The High Plains are a subregion of the

Great Plains The Great Plains (french: Grandes Plaines), sometimes simply "the Plains", is a broad expanse of flatland in North America. It is located west of the Mississippi River and east of the Rocky Mountains, much of it covered in prairie, steppe, a ...

, mainly in the

Western United States The Western United States (also called the American West, the Far West, and the West) is the region comprising the westernmost states of the United States. As American settlement in the U.S. expanded westward, the meaning of the term ''the We ...

, but also partly in the Midwest states of Nebraska, Kansas, and South Dakota, generally encompassing the western part of the Great Plains before the region reaches the

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico ...

. The High Plains are located in eastern Montana, southeastern

Wyoming Wyoming () is a state in the Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the southwest, and Colorado to t ...

, southwestern

South Dakota South Dakota (; Sioux: , ) is a U.S. state in the North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Lakota and Dakota Sioux Native American tribes, who comprise a large po ...

, western

Nebraska Nebraska () is a state in the Midwestern region of the United States. It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the sout ...

, eastern Colorado, western

Kansas Kansas () is a U.S. state, state in the Midwestern United States, Midwestern United States. Its Capital city, capital is Topeka, Kansas, Topeka, and its largest city is Wichita, Kansas, Wichita. Kansas is a landlocked state bordered by Nebras ...

, eastern New Mexico. The southern region of the Western High Plains ecology region contains the geological formation known as Llano Estacado which can be seen from a short distance or on satellite maps. From east to west, the High Plains rise in elevation from around .

Name

The term "Great Plains", for the region west of about the 96th or 98th meridian and east of the Rocky Mountains, was not generally used before the early 20th century. Nevin Fenneman's 1916 study, ''Physiographic Subdivision of the United States'', brought the term Great Plains into more widespread usage. Prior to 1916, the region was almost invariably called the High Plains, in contrast to the lower Prairie Plains of the Midwestern states. Today the term "High Plains" is usually used for a subregion instead of the whole of the Great Plains.

Geography and climate

The High Plains has a "cold semi-arid" climate— Köppen ''BSk''—receiving between of precipitation annually. Due to low moisture and high elevation, the High Plains commonly experiences wide ranges and extremes in temperature. The temperature range from day to night is usually 30 °F (~16.5 °C), and 24-hour temperature shifts of 100 °F (~55.5 °C) are possible, as evidenced by a weather event that occurred in Browning, Montana, from 23 January 1916 to 24 January 1916, when the temperature fell from . This is the world record for the greatest temperature change in 24 hours. The region is known for the steady, and sometimes intense, winds that prevail from the west. The winds add a considerable wind chill factor in the winter. The development of

wind farm A wind farm or wind park, also called a wind power station or wind power plant, is a group of wind turbines in the same location used to produce electricity. Wind farms vary in size from a small number of turbines to several hundred wind turb ...

s in the High Plains is one of the newest areas of economic development. The High Plains are anomalously high in elevation. An explanation has recently been proposed to explain this high elevation. As the Farallon plate was subducted into the mantle beneath the region, water trapped in hydrous minerals in the descending slab was forced up into the lower crust above. Within the crust this water caused the hydration of dense

garnet Garnets () are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives. All species of garnets possess similar physical properties and crystal forms, but differ in chemical composition. The different ...

and other phases into lower density

amphibole Amphibole () is a group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Its IMA symbol is ...

and

mica Micas ( ) are a group of silicate minerals whose outstanding physical characteristic is that individual mica crystals can easily be split into extremely thin elastic plates. This characteristic is described as perfect basal cleavage. Mica is ...

minerals. The resulting increase in crustal volume raised the elevation about one mile.

Flora

Typical plant communities of the region are

shortgrass prairie The shortgrass prairie is an ecosystem located in the Great Plains of North America. The two most dominant grasses in the shortgrass prairie are blue grama (''Bouteloua gracilis'') and buffalograss ('' Bouteloua dactyloides''), the two less do ...

, prickly pear cacti and scrub. Sagebrush steppe is also present, particularly in high and dry areas closer to the Rocky Mountains.

Economy

Agriculture in the forms of

cattle Cattle (''Bos taurus'') are large, domesticated, cloven-hooved, herbivores. They are a prominent modern member of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Adult females are referred to as cows and adult ...

ranching and the growing of

wheat Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus ''Triticum'' ; the most widely grown is common wheat (''T. aestivum''). The archaeologi ...

corn Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. The ...

, and

sunflower The common sunflower (''Helianthus annuus'') is a large annual forb of the genus ''Helianthus'' grown as a crop for its edible oily seeds. Apart from cooking oil production, it is also used as livestock forage (as a meal or a silage plant), ...

s is the primary economic activity in the region. The aridity of the region necessitates either dryland farming methods or irrigation; much water for irrigation is drawn from the underlying Ogallala Aquifer, which makes it possible to grow water-intensive crops such as corn, which the region's aridity would otherwise not support. Some areas of the High Plains have significant

petroleum Petroleum, also known as crude oil, or simply oil, is a naturally occurring yellowish-black liquid mixture of mainly hydrocarbons, and is found in geological formations. The name ''petroleum'' covers both naturally occurring unprocessed crud ...

and

natural gas Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbon d ...

deposits. The combination of oil, natural gas, and wind energy along with plentiful underground water, has allowed some areas (such as West Texas) to sustain a range of economic activity, including occasional industry. For example, the

ASARCO Asarco LLC (American Smelting and Refining Company) is a mining, smelting, and refining company based in Tucson, Arizona, which mines and processes primarily copper. The company has been a subsidiary of Grupo México since 1999. Its three larg ...

refinery in

Amarillo, Texas Amarillo ( ; Spanish for " yellow") is a city in the U.S. state of Texas and the seat of Potter County. It is the 14th-most populous city in Texas and the largest city in the Texas Panhandle. A portion of the city extends into Randall Cou ...

has been in operation since 1924 due to the plentiful and inexpensive natural gas and water that are needed in metal ore refining.

Demographics

The High Plains has one of the lowest population densities of any region in the continental United States;

, for example, has the second lowest

population density Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopu ...

in the country after

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U ...

. In contrast to the stagnant population growth in the northern and western High Plains, cities in west Texas have shown sustained growth; Amarillo and Lubbock both have populations near or above 200,000 and continue to grow. Smaller towns, on the other hand, often struggle to sustain their population.

Major cities and towns

* Alliance,

* Amarillo,

Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...

* Benkelman,

* Colby,

* Chadron,

Chappell Chappell may refer to: Places * Chappell, Nebraska, United States * Chappells, South Carolina, United States * Chappell (crater) on the moon * Mount Chappell Island, Tasmania, Australia * North West Mount Chappell Islet, Tasmania, Australia Organi ...

Cheyenne The Cheyenne ( ) are an Indigenous people of the Great Plains. Their Cheyenne language belongs to the Algonquian language family. Today, the Cheyenne people are split into two federally recognized nations: the Southern Cheyenne, who are enr ...

* Clovis,

New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe, New Mexico, Santa Fe , LargestCity = Albuquerque, New Mexico, Albuquerque , LargestMetro = Albuquerque metropolitan area, Tiguex , Offi ...

* Colorado Springs,

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the ...

Denver Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the Unit ...

* Dodge City,

* Fort Morgan,

* Garden City,

* Goodland,

* Gering,

* Grant,

* Greeley,

* Guymon, Oklahoma * Hays,

* Hobbs,

Imperial Imperial is that which relates to an empire, emperor, or imperialism. Imperial or The Imperial may also refer to: Places United States * Imperial, California * Imperial, Missouri * Imperial, Nebraska * Imperial, Pennsylvania * Imperial, Texas ...

* Kimball,

* La Junta,

* Lamar,

Las Vegas Las Vegas (; Spanish for "The Meadows"), often known simply as Vegas, is the 25th-most populous city in the United States, the most populous city in the state of Nevada, and the county seat of Clark County. The city anchors the Las Veg ...

* Liberal,

* Lubbock,

* Midland,

* Odessa,

* Ogallala,

* Pecos,

* Pine Ridge,

Porcupine Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation. The term covers two families of animals: the Old World porcupines of family Hystricidae, and the New World porcupines of family, Erethiz ...

* Portales,

* Roswell,

* Sidney,

Santa Rosa Santa Rosa is the Italian, Portuguese and Spanish name for Saint Rose. Santa Rosa may also refer to: Places Argentina * Santa Rosa, Mendoza, a city * Santa Rosa, Tinogasta, Catamarca * Santa Rosa, Valle Viejo, Catamarca *Santa Rosa, La Pampa * S ...

Scottsbluff Scottsbluff is a city in Scotts Bluff County, in the western part of the state of Nebraska, in the Great Plains region of the United States. The population was 14,436 at the 2020 census. Scottsbluff is the largest city in the Nebraska Panha ...

* Sterling,

Tucumcari Tucumcari (; ) is a city in and the county seat of Quay County, New Mexico, United States. The population was 5,278 at the 2020 census. Tucumcari was founded in 1901, two years before Quay County was established. History In 1901, the Chicago, ...

* Ulysses,

* Vaughn,

* Willard,

Gallery

File:High Plains in Oklahoma west of Guymon.JPG, High Plains in Oklahoma west of Guymon (2009) File:HighPlainsCimarronCountyOklahoma17March2009.JPG, Cimarron County near Boise City. (2009) File:HighPlainsSilosNearStratfordTexasMarch2009.JPG, Grain silos, a common sight on the High Plains. (2009) File:Colorado High Plains Dirt Road.JPG, High Plains in Southeastern Colorado (2009) File:Sabinoso Wilderness (9503869664).jpg, The High Plains are broken in places by canyons, such as this one in Sabinoso Wilderness in New Mexico.

References

External links

High Plains Regional Climate Center
High Plains climatological resources

- U.S. Department of the Interior (with map)
Texas counties map showing the ecoregion
* {{Authority control Grasslands of the North American Great Plains Temperate grasslands, savannas, and shrublands in the United States Ecoregions of the United States Flora of the United States

Flora of Texas Flora is all the plant life present in a particular region or time, generally the naturally occurring ( indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms ''gut flora'' or '' skin flora''. ...

Regions of the Western United States Regions of Colorado Regions of Kansas Regions of Montana Regions of Nebraska Regions of North Dakota Regions of South Dakota Regions of Oklahoma Regions of Texas Regions of Wyoming *High Physiographic sections Nearctic ecoregions