Ash Meadows National Wildlife Refuge is located in southern Nevada 90 miles northwest of Las Vegas. Encompassing over 23,000 acres of spring-fed wetlands, Ash Meadows is a desert wetland ecosystem providing habitat for at least 25 species found nowhere else in the world. Thirteen species are endangered or threatened and most depend on the isolated springs and wetlands found here. This concentration of native species is considered to be the greatest of any local area in the United States. Ash Meadows refuge is a unit of the Desert Refuge Complex.