WSP00291

• File Number: 8278.400
• Description: Title I - Mexican Treaty
• Basin: Colorado Mainstem
• Date: 3/1/1962
• Author: IBWC
• Title: Mexican Water Treaty -Appendix B - Water Quality A Missing
• Water Supply Pro - Doc Type: Publication

On page 2 of the Hearings we find the following language from the

letter from the Secretary of State to the President of the United State$ explain-

ing the treaty to the President and requesting that it be submitted to the Senate

for its "advice and consent". After explaining the amount of the Mexican

deliveries, the letter states:

"These quantities, which may be rre. de up of any waters of
the Colorado River from any and all sources, whether direct river
flows, return flow, or seepage, will be delivered by the United
States in the boundary portion of the Colorado River except that
until 1980 Mexico may receive 500,000 acre-feet annually, and
after that year 375,000 acre-feet annually through the All-American
Canal, as part of the guaranteed quantity."

This same let~er on page 3 of the Hearings after explaining the schedule provision

of Article 15 states:

"These schedules are subject to certain limitations,
espeCially in regard to rates of flow at different times of the
year, in order to provide assurance that the United States,
in the period of ultimate development, will obtain credit for
practically all of the flows that will be expected in the river
as the resuit of United States uses and operations."

While it is true this lettGr from the Secretary of State .19 the President of the

United Stat(,~ 8xplaining the treaty does not directly deal with the quality

question, it does unmistakenly set forth:

(a) that United Stat8s deliveries can be made from any and all
sources, and

(b) that provision for the scheduling of the deliveries throughout
the yp.ar is so arranged that Unit8d States can receive credit
for all the flows which will be in the river at the time United
States has reached ultimate development.

B 4