Nevada, the Silver State, was the 36th state admitted into the United States of America and the only complete continental state in the Southwest Commonwealth. In the late 23rd Century it is the front line in a war between the New California Republic and Caesar's Legion.
The basin is an endoheric watershed that covers much of Nevada excepting the region around Las Vegas and a stretch of the northeast near Idaho. This super-region actually extends a bit into California, Colorado, and Oregon contains various smaller regions.