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<br />What happens to San Joaquin
<br />Valley Agricultural Return Flows?
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<br />I" I).nit! C. I>a\l'nport ami Hulwrt \1. Ilal.:all
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<br />T]1t' San J"i.'jllin \';illl'~ I' d"U'j{'h-ri:tI'" h~ ,oil and
<br />clilllatic IWI('ro:":I'IlI'II~ and i. ("'mplt.\ 'lIebn' ,Hid
<br />\!ftllllld \\alt'T 'Ilpply ,~'tl'lIl II hil'h indlldt., ,'\!l"Il,h.,
<br />rt'II'l' t,f <Icril'1l1tllral rdurn flo\\\, Tlll'rdoTe. to
<br />proPI'r1~ plan ",llllioll' (0' \Iater 'lIJlph ptohlt"lll' it I,
<br />important 10 IIllt!t'r,talld thai chilll'..!t" ill ,Will' COlll-
<br />pow'nl- of \tall"r "lppl~ ;.lnd 11'1' il1lp,td "theT C"Ill-
<br />llullt'Jlb of till' '~,klll. partil"uliHI~ till' Ijll'illtit~ ,mt!
<br />II'iH!" of agrkllllllr;d rdlltn f1"\\,, (lklllTn flllll j, till'
<br />portilln of \\ilhdra\\n water lhat h !l"t {"'Il,lIllII'd h~
<br />j'\;qltltran'l'iratioll IETI ;tlld rdtHI!' ill'lt';LlII" till'
<br />,tn'am OT ,.'[lIil,'r lrlllll \\Inch it l'allll" "r to ;l1lOlIwr
<br />h"d\ "f \\;It,'r,1
<br />
<br />lmpro..ed irri~atillll managemem
<br />wOllld 1101 preclllde allY 111'1'(1 tll
<br />constmct additional water projects.
<br />
<br />Thh artid,' dh(",,~,," 1Il"IIt"fidal'I"" ,,[ 'H!ri('11111Ir;1l
<br />rdurn nO\" ill till" \';I1Jt.~ ;lIld lilt" ..rf,"('h o[ rdllrn
<br />rIlI\\ It.dlll'lilllll1l1 !Ill"" Ii'." ,Illd I1Il fl,;!1 .\at,'r "ll'jll~
<br />,;!,illC:' Clarifkalioll (It lht"" poilll' \. ill t!d,'rlllill,'
<br />hl1\' lllllCh fl't!lrll \\ at..r j, trlll~ ',1\ ailahl.:' lllr fl'(',ql.
<br />111ft' ;lnd ,'\p"rl tn I1lh,'r an';". \\",' di',l\!It.,. \\ itb tilt"
<br />('ulll'1ll<;ioll 0/ II"rllt'r and hi, ('ulfl.ai!Il!" ill tilt' pf,'\iou,
<br />arlit-],'lh;lt. in till" \'all.,~. 2..12 Illillioll "n.' h-d I III ,t1 "
<br />,01 \.alt'r ar." p.,tt'llti"ll~ ,i\ail.lhlt, I.'r It'll'.. IrOlll 11ll.
<br />IN.d ;!!!ricllltnral rl'ulnl flo,.,. III ('Olltra,t. Ollr ;Irtit-k
<br />dl<l,t"(1 011 l",lillUh" ln'lll tilt' ...talt- [).'parllll<"1l1 III
<br />"'all'r H,',olln"" and 01 Fi,h ,lllt! (;i11Ilt' ']ll"\' Ih;ll ir.
<br />n'{'o\t'rab!t- in::ri"IlItIlr<11 rdurn 110", ill tit,. \'.111.,\ tolal
<br />Ilnh aholll 0,:1 lIl;d ,lilt! lhat "nl~ .1 porlioll "I lilt"
<br />11.:'1 mal nudtll". fl'dlll"l,d \\ ilbolll dil!lillalin~ "1Illt'
<br />.\ ildli/." h..t.il;lt ,md 'OllLl' llt'lldit-i;11 1",lvhillt:: Ilf "d".
<br />Thll', \\.' l'l'lw]wll' th;lt il1lp""t'd irri!!i1li,'n lIlan;IL:;'"
<br />nH'llt in III<" \'all,'\ \\ollld Ilot pn.l'1lld., ;t1I~ un,c11P
<br />l'OIl,trlll'! addili"ll,11 \"Ikr pr"i,'d' tn llWt'! LalilllflIW"
<br />1l1llHt' \\ ,Ilt-r "~lllin'IIl"llh.
<br />"'hilt, thi, artIcle fO('II'("' Illl qllalltihim: a~rkllltllral
<br />\\illt'r ,lilt! i" d,.,till;lli<>ll ill th.. \'al!t-~. il i~ ,Il~" impor,
<br />tant 10 rt't'o\.:lll/" !h;t! impr'" ill\.: on-Llflll irrk,llinll d
<br />H,i"Ill'\ \\'il111'1I;II1~ bil\";1 P,"ili\,' lillp;ld 1>11 \1,lkr
<br />'l'l,dit~- ;I!ld lli,l\ wdllt't' ,'lwr.::' 1I",d I"r irrit::iltloll.
<br />]Il>\\\'\,'r. in "lillI' ('il"" it IIW\ ha'" .' ll"i!ati,.' impad
<br />dll., t., ill'lIffkil'lll 1",H.hin...: l.r lrall'pllrt oj ';llt, "\\,1\
<br />
<br />Irom tb" afl';; F1lrlher. it i, n'(:lIi!nilt,d thai tlWfl' an'
<br />"l'l>llt'lllic alld lIl,titllti'lllal ('ull,id."fati,>I" \Ihich in.
<br />f1llt'Il(T II akr l1..t. ;Il\d lbat dlilllJ.:'" ill tlJl"'I' torn"
<br />.."u]d ('illl'" ..hall\!l" ill 'Iait'r I['l'
<br />
<br />1I"l1dil'ia] rdllfll 111111'
<br />
<br />(~hart I ".h"lllati{'all~ ,ho\\' thai .,/ till" \\al,"r "p'
<br />pli,'d 10 ('fllPI,,'d fi,'ld, Ihat p,'rclllal'" Iwlo'l lhl' r"ol
<br />IHIIl', parl p"H'oLltL., 10 ,hallll\l,alill<" 'Ialt'r lahlt.,
<br />p,'rdlt'd "II "'Ilii.p.'n iOIl' da~ la~.'r'. 11IIl mo..t !!'I{'" tll
<br />dl'l'lll'r 11"llll,. I::f"lllld \I;tlt'r (:allal ,,"'p.Il!" alld rin"f.
<br />Iwd I>"fl."latillll a]..' t"lIilrillllll' tl! l:fI>lllld \laIN. Sl1r-
<br />I,L("{' rllnoff Ir"lIl irriL:;il",d fi.,]d, i, rl"ll",d for irriJ.:;Tlioll.
<br />"lpplh-, \\al.'r I,. rip,lrian 'l'!!d,llionl\lildlil.. h"l)il,lll,
<br />,11111 alll.::lllt'llh 'twallln,,,\ i.!.,illi! I,> till' ]),,1Ia \\11<"0
<br />rdlHIl..d III tlw ri,\'r \'arioll' ,'\apol'dtinll ;lild
<br />tral"pirali"lI 1"",., ,,('("In IflIIII "c:ril'lIltllr.d and
<br />lI"ll;l!.!rit'llltllral afl'a'. \\!rkl1ltllral rdllrn nm\, In Ih,.
<br />ril,'r ,1I1!!1llt'1I1 illf1"" I" tb" I)l'ltil \ll Iwlp tlll'd 'I"l'ral
<br />Il,.[t;l r{"qllin'Ill"llb. illdlldilli.! I"llllp,.d "\I'"r! tll <lrt"iI'
<br />,olllh o( tIll' Ill'll;1. 'Ill'll ii' lilt' \'alk~. I'ra{"tic<lll~ ;.11
<br />"tllt'r ,1i.!ril'lrltllral rdllr" /111\\' an' 1ll'lldiciall~ r"It-..d
<br />\\ilhin till' ~~,lt-lIj Th.",. 11l'l\..ricial'I'.'" "f lllll'l' rl'lllrn
<br />tllI\\' lillc1l1dill'.! \';Hl;!] ,.,.'pac:\') ;jilt! lh., l:.'n,.'qllt'IW""
<br />.,1' ft..dudll!! tb"1ll ;Lft.':
<br />. \l!rj/ ',!(lIfal Il,'u,/': SlIrLll',' rll!lull' i, rt'!l1fllt'd
<br />throll\!h draill' t" lIlt' ril,'r or i- ".IIJ..d..d ill it tail";;!I'r
<br />,~,lt'lll alld "'Ih..d fur irri~<Ltillll Il,,\'p p,'rl'ol;ttioll
<br />1",10" till' l"f"P "",I FOIlt' Ihat IllO"" inlo u'ahlt,
<br />L:;rlllllld \I;tkr i, PIlIllP!''! !PT fL'll'<'. ()f 11ll' pnrti"lI Ihill
<br />lwr...,lall" \0 ,11..11.,,, J!,.,dll'd \Iat,'r lahl,." p;ul of il i,
<br />dir\'dl~ ,d""rlH'd ,,~ nop' Ihl,rt'h~ rt'dlll'in!! Itwir ir.
<br />ri!.:"tHIII r'-''1l1irt'lllt'nt. IlIlt '0111.' rniITl.:I...... wilh 'alilw
<br />\I;llt-r ;lIld i, I",t to 11I,t11L'r rt'lI".' ,\ ",dllctilln ill ir.
<br />ril.::,l!i"ll rdurlL II,)", w'Hlld afled th,,,l' f;Ullh which
<br />d"lwllt! Oil t;lilt\at,'r ,lIld "r till irril!iltillll p,'rl'olati"n to
<br />~rolllld \.;llt'r I.'r all or !l;trl ..f Ilwir irri!.:ati"lL '<'11r(','.
<br />Thi~ I,,,, llf rdUfll n",\ \1'"lld Il,..,d I" I... ,,'pl;I("'1l h~
<br />")Illl' oth.'r ~llp!lh of \\ .Ikr
<br />1"rml\)lflrt lIf "aft,: III "'lilt' ,11'\"I~ a'.!ril'u1tllr<tl rdurn
<br />i'!,,\\, Irall'pllrt I",tdlt"d "llh t,1 ,Ill ilppr"priatl' di'pll~al
<br />,it.. am! tllt'r..h~ pr"\,'nl ",II imbalalll'., ami d"l.!rada-
<br />till!)"f i!rPIITld 'Ialt'r ill tlw i1l.::riellltllf..1 ;lft.',1. In art'a..
<br />
<br />/)r R""i"rI \/ II,/",m I.' II /''-''/'''or lIIhl f~1f,'I/.I/{l11 Ilhl<"
<br />.'i/I"'llIfr'l 4/11.1 f)r /),1\'1,1 C f),/l'(/II',orll.' " Sl'l"nll//lr III
<br />fIll' /)1"1"0'1111.'111 "f 1~lIId. ~Ir ,/lid lIillo- Rno/tru'\.
<br />(ml,'/\In '~I ClIIt/llm/II, 1>,/1'/,_ 171,,\ :.:rurl:!il/h
<br /></, ('I"\I"","~" 1/1,' t:,'lIc/""lI' tllI,/ ,~/I(fi41 rrflft'"j''IIL11
<br /><I'lllr./II,,' ,,' Ill/Ie' [)'l',1/11'1j"/1f I" II,,,,,. R.'\<IIII"I"<"
<br />(l,'n"",!..! G. S,/ll""."/". R -lflil,"I. \f H''''I ,1/1.1 <; ,\"OI'II~.
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