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<br />Gardner and Young.;:_\;.."
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<br />In contra~t, tHrCrand Valley, Lower
<br />Gunni~on, Uinta Ba~in, and McElmo
<br />Creek unit~ are all canal and lateral lining
<br />project~ that do not pa$ the benefit-co~t
<br />te~t. Thc LaV erkin Spring~ unit has ~uch
<br />a low return that it i~ no longer under
<br />official con~ideration.
<br />In general, the benefit-co~t ratio~ for SCS
<br />on-farm ~alinity control programs are
<br />.higher than the ratio~ for the more ~truc-
<br />.. tural project~. Thi~ conclusion i~ rein-
<br />forced by the fact that SCS project co~t~
<br />probably are over~tatedbecause of the
<br />omi$ion of labor ~aving~ benefit~.
<br />
<br />Concl~sion
<br />
<br />From an economic efficiency ~tand-
<br />point, only five of the twenty project~ ana-
<br />lyzed above warrantcon~ideration for
<br />con~truction. Abandoning the remaining
<br />project~ would avoid irrever~ible commit-
<br />ment~ of furid~ to nonproductive ~ocial in-
<br />. ve~tment~ at a time when federal budget
<br />. deficits are critically high. .
<br />The con~truction. of the~e five unit~, if
<br />current projection~ of thei.r effectivene~~
<br />are borne out, would eventually lower ~alt
<br />di~charge$ by about 400 thousand ton~per
<br />. year. Lower Basin ~alinilY could be ex-
<br />pecled.to faU byabout4Q mg/liter. Thi~..
<br />decrement in ~alinity will provide a no-
<br />ticeable benefit to downstream'user~ or
<br />could off~et the effect~ of up~tream de-
<br />v.elopment. Given the recently lower ~a-
<br />linity level~ of 816 mg/liter in Hi81 at
<br />Imperial Dam and 7S2 mg/liter in. 1985
<br />and the eventual completion of the de-
<br />~alting plant, plu~ this amount of ~alinity
<br />control. the United State~ ~hould hav.e no
<br />problem meeting it~ obligation~ to Mexico
<br />(ba~ed on 879 mg/liter) in the fore~eeable
<br />future.
<br />
<br />References
<br />
<br />Anderson, J. C.- and A. P. -Kleinman (eds.). Salinity
<br />Management ,Options for ihe Colorado River. He-
<br />
<br />,<~~::'1i
<br />..
<br />
<br />Salinity Control EvaluatiOn
<br />
<br />port -P078-003. Utah Water Reseaicli Laboratories.
<br />. Utah State University, Logan, 1978.
<br />
<br />BoSler, M. A. and W; E. Marlin. "Mullisource/Mul-
<br />.-' tiquality Agricultural Water V5e Decision-Mak.
<br />tng:" Watn Resources Bulletin, 15/1{-l978): 206-
<br />19.
<br />
<br />d~Arge. R. i... and L. Eubanks. "Municipal.and In-
<br />dustrial Consequences. of Salini.tY in the-Colorado
<br />River Service Area." In Salinity Management Op-
<br />tions for the Colorack? R~ver.J. C. AndC1rson and
<br />A. P. Kleinman (ods.). RepOrt P-7B-()()3, Utah Waler
<br />Research LabOratorieS, Utah State University, L0-
<br />gan, 1978. . .
<br />
<br />Gardner, RicluUd: L. "Economies cif Cost Sharing of
<br />Salirtity-Control in the Colorado Rivet Basin." Un-
<br />published. Ph.D. Dissertation, CoJorad9 State Uni-
<br />versity, -Fo'rt Collins, i983.
<br />
<br />Gardner, -:Richard _L. and Robert A.: Young. "Tbe
<br />Effect of <;::ost Sharing - Mechanisms on EfficiEmcy
<br />and Equity: Salinity Control in the Grand Valley,
<br />Colorado. ,. American Water Resources,~iation
<br />Annual Conferenc.e, Washi~gto~, _ D.C.. August
<br />1984. .
<br />
<br />Imperial. CQunty Cooperative Extension Service,
<br />University ~f Ca1ifotriia. oC;uuJeltnes to Production
<br />Costs and Practices, 1982-88, Imperial County
<br />Crops. .Circular 104,- EI_Centro, California, May
<br />1982. .
<br />
<br />Kleinman, Alan P. and F. Bruce-Brown. "Economic
<br />Damages in Agriculture EroIll Salinity in the Low-
<br />er Colorad!> Basin." In Sal1n,tty Mafl4g~ment Op.
<br />tlQns fO't. the Colorado Rioer,. 1. C,. AnderSon and
<br />A. P. Kleinman (eds.),pp. 1'i'7~252. Report P-7S,.
<br />003, tJtaboWater Research Labor~tories, Utah State
<br />University, Logan, 1978.
<br />
<br />James'-L. D'o~d _R. R. Lee. Economics of Water'
<br />Resource.P!ann~ng. MCG~a~-HiU._New York, 1971.
<br />
<br />McKean; R. N. Efficiency_ tn GoVernment Through
<br />. System8 Ana/y.i.. John Wiley, New York, 1958. .
<br />
<br />Moore, C. V., J. H, Snyder, and P. Sun. "Effects of
<br />Colorado River_Water QualitY,anq_Supply on Ir-
<br />rigated _ Agriculture! " Water Resources Research,
<br />10/2(1974): 137-44.
<br />
<br />Oyarzabal, F. and R. ~. Young. "International Ex:-
<br />. temal Diseconomies-: The Colorado River Salinity
<br />Problem - in,' Mexico'-" 0 Nat<<Yill _ResoUrces Journal, '
<br />18/1(1978):17-88. .
<br />
<br />Paulson, L. J. and J. R. Baker. "Effects of1mpound,
<br />
<br />11
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