Great Basin Desert
A high-elevation cold desert between the Sierra Nevada and Wasatch Range.
via Wikipedia: Great Basin Desert · see source
The Great Basin Desert is a temperate desert in the western United States, located between the Sierra Nevada and the Wasatch Range. It is one of the four biologically defined deserts in North America, alongside the Mojave, Sonoran, and Chihuahuan Deserts. The desert is characterized by basin and range topography, with wide valleys bordered by parallel north–south mountain ranges, and its ecology varies significantly with altitude and geography. The desert spans large portions of Nevada and Utah, and extends into eastern California.
- Location
- Western United States (Nevada, Utah, eastern California)
- Type
- Temperate desert
- Area_definition
- Overlaps the Great Basin shrub steppe (WWF) and Central Basin and Range ecoregio
- Climate
- Hot, dry summers; cold, snowy winters
- Elevation_range
- Valleys above 3,900 ft (1,200 m); peaks over 9,800 ft (3,000 m)
- Precipitation
- Averages 9 inches (230 mm) in west, 12 inches (300 mm) in east
- Notable_feature
- Rain shadow of the Sierra Nevada
Lore & Background
The Great Basin Desert formed due to the rain shadow of the Sierra Nevada, which blocks moisture from the Pacific Ocean, while the Rocky Mountains restrict moisture from the Gulf of Mexico. Its climate is characterized by extremes: hot, dry summers and cold, snowy winters, with temperatures varying dramatically between valley floors and mountain peaks. The desert contains more than 33 peaks above 9,800 feet (3,000 m), and valleys are typically above 3,900 feet (1,200 m) in elevation. The environment is influenced by Pleistocene lakes that dried after the last ice age: Lake Lahontan and Lake Bonneville. Each of these lakes left different amounts of salinity and alkalinity.
Reader's Guide
The Great Basin Desert is significant as one of North America's four biologically defined deserts, distinguished by its cold, high-elevation climate and basin and range topography. Its biological communities vary from low salty dry lakes and sagebrush valleys to pinyon-juniper forests, creating many isolated habitats. Over 600 species of vertebrates live in the floristic Great Basin, which has a similar areal footprint to the ecoregion. Sixty-three of these species have been identified as species of conservation concern due to contracting natural habitats (for example, Centrocercus urophasianus, Vulpes macrotis, Dipodomys ordii, and Phrynosoma platyrhinos). The desert's boundaries are not clearly defined; scientists use different definitions, often based on the absence of creosote bush (Larrea tridentata). The region's ecology is also influenced by Pleistocene lakes Lahontan and Bonneville, which left varying salinity and alkalinity. The Great Basin Desert is the coldest of the deserts in North America.
Did You Know?
- The Great Basin Desert is the coldest of the four biologically defined deserts in North America.
- More than 33 peaks within the desert have summits higher than 9,800 feet (3,000 m).
- The desert formed by the rain shadow of the Sierra Nevada, which blocks moisture from the Pacific Ocean.
- Over 600 species of vertebrates live in the floristic Great Basin, with 63 identified as species of conservation concern.
- The environment is influenced by Pleistocene lakes Lahontan and Bonneville, which left different amounts of salinity and alkalinity.
Frequently Asked Questions
What is the Great Basin Desert?
It is a temperate desert in the western United States, sitting between the Sierra Nevada to the west and the Wasatch Range to the east. It is one of only four biologically defined deserts on the North American continent, the others being the Mojave, Sonoran, and Chihuahuan.
Where exactly does the Great Basin Desert stretch across?
The desert covers large swaths of Nevada and Utah and extends into eastern California. Its valleys sit above roughly 3,900 feet, while surrounding peaks can climb past 9,800 feet, creating a dramatic elevation spread.
What is the climate like in the Great Basin Desert?
Summers are hot and dry while winters bring cold and snow, making it a true cold desert rather than a hot one. Annual precipitation is modest, averaging about nine inches in the western portion and around twelve inches farther east.
What makes the Great Basin Desert's landscape distinctive?
Its terrain is defined by basin-and-range topography, where broad valleys are flanked by parallel north-south mountain ranges. This alternating pattern of basins and ridges gives the region its name and shapes the way ecosystems shift with altitude and geography.
Why is the Great Basin Desert considered important in North American geography?
It is one of just four deserts recognized by biological criteria across the entire continent, giving it a unique ecological identity. Its high-elevation setting and cold-dry climate set it apart from the warmer lowland deserts to the south and make it a key reference point for studying temperate arid ecosystems.
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