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Great Basin section

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Title: Great Basin section  
Author: World Heritage Encyclopedia
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Subject: Elko County, Nevada, United States physiographic region, Nellis Air Force Base, Great Basin, Black Rock Desert, Owens Valley, Sevier River, Toiyabe Range, Great Salt Lake Desert, Mormon Mountains
Publisher: World Heritage Encyclopedia

Great Basin section

This article is about the United States physiographic section. For the much larger hydrological subregion for which this area is named, see Great Basin. For the similar-sized WWF ecoregion, see Great Basin shrub steppe.
Great Basin section
physiographic region
Mexican Highland (22d) sections.
Location western United States
Area 170,000 sq mi (440,298 km2)
Biome Central Basin and Range ecoregion

The Great Basin section is a physiographic area which extends into the Colorado River watershed on the southeast (including the Las Vegas Valley and northwest corner of Arizona), as well as into the watersheds of the Klamath River (northwest) and Sacramento River (west).[1] The largest section of the Basin and Range Province was originally defined as two sections in 1917 (the northwest was the Oregon lakes section).[2][3]

The Great Basin section's northern border in Nevada is a portion of the Great Basin Divide, the southern border extends into the Mojave Desert, and the western border is primarily the Sierra escarpment. Small portions of the section extend into the Northern Basin and Range (ecoregion) and the Sonoran Desert Level III EPA ecoregions.[4][5]


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