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The Rio Grande follows this rift for much of its course. The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. [1] The rift extends from central Colorado in the north to the state of Chihuahua, Mexico, in the south. [2]
The area along the Rio Grande was the source of several major battles, including the Battle of Resaca de la Palma near Brownsville. [18] The war ended in 1848 with the signing of the Treaty of Guadalupe Hidalgo which defined the United States' southern border as the Rio Grande. The change in government led to a mass migration from Tamaulipas to ...
Rio Grande southeast of Falcon Reservoir, Municipality of Mier, Tamaulipas, Mexico (August 12, 2007) In 1997, the US designated the Rio Grande as one of the American Heritage Rivers. Two portions of the Rio Grande are designated National Wild and Scenic Rivers System, one in northern New Mexico and the other in Texas, at Big Bend National Park.
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Map of the Middle Rio Grande Basin showing a section of the Rio Grande Valley (tan) before entering the Socorro Basin to the south. The entire Rio Grande Valley in New Mexico follows the Rio Grande Rift, a structural rift caused by the westward extension of the continental basement of the Western United States during the past 35 million years.
The geography of Texas is diverse and large. Occupying about 7% of the total water and land area of the U.S., [1] it is the second largest state after Alaska, and is the southernmost part of the Great Plains, which end in the south against the folded Sierra Madre Oriental of Mexico.
The Rio Grande water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. These geographic areas contain either the drainage area of a major river, or the combined ...