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1、MarketExchangeImpactonWaterSupplyPlanningwithWaterQuality123MesseleZ.Ejeta,P.E.,M.ASCE;J.ThomasMcGuckin;andLarryW.Mays,P.E.,F.ASCEAbstract:Amarket-basedwatersupplyproblemismodeledasanoptimizationproblemmaximizingnetbene®tfromwaterusesuchthatalltheconcernedpartiesuseaneconomical
2、lyoptimalallocationconsideringdamagesduetototaldissolvedsolids(TDS)andinstitutionalconstraints.Theseinstitutionalconstraintsincludewatersupplyrequirementsunderinternationaltreatyandhistoricalallocationsofwatertoagriculture.Theincomefromwaterinmunicipaluse,basedontheconceptofcon
3、sumersurplus,isutilizedintheobjectivefunctionalongwithbene®tfromagriculturaluses,supplycosts,anddamagecostsduetopoorqualitywater,whichareestimatedusingavailabledata.Theresearchassessestheimpactthatsystem-wideoptimalallocationofwaterwillhaveinincreasingmonetarybene®tsandreducing
4、watersalinitylevelsintermsofTDSalongthereachoftheRioGrandefromElephantButte,NewMexico,toFortQuitman,Texas.Theanalysisisperformedunderthreeinstitutionalconstraints,whichinclude¯owregulationatthereservoir,restrictionsontradebetweenstates,andallowingtradebetweenthestates.Amongthes
5、escenarios,allowingtradebetweenthestatesresultsinthebestsolutionintermsofbothnetbene®tandreducingdamageduetopoorqualitywater.DOI:10.1061/(ASCE)0733-9496(2004)130:6(439)CEDatabasesubjectheadings:Watersupply;Waterquality;Wateruse;NewMexico;Texas.Introductionproject,whichconsistso
6、fapproximately52,610haofirrigatedagriculture;therapidlygrowingcitiesofElPaso,Texas;LasThisresearchassessestheeconomicbene®tsandimpactonwaterCruces,NewMexico;CiudadJuarez,Mexico;andothersmallerqualityofsystem-wideoptimalallocationofwaterintheRiocitiesandtowns.Thecombinedpopulati
7、onintheareaisinexcessGrandeProject,whichconsistsoftheElephantButteReservoirof2million.ThePercha,Leasburg,andMessilladiversiondamsanditsassociated320kms200midofcanalsinsouthernNewserveacreageintheElephantButteIrrigationDistrict(EBID)inMexicoandwesternTexas.Currently,waterallocat
8、ionisre-NewMexico;whereas,AmericanandRiversidediversio
