|
<br />
<br />
<br />This status r~POtt WdS prepared bl' Bureau 01
<br />Reclamalion Sldll personnel as the blennl"[ program
<br />apprcllsal rl'ferred to In Ihe Ft'bruary 1972 repOrt of
<br />the Bureau of Rl.'cJ"matlon entrTred "COlOrado River
<br />Water Quality Improvement Progrdm" (CRWOIPI.
<br />ThaI repO,! fOrmed tht' bdsis for unanimous
<br />recommenc1<lllons developed by Federal ilnd Stale
<br />conferees ill Ille Sevenlh Sessron Of the El1vllonmental
<br />PrOICClioll A9('ncy's 1972 cOnference on "Matters
<br />Reldtlng to lilt' POilu lion of Ihe Interstate Wilters of
<br />the CoJorado River and Its Trroularles." The
<br />Recramation 'ePoIl Slated that "Appraisal and prOSram
<br />progress ilnd dl/eCTlon will tll" made al mtervals of 2
<br />vears," Tht: faCTors 10 bt, COnSrdered inclUde' (1) kmds
<br />Of phvslcal COntroJ WOrks f1ef'ded, (2) economic
<br />I'valuatlon of pOsslbll' COntrol WOrks, (3) publiC
<br />aCCt>Ptano.' ilfld commllmera 10 COnt/ol, /41 potential
<br />ImPacls of eVOlVing technOlogy, and 151 relationships
<br />Wlthm lhl' basln....ide managemenl plan, Moreover, Ille
<br />recommendations of tile COnference PrOVldt'd IIl"t the
<br />Bureau of RCCJdmilflon leport On generill program
<br />progless armuaUy 10 the COnltnt'('s arId other mteresTed
<br />Slale agencies.
<br />
<br />w
<br />o
<br />......
<br />1".)
<br />
<br />The reSUlts displayed m Ihls Stdtus 'epOll ale based on
<br />mVt'sll9dllons and rese"lcn conducled during Ihl' Past 2
<br />years, Although Ihese sludles are J3r9('/y roOtl'd in PfJor
<br />efforrs 01 Ihl' EnVironmental PIOteCtlon Agency, the
<br />COlorado Riv", Board Of Cllilorni<l, rhl' U.S.
<br />GeOlogical Sllfve\" and the Burt'au of Recldmdtion,
<br />Ihey do not <IS yet unfold a comprehenSive baSlf'lwlde
<br />COntrol pl,ln.
<br />
<br />TheS(' priOr studies and Ihl! recommendaTtons of Ihe
<br />COnference were used to slfuCIUte Ihe Pfogrdm,
<br />COIlSl!{lUl'nIJy, emphaSIS was plaCt'd 011 detcrmmlllg the
<br />effeCIS 0/ salmit\' levels and 011 melhOds of canuolhng
<br />S<llmlty from "ligaTion, Poinl, <lnd dlfluSt! SOurces. As
<br />Iht: Sludles progressed, II became eVident Ihal wllhin
<br />th.s afta\" prnTlt' COnSlderalrons should 0(1 grH'n to
<br />nonsrructural or minimal land treatment apprOdCh(1s.
<br />Beginnmg In FY 1974. mcrcdsed emPhasis was plaa-d
<br />UOOn such mCdSures <IS Impr-OYtflg irngatlon effiCienCIes,
<br />Im/ll"ovmg management of Ihl' "vel and Wdler
<br />COnvey.:mct' SYSlems, Utllizlrlg sallnl' flows, man3glng
<br />Federil/ liIt1ds lor S<llmity COntrol, reformUlaltflg Ihe
<br />plans lor WaTer reSOurce de~t.'lopmenls 10 m'lllm,ze salt
<br />loading, e~arn'nmg salt preciPllatlon Phenomen<l m
<br />large reserYOIrS, and reducmg evaOOtranSPlrallon
<br />Ihrough Ireatmeorll and m<lnagement of ~egtolallon.
<br />Some of Ihe measures, Such as imP/Olring 1"'g<lIIOn
<br />efficiencies, <lre being conducted direCtly .....,thin the
<br />CRWOIP, ....Ilde Others. Such <IS the research 00 salt
<br />preClpiloltlon Phenomena In reservoirs and the
<br />
<br />PREFACE
<br />
<br />util'lation 01 sa/int' flows, are ~ing ImplemenTed by
<br />Stalt.' or PflVate enlllles, Olher lechniQues reqUiring
<br />more detailed studies InclUde salt remOval al POints of
<br />(JlverSlOn to use, and sudl long.range Concerns as
<br />dilution thrOugh augmenlallOn by .'\tealher
<br />mOdl/icatlon, dt'salting sea waler, and develOPing
<br />St'Olhermal resources.
<br />
<br />SaJmlty COntrol '5 vlewt'd In these investIgations as a
<br />re/aled faa-I of an ('vOlvlfIg COmprehenSive plan fo,
<br />managrng Ihe Water r('sourct's 01 Tht, COlorado Aive,
<br />BaSin, No Smgle measure Ciln achlew: rht' goals
<br />estdb/I$hed by Ihe 1972 Enforcement Conference and
<br />the St>ven basm Stales of ". . . mamlallllflg Sdlinlly al
<br />01 belo..... present levels m Ihe 10~\ie/ main stem." The
<br />CRWOIP hilS been e~alUdllng al1d will Conllflue 10
<br />evaludle allcTl13f1v(' .....dyS to mt'el Iht' salmiry Droblt'm.
<br />WIlt.ther 01 not S~clf,C SOlUTionS can be recommended
<br />depends, In parr, On the reSUlTs 0/ the economiC,
<br />mStllUtlonill, and legal Sl\ldll:S Moreover, Ihere Il.as
<br />[)I'flll no commitmenl by the FecJer.al Governmenl 10
<br />any SPeCIfiC SOlUllons Ihat may Ilt' 'denldied during fhE'
<br />evaIU,Hlons.
<br />
<br />S~linlty conllot, PJf/ICulilrly as apphed to 3 lar9'_' rIVer
<br />bilSln, is il fJOvl'l undt>rtakmg, Manv phYSical, SOCIal,
<br />eCOnomic, and Jegal COfrlple)OllE'S are InvolVed.
<br />
<br />In the PhysiCd/ iJrea. the relative prOPortion ot SarmHy
<br />illlflbuTdOl(' fo v""ous SOuro:s Such as naTural Springs.
<br />n<l Iu r al SofuI.. erosloo, Irrlgilllon. evaPo'alrofl,
<br />Out'Ol'basln eXPDrr, and munlCipill and if1duS(rjal uses
<br />hdlrl' IJo/>en Idl'nrlfled 01'111' If1 a Ptt"lmlnary mal1f1er. For
<br />ell ample, ilJ/ ""gaTlon P'owcls ..lfe aSSUmed to
<br />P.1ltlCIPdle 111 Sd/I loading till" rl~er SYS1~'m. Recent
<br />StUdies, howt'~CI, SuggeSt thaI Ir''903lloo unrkr some
<br />COnd'!ICns may ilCluo3lly remove salts Irom rhe system,
<br />Also, vo3nous PDllions of the basrn a'e remO!!;'
<br />D'Ha.garhermg m rhl's!;' dredS has been d'ffieult dIld lhe
<br />hlslonc data bJSt! hilS flOt alWdyS be(!1l adequate 10
<br />prOVide reliable assessments of thl' Impact of var,ous
<br />'''aTer Us.es. The program IS lherefore develOPing a
<br />rellabledal<l base
<br />
<br />Comple~ SOCial Queu10ns aflst' With reSDt.'CT 10 value
<br />JUdgments Ifl~Olv'ng salInity goals, en~lronmentaJ
<br />impacts of S.:ilinllY COl1trol, aC:COuntlfJg for the Woller
<br />losses Ihat ....Ould tll" dllflbutdble to salll'lll\' COntrOl,
<br />and COsI Sharing. Thl' lalter rs partio..I3r/y ImpOrtilnl
<br />sma- mOst of the efJlltles tJt'rng IfrlpaClt'd by Ihe IIsin;
<br />Sdlrn,ty Je"'els arl.' 10C<lted U'I Or dIvert from Ihe fower
<br />OOrr1ons of The baSin, whde most ot Ihe salmlty
<br />DrlgHlales in the uPDer pOrtiOns of lhe baslfJ,
<br />
<br />
<br />
|