WSP00824

• File Number: 8278.400
• Description: Title I - Mexican Treaty and Minute 242
• Basin: Colorado Mainstem
• Date: 1/1/1997
• Author: IBWC
• Title: Minute 242 Annual Report
• Water Supply Pro - Doc Type: Annual Report

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INTERNATIONAL BOUNDARY AND WATER COMMISSION
UNITED STATES AND MEXICO
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Mr. Randy Seaholm, Chief
Dept. of Natural Resources
721 State Centennial Building
1313 Sherman Street
Denver, CO 80220

Dear Mr. Seaholm:

I am pleased to enclose for your information the 1997 salinity operations report prepared under the
agreement with Mexico entitled "Permanent and Definitive Solution to the International Problem
of the Salinity ofthe Colorado River," incorporated in Minute No. 242 of the International Boundary
and Water Commission, United States and Mexico (IBWC), dated August 30, 1973. Thereport ~ls?~ c_" _ __ _
-._~~---- - -desGribes-developments-relating-to~other-provisiohs-ofMimiteNo.2ilZ.~~- - - - --- .-- - --

The salinity differentials for the calendar year 1997 between the average salinity of the Colorado
River waters arriving at Imperial Dam and the average salinity of the Colorado River waters
delivered upstream of Morelos Dam were 69 ppm (United States count) and 74 ppm (Mexican
count), which comply with the requirement in Minute No. 242.

"The United States shall adopt measures to assure that . . . the approximately
1,360,000 acre-feet (1,677,545,000 cubic meters) delivered to Mexico upstream of
Morelos Dam, have an annual average salinity of no more than 115 ppm :t 30 ppm
U.S. count (121 ppm:t 30 ppm Mexican count) over the annual average salinity of
Colorado River waters which arrive at Imperial Dam, . . ."
- -

If you have any questions or comments regarding this report, please contact Mr. YusufFarran, P.E.
at [phone].

Sincerely,

JLd1A ~ .of
.1~.~~

U CommISSIoner

Enclosure:
As stated