The Great Basin is a desert area in the western United States of America. It is very dry and very large, occupying most of the state of Nevada and extending into California, Idaho, Oregon, Utah, and a small part of Wyoming. In all, is about 200,000 square miles (520,000 square kilometers) in size. It is an 'endorheic' basin, which means that there is no outlet to the ocean. The Great Basin runs from the highest land in the Sierras and Rockies in the west, down to lowland deserts in the east.
Great Basin named deserts include the Black Rock Desert, the Great Salt Lake Desert, the Sevier Desert, the Smoke Creek Desert, Nevada salt deserts in the Great Basin Province, the Mojave Desert, and part of the Sonoran Desert.
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