WSP01908

• File Number: 8278.300
• Description: Title I - Merxican Deliveries
• Basin: Colorado Mainstem
• Date: 2/1/1963
• Author: USDOI/BOR
• Title: Special Studies - Delivery of Water to Mexico
• Water Supply Pro - Doc Type: Publication

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(5) el.ectrical analog studies are under VB<! to determine opt1JDum

vell locations, PUllIPing scheduJ.es, and optimum J.ocation of til.e

drains; (6) J.aboratory modeJ. studies are under vB<! to determine

potential salinity of tUe drain effJ.uent.

In swmnary, these combined studies indicate that through a

change in cropping pattern and seJ.ective pUllIPing, peak salinities of

the vater delivered to Mexico can be heM vithin the J.1m1ts indicated

above, and that the soiJ.s in the MexicaJ.1 ValJ.ey can be irrigated

safely with the resuJ.ting Colorado River vaters that \IOWA be

'delivered to Mexico.

B. ConcJ.usions

1. GeneraL The proposed pJ.ans are in accord vith Congressional

directives and. the terms of the Water Treaty of 1944. The pl.an of

seJ.ective PUllIPing presented in Part VII of this report is engineer-

ingly feasibl.e and v1ll provide a reduction in the peak dissolved

solids concentrations in Colorado River vater delivered to Mexico

at MoreJ.os Dam. If Phase J. construction is authorized. by March 1963

and-a-crasb-program ~n~t~ateo., construction can be substantialJ.y

completed by October J.963 and. the peak salt concentrations reduced

to approx1:mately 2,000 ppm during the \linter of J.963-6lt-.

Construction of vorks contempJ.ated in Phase 2 vi11 reduce the

pellk salinity concentrations in vater deJ.ivered to Mexico to about

J.,800 ppm, provide fJ.ood protection to project vorks, reduce non-

beneficial phreatophyte uses, and provide better reguJ.ation of vater

deliveries to Mexico.

Phase 3 construction v1J.l provide integration of ground-vater

pumping vith the river reguJ.ation provided by Senator Wash ReguJ.atory

v