Minute No. 318

• Description: ADJUSTMENT OF DELIVERY SCHEDULES FOR WATER ALLOTTED TO MEXICO FOR THE YEARS 2010 THROUGH 2013 AS A RESULT OF INFRASTRUCTURE DAMAGE IN IRRIGATION DISTRICT 014, RIO COLORADO, CAUSED BY THE APRIL 2010 EARTHQUAKE IN THE MEXICALI VALLEY, BAJA CALIFORNIA
• State: CO
• State: NV
• State: CA
• State: UT
• State: AZ
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 12/17/2010
• Author: Edward Drusina Adolfo Mata Roberto F. Salmon Castelo Jose de Jesus Luevano Grano
• Title: ADJUSTMENT OF DELIVERY SCHEDULES FOR WATER ALLOTTED TO MEXICO FOR THE YEARS 2010 THROUGH 2013 AS A RESULT OF INFRASTRUCTURE DAMAGE IN IRRIGATION DISTRICT 014, RIO COLORADO, CAUSED BY THE APRIL 2010 EARTHQUAKE IN THE MEXICALI VALLEY, BAJA CALIFORNIA
• Water Supply Pro - Doc Type: Contract/Agreement

INTERNATIONAL BOUNDARY AND WATER COMMISSION
UNITED STATES AND MEXICO.
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pursuant to Article 10(a) of the 1944 Water Treaty may be adjusted downward as
follows: from the date this Minute shall enter into force through December 31,
2013, by a maximum of 260,000 acre -feet (320 mcm).
2. Any request for a downward adjustment for the years 2010 through 2013, as
provided in Resolution 1 above, shall be communicated by the Mexican
Commissioner through a timely notification to the U.S. Commissioner, by means
of a letter indicating the volumes affected by this change in delivery schedule and
the months to which said volumes correspond.
3. Taking into account evaporation losses associated with the adjustment in the
delivery schedule, beginning in 2011, on December 31 of any year in which the
volumes referred to in Resolution 2 above or any portion thereof have not yet been
delivered to Mexico, a 3% annual evaporation loss shall be charged against and
deducted from those volumes remaining to be delivered. This percentage will not
be applied to any year in which the volumes referenced in Resolution 2 of this
Minute cannot be delivered to Mexico because of operational issues in the United
States.
4. Taking into account the potential impact that the adjustment in the schedule for
delivering water to Mexico for the period from 2010 through 2013 may have on
the salinity differential between Imperial Dam and the Northerly International
Boundary described in Resolution 1. a) of Minute No. 242, "Permanent and
Definitive Solution to the International Problem of the Salinity of the Colorado
River," dated August 30, 1973, the aforementioned salinity differential will be
calculated as if the volume of water referred to in Resolution 2 above were
delivered from Imperial Dam to the Northerly International Boundary, consistent
with the Water Deliveries Monitoring adopted in the Amended Joint Report of the
Principal Engineers associated with Minute No. 314, "Extension of the Temporary
Emergency Delivery of Colorado River Water for Use in Tijuana, Baja
California," dated November 14, 2008_ The adjustments to the delivery schedule
will be made, insofar as practicable, in such a way as to minimize the impact on
salinity at the Northerly International Boundary, recognizing that Mexico and the
non - governmental organizations may convey water through the Wellton - Mohawk
Bypass Drain to the Santa Clara Wetland under Minute No. 316, "Utilization of the
Wellton- Mohawk Bypass Drain and Necessary Infrastructure in the United States
for the Conveyance of Water by Mexico and Non - Governmental Organizations of
Both Countries to the Santa Clara Wetland During the Yuma Desalting Plant Pilot
Run," dated April 16, 2010, which action would have a favorable impact on
salinity at the Northerly International Boundary.