High Plains (United States)

High Plains
A buffalo wallow on the High Plains.[1]
Physiographic regions of the United States. The High Plains region is the center yellow area designated 13d.[2]
Floor elevation1,800–7,000 ft (550–2,130 m)[3]
Length800 mi (1,300 km)
Width400 mi (640 km)
Area174,000 sq mi (450,000 km2) [3]
Geography
CountryUnited States
The High Plains ecology region is designated by 25 on this map.
Childress County, Texas, June 1938.

The High Plains are a subregion of the Great Plains, mainly in the Western United States, 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 High Plains are located in eastern Montana, southeastern Wyoming, southwestern South Dakota, western Nebraska, eastern Colorado, western Kansas, eastern New Mexico, the Oklahoma Panhandle, and the Texas Panhandle.[4] 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.[5] From east to west, the High Plains rise in elevation from around 1,800 to 7,000 ft (550 to 2,130 m).[3]

  1. ^ Darton, Nelson Horatio (1920). Syracuse-Lakin folio, Kansas. Folios of the Geologic Atlas, No. 212: United States Department of the Interior, U.S. Geological Survey. p. 17 (plate 2). Archived from the original on October 4, 2011. Retrieved October 6, 2010.{{cite book}}: CS1 maint: location (link)
  2. ^ "Physiographic Regions". U.S. Department of the Interior. U.S. Geological Survey. Archived from the original on May 15, 2006. Retrieved October 6, 2010.
  3. ^ a b c "USGS High Plains Aquifer WLMS". U.S. Department of the Interior. U.S. Geological Survey. Archived from the original on May 27, 2010. Retrieved October 6, 2010.
  4. ^ File:Level III ecoregions, United States.png
  5. ^ "Shaded relief image of the Llano Estacado". Handbook of Texas: Llano Estacado. June 15, 2010. Archived from the original on August 1, 2013. Retrieved August 6, 2013.