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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PART I. INTRODUCTION

A. Background
Colorado River water is delivered to Mexico at the f'ollowing
locations:
1. In the Colorado River at the northerl,y international
boundary about one mile above Morelos Dam,
2. Waste~s in the 11m1trophe section of' the river
below Morelos Dam.
3. Across the international land boundary near Ban Luis,
Mexico.
MOntb1y amounts of' water are delivered to Mexico in accordance with
a'schedule submitted by Mexico, by January 1 of' each year, as provided
in the Treaty of' 1944 between the United States and Mexico. The
treaty f'urther provides that Mexico must accept a minimum delivery
of 900 cf's during the winter months of October, November, December,
January, and February. During the past year, the highest salinity
\;U.Ll\;~lJtrat1ona-have-occurred-1:n-tlreBe mon th13 .
Prior to the winter of 1961, bef'ore the Well ton-Mohawk drainage

conveyance channel was placed in operation, Mexico, without protest,

accepted the water as scheduled and delivered. During the winter
of' 1901-1962, after the drainage conveyance channel was placed in
complete operation in August 1961, the vater delivered at Morelos
Dam shoved a marked increase in dissolved solids content,
As a result of' Mexican protests over the increased salinity,
the Presidents of the United States and Mexico, on March 16, 1962,

agreed to seek a solution of the salinity problem in connection with

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