Boundary Treaty of 1970
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Treaty to Resolve Pending Boundary Differences and Maintain the Rio Grande and Colorado River as the International Boundary | |
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Signed | November 23, 1970 |
Location | Mexico City |
Effective | April 18, 1972 |
Signatories | |
Citations | T.I.A.S. 7313 |
Languages |
The Boundary Treaty of 1970 is a treaty between the United States and Mexico that settled all outstanding boundary disputes and uncertainties related to the Rio Grande (Río Bravo del Norte) border between them.
The most significant dispute remaining after the Chamizal Settlement in 1963 involved the location of the boundary in the area of Presidio, Texas, and Ojinaga, Chihuahua. The river channel was relocated to approximate conditions existing prior to the dispute that arose from changes in the course of the river in 1907. The International Boundary and Water Commission was charged with its implementation. The American-Mexican Treaty Act of October 25, 1972 authorized participation by the United States IBWC section.[1] The project commenced in 1975 and completed in 1977.[2]
Provisions
The river was relocated in two reaches by the construction of a new 4.7-mile (7.6 km) channel in one reach and 3.6 miles (5.8 km) in the other. The relocated channel was aligned in the reach above Presidio-Ojinaga so as to transfer from north to the south side of the river 1,606.19 acres (650.00 ha) and in the second reach downstream from the two cities so as to transfer from the south to the north side a net area of 252 acres (102 ha). It is an earth channel with dimensions patterned after the natural channel. The United States acquired 1,969.22 acres (796.92 ha) of American agricultural land that was used for the transfer of lands to Mexico and for half of the river relocation.
Also, the channel of the Rio Grande in the
The cost of the two relocations was shared equally by the two governments, with the United States performing the greater part of the work required in the Presidio-Ojinaga area, and Mexico performing the work required in the Hidalgo-Reynosa area and a small part of the work required in the Presidio-Ojinaga area.
See also
- Rio Grande border disputes
- United States territorial acquisitions
- Mexico–United States border
References
Sources
- "US-Mexico Joint Projects". Ibwc.state.gov. Archived from the original on 2006-01-06. Retrieved 2016-12-08.