted and the-
<br />i!. rank represents the,priorltY"plal:'ed on that flOw.
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<br />~"'t Links are the most ...ersatile type of arc in the network. There are 227 of
<br />-- .~-- them, l,abeled "LINK" on Figure 2. I, In the b,asln model netNork. Llnks l:'an be
<br />~~ used in plal:'e of all other arc types except decr~e arcs. Ql1 fundamental param-
<br />~ eters of t inks must be pro....ided as model input.
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<br />~ ~~~ ~~~.The following lists describe the essential characteristics of the inflows,
<br />J~~';,,",demandti, decrees, .and .11nks shown on Figure 2.1.
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