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New Mexico Geography: The Land

Geography and Landforms of New Mexico

New Mexico Geography: Land RegionsFind an overview of New Mexico geography, topography, geographic land regions, land areas, and major rivers.

Access New Mexico almanac furnishing more details on the state geography, geographical and land regions, climate and weather, elevation, land areas, bordering states, and other statistical data.

The state of New Mexico consists of four land regions.

  • Great Plains
  • Colorado Plateau
  • Rocky Mountains
  • Basin and Range Region

New Mexico Highest, Lowest, & Mean Elevations

Mean Elevation 5,700 ft.
Highest Point Wheeler Peak
13,161 ft.
Lowest Point Red Bluff Reservoir
2,842 ft.

New Mexico Land Area (Square Miles)

Geographic Center In Torrance County, 12 mi. SSW of Willard
Longitude: 106 6.7'W
Latitude: 34 30.1'N
Total Area 121,589.48 sq. mi.
5th
Land Area 121,355.53 sq. mi.
99.81%
Water Area 233.96 sq. mi.
0.19%
Forested Land Area 20%
Dimensions
(Length - Width)
370 miles - 343 miles
Source:(US Census, April 1, 2000)

New Mexico: Physiographic Areas

Chihuahuan DesertChihuahuan Desert

In the United States, the Chihuahuan Desert includes the Trans-Pecos of Texas, southern New Mexico, and a small area in southeast Arizona. Broad basins and valleys bordered by sloping alluvial fans and terraces make up the dry lowlands of this region, punctuated by occasional mesas and mountain ranges. The Rio Grande and Pecos are the primary rivers of the Chihuahuan Desert. In this arid region, riparian corridors provide important habitat for breeding, in-transit, and wintering birds. Other drainages end in closed basins and include few permanent streams. Arid grass and shrubland are the primary lowland vegetation types, often dominated by creosote. This grades uphill into oak-juniper woodlands and even coniferous forest in the highest reaches. The Madrean mountains mark its western edge, the Edwards Plateau its east, and the reduced shrubbiness of the shortgrass plains its north. The Chihuahuan Desert extends south across much of the Central Plateau of Mexico, bordered by the Sierra Madre Occidental and Oriental.

Colorado PlateauColorado Plateau

The Colorado Plateau is centered on the four corners area and extends into Colorado, Utah, Arizona, and New Mexico. It is an area of tablelands with moderate to high relief dissected by narrow and widely-spaced stream valleys. The Colorado Plateau is characterized by limited precipitation, cold winters and hot summers. Lowest elevations are covered with arid shrublands with grass interspersed. Sagebrush is dominant over large areas, with cottonwoods along perennial water courses. At moderate elevations, woodland vegetation is dominated by pinyon pine and juniper, with various shrubs intermixed. Montane forest is in high elevations, with ponderosa pine and Douglas fir dominant to the south and lodgepole pine and aspen farther north.

Mesa and PlainsMesa and Plains

This physiographic area is located almost entirely in central New Mexico. Major landforms are valleys, lowlands, outwash plains, and alluvial fans and terraces. The middle reach of the Rio Grande is found here. Grama and galleta grasses and four-wing saltbush occur along with sand sage at lower elevations, pinyon-juniper at higher elevations, and conifers are in the scattered mountain ranges. Riparian strips along water courses have cottonwood-willow and non-native salt cedar.

Mexican HighlandsMexican Highlands

The isolated mountain ranges of southeastern Arizona and southwestern New Mexico represent the northern terminus of the Sierra Madre Occidental. Elevation determines vegetation, with Douglas fir and pine at higher elevations giving way to oak-dominated forest at lower elevations. Lowlands surrounding the ranges are desert grasslands similar to the Sonoran Desert on the west and Chihuahuan desert on the east.

Mogollon RimMogollon Rim

The Mogollon Rim is primarily in Arizona, extending somewhat into southwest New Mexico. Lower elevations and latitude differentiate this highland from other mountains to the north and east. Open ponderosa pine forests dominate much of the area, with oak woodlands, pinyon-juniper, and chaparral at lower elevations.

Pecos and Staked PlainsPecos and Staked Plains

The Staked and Pecos Plains cover the western panhandle of Texas, the west end of the panhandle of Oklahoma, and extensive areas in eastern New Mexico. These high and dry plains are covered with a shortgrass prairie dominated by grama and buffalo grasses. There are also extensive areas of shinnery, a midgrass prairie with low shrubs. The area grades into taller grass to the east, to Trans-Pecos shrub savannah to the south, and more chaparral and pinyon-juniper in the Mesas and Plains area to the west. The northern border of Oklahoma is established as an arbitrary northern limit.

Southern Rocky MountainsSouthern Rocky Mountains

Central Colorado makes up the bulk of the Southern Rockies, which extend into northern New Mexico and southern Wyoming. Steep, rugged mountains cover this region, and vegetation varies greatly on the basis of elevation and aspect. Alpine tundra gives way to various coniferous forests often with aspen intermixed. Ponderosa pine is at lower elevations, pinyon-juniper below that, and grasslands in the lowest areas. Because of topography, weather, avalanches, fire, insect outbreaks, and disease, forests in the Southern Rocky Mountains tend to be patchier than in many other areas. The landscape is thus a complex mosaic of open meadows and forest stands of varying age and species composition.

New Mexico Landscape and Landforms:

Great Plains

The Great Plains cover the eastern third of the state. This region consists of a high plateau intersected by deep canyons. This area is use for sheep and cattle ranches. To the south, dry farming and irrigated agriculture is possible. South of the Canadian River, along the eastern edge of New Mexico, the land is referred to as the High Plains or Staked Plains (Llano Estacado). These High Plains run along the Texas border in New Mexico.

Colorado Plateau

To the northwest of the state is a rugged area of wide valleys, deep canyons, sharp cliffs, and flat-topped hills called mesas. The Continental Divide runs through the Colorado Plateau. Streams west of the Divide drain into the Pacific Ocean. Those to the east run to the Gulf of Mexico.

Rocky Mountains

Located in the central part of New Mexico, the Rocky Mountains extend into New Mexico from Colorado to the north. The Rio Grande River cuts through the Rocky Mountains from north to south. The Sangre de Cristo (Blood of Christ) Mountain range, east of the Rio Grane .Wheeler Peak, the highest point in New Mexico is found in this range. To the west of the Rio Grande are the Nacimiento and Jemez Mountain ranges. The fertile Rio Grande Valley provides suitable farm land using modern irrigation techniques.

Basin and Range Region

The Basin and Range region is found to the southwest and covers nearly one third of New Mexico. It consists of scattered mountain ranges intersected by desert basins. The Rio Grande River flows through the region and is harnessed by the Elephant Butte Dam which provides a major source of irrigation for farming.

US Geography
US Map: State Geography
Geography is a field of science dedicated to the study of the lands, the features, the inhabitants, and the phenomena of the Earth.

The term "United States", when used in the geographical sense, means the continental United States, Alaska, Hawaii, Puerto Rico, Guam, and the U.S. Virgin Islands.


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