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<br /> <br />o <br />..... <br />:..r:. <br />:::;. <br /> <br />LEC::::SATI';: nIR2crr;::S A:.:D ??'::::'?O;;S::: <br /> <br />quality-of-~ater recor=3 do r.ot. ~~ucity of ~~t~r quality records pre- <br />cludes conclusive det~~~inatio~ of t~e cissolvea-s~lijs yields c3used <br />by irri;;p.tion. T!ierefore, a.ny 0:" th~ Ceterninatio:'!:o. if:cluded in this <br />report are subject to ZU~3tcntial revision as ~ore ejequate basic data <br />~e acc~ulated and a~ 5UC~ dete~inatio~s cr~ a?91i~~ to future condi- <br />t.io~:s of rrecipi ta'tioTJ. ar:.d n:.noff. <br /> <br />Droueht conditions ~tich cause ~o~ths or y~ars of minin~ flc~ <br />greR.tl:{ reduce the dilution PCt2D':ial of an:: stream, ...-it!'l fl cc;:,sequer.t <br />increa3e in s~linity. reSardles3 of external causes. Conv~rd?ly, <br />!!:o:'lt.hs or year" of high str~ar:l fIo.." ..,ill c.ecrease t:ce saJir.it"{ of any <br />stre~!:l. Ar.y dete!':ni!atio~ of tbe e-ffec::ts cS lrri~ation on .....ite:- Q'lality, <br />to be of a conclusive nature, w:ll requir~ many ye3~s o~ "ecord ~~ich <br />include both \let a:ld dry cycles 0$ '\Jell ~s ade'1.u:it':;;I;r cocu.'!!ented stor- <br />ae:;e releases and water deliver:es to pro,lects ....ithin tt,e bas.:n. \'a!"ic- <br />tio:ls i;:: tt;e cr;:)ppine pattern, \-:ith its 3CCC'C!?Em:ri':li! y::::.r:ation in Yater <br />req'Jirc:::lent::, will produce ti :'fe:-ent sali Li ty p'l:ter::s. <br /> <br />All of tte salinity est.imat.es in this rep..rt should be j"ldged <br />merely as credible interiD ind:c3tors associated ~ith the ce;.~ral order <br />o!' maiSnitude of the result:: shoHn. <br /> <br />The cont:n'Jing rcquirement.5 of the ci.eu lerislative Jirectiv~s <br />'Jill be n.e ~.ub~:ect of ft:ture report8 wl::ich ....ill incoq.,crate addi tional <br />data a~ they b~co~e avail~tle. <br /> <br />2 <br />