Boundary Treaty of 1970

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.

SignedNovember 23, 1970 (1970-11-23)
LocationMexico City
EffectiveApril 18, 1972
Signatories
CitationsT.I.A.S. 7313
Languages

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 Hidalgo–Reynosa area was relocated to transfer from Mexico to the United States 481.68 acres (194.93 ha) by constructing a new 1.6-mile (2.6 km) earth channel. This transfer was made in exchange for the transfer from the United States to Mexico of two tracts of land, the Horcón Tract, after 1906 located south of the Rio Grande, and Beaver Island (La Isla de Morteritos), located in the river south of Roma, Texas, comprising 481.68 acres (194.93 ha) in total. This provision transferred to Mexico the portion of the town of Río Rico, Tamaulipas, located within the Horcón Tract.

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.

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gollark: The broader issue is that you have alienated a bunch of the community by imposing the noncompromise earlier.
gollark: As I said, I consider that compromise fine with regards to the specific issue it is actually addressing.
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gollark: Except you just unilaterally came up with that initial statement, so if I wanted to (and I totally do) I could reinterpret that as you demanding some stuff for nothing in return.

See also

References
  1. 22 U.S. Code § 277d–34 - American-Mexican Boundary Treaty, authorization for carrying out treaty provisions; investigations; land acquisition, purposes; damages, repair or compensation
  2. Robert J. McCarthy (2011). "Executive Authority, Adaptive Treaty Interpretation, and the International Boundary and Water Commission". U.S.-Mexico, 14-2 U. Denv. Water L. SSRN 1839903. Cite journal requires |journal= (help)

Sources
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