Water Shortage Issue Related to the Mexican Water Deficit
- The Issue
- Rio Grande Watermaster Reports
- Letters Pertaining to Mexican Water Deficit
- IBWC's Minute 309 and Letters
- AgriLife Study: Economic Impact Estimate of Irrigation Water Shortages on the Lower Rio Grande Valley Agriculture
- Addressing Mexico's Water Deficit to the United States
The failure of Mexico to consistently deliver water in accordance with the 1944 water treaty between the United States and Mexico significantly harms Texas interests.
The treaty requires delivery from certain tributaries in Mexico to the United States of not less than an average of 350,000 acre feet annually, in cycles of five consecutive years. Mexico has failed to deliver the amount of water owed resulting in hardship for Texas' water users who rely on that water for irrigation, as well as municipalities that need the irrigation water to convey public drinking water supplies.
The International Boundary and Water Commission, in conjunction with the U.S. State Department, has the responsibility to enforce the treaty, but has not been successful in doing so in spite of the fact that the United States has implemented actions to the benefit of Mexico on numerous occasions.
Rio Grande Watermaster Reports
This report is for the week ending 11/30/2013.
- The current cycle began on October 25, 2010.
- The pro-rated deficit as of 11/30/2013 is 274,725 AF for this cycle.
- During the first year of the cycle, Mexico delivered 288,309 AF, during the second year 100,401 AF, during the third year 392,142 AF and to date 28,944 AF for the fourth year.
- The running total of deliveries for this 5-year cycle is 809,796 AF.
- The Mexican Reservoirs report shows, as a whole, a total of 69.30% average capacity. It should be noted that Presa FI Madero – Rio San Pedro is at 120% with zero discharge to the Rio Conchos at this time. Presa Luis Leon is at 103% of normal capacity with 18.95 cms / 669 cfs discharge to the Rio Conchos, leading to the Rio Grande, and also of note, downstream of Falcon, Presa Marte Gomez –on the Rio San Juan is at 104% of normal capacity with zero discharge at this time.
- As of 11/30/13, the United States has 893,402 AF in Amistad and 530,204 AF in Falcon.
- Mexico has 573,983 AF in Amistad and 412,651 AF in Falcon.
- The Amistad Reservoir is currently at: 1080.68 ft -36.32 with a release of 20.0 cms/706 cfs
- Falcon Reservoir is currently at: 274.20 ft -27.00 with a release of 5.0 cms/176 cfs
Ownership of Water – Amistad/Falcon
Report dated 11/30/2013.
On November 30, 2013, the U.S. combined ownership at Amistad/Falcon stood at 41.97% of normal conservation capacity, impounding 1,423,607 acre-feet, up from 40.97% (1,389,557 AF) of normal conservation a year ago at this time. Overall the system is holding 40.70% of normal conservation capacity, impounding 2,410,241 acre-feet with Amistad at 44.80% of conservation capacity, impounding 1,467.385 acre-feet and Falcon at 35.62% of conservation capacity, impounding 942,856 acre-feet. Mexico has 38.99% of normal conservation capacity, impounding 986,634 acre-feet at Amistad/Falcon.
- City of Alton
- Cameron County
- Cameron County Irrigation District #2
- East Rio Hondo Water Supply Corporation
- Hidalgo County Irrigation District #2
- City of Hidalgo
- City of Los Fresnos
- Lower Rio Grande Valley Development Council
- City of McAllen
- North Alamo Water Supply Corporation
- City of Palm Valley
- City of Pharr
- City of Primera
- Rio Grande Regional Water Authority
- City of San Benito
- City of South Padre Island
- City of Weslaco
Letters Pertaining to Mexican Water Deficit
- September 10, 2013 Letter from TDA Commissioner Staples and TWDB Chairman Rubinstein to U.S. Ambassador to Mexico E. Anthony Wayne
- June 11, 2013 Letter from U.S. State Department to Commissioner Rubinstein
- May 22, 2013 Letter from Commissioner Rubinstein to U.S. State Department
- April 15, 2013 Letter from Texas Citrus Mutual to U.S. State Department
- April 11, 2013 Letter from Congressional Delegation to President Obama
- April 9, 2013 Letter from Governor Perry to President Obama
- April 9, 2013 Letter from Rio Grande Regional Water Authority to Rep. Vela
- April 9, 2013 Letters from Cameron County Irrigation District
- April 9, 2013 Letters from Delta Irrigation District
- April 5, 2013 Letter from IBWC to Congressional Delegation