The Great Basin Desert is between the Sierra Nevada Mountains and the Rocky Mountains.
The Great Basin
basin and range
The best answer for a common or popular name would be the Intermountain Region. However, the general area includes the Great Basin (though not all of it is desert) and part of the Colorado River Basin.
Much of the region is occupied by the Great Basin Desert.
The Great Basin
Sierra Neveda
Central Valley :)
The Basin and Range region is located in the western United States, covering parts of Nevada, Utah, California, and Oregon. It is characterized by alternating parallel mountain ranges and flat valleys, creating a distinctive landscape.
Some of the prominent mountains in the Basin and Range Province include the Sierra Nevada, Snake Range, Ruby Mountains, Wasatch Range, and Granite Mountains. These mountains are characterized by parallel ridges and valleys, which are a result of stretching and pulling apart of the Earth's crust.
The pioneers crossing the Sierra Nevada were generally trying to go to California. For example, the Donner Party emigrated from the United States to California in 1846 by crossing the Rocky Mountains, Great Basin, and finally the Sierra Nevada in order to settle in Mexican California.
The Great Basin region and Mojave Desert receive less rainfall than the western side of the Sierra Nevada primarily due to the rain shadow effect. As moist air from the Pacific Ocean rises over the Sierra Nevada mountains, it cools and condenses, leading to precipitation on the western slopes. Once the air descends on the eastern side, it warms and loses its moisture, resulting in significantly drier conditions in the Great Basin and Mojave Desert. This topographic barrier thus creates a stark contrast in rainfall patterns between the two sides.