Clark County is a county located in the U.S. state of Nevada. As of the 2020 census, the population was 2,265,461. Most of the county population resides in the Las Vegas Census County Divisions, which has 2,196,623 people as of the 2020 Census, across 435 square miles (1,130 km2). It is by far the most populous county in Nevada, and the 11th-most populous county in the United States. It covers 7% of the state's land area but holds 73% of the state's population, making Nevada the most centralized state in the United States.
San Bernardino County, officially the County of San Bernardino, is a county located in the southern portion of the U.S. state of California, and is located within the Inland Empire area. As of the 2020 U.S. Census, the population was 2,181,654, making it the fifth-most populous county in California and the 14th-most populous in the United States. The county seat is San Bernardino.
Mohave County is in the northwestern corner of the U.S. state of Arizona. As of the 2020 census, its population was 213,267. The county seat is Kingman, and the largest city is Lake Havasu City. It is the fifth largest county in the United States.
Yavapai County is near the center of the U.S. state of Arizona. As of the 2020 census, its population was 236,209, making it the fourth-most populous county in Arizona. The county seat is Prescott.
The Mojave River is an intermittent river in the eastern San Bernardino Mountains and the Mojave Desert in San Bernardino County, California, United States. Most of its flow is underground, while its surface channels remain dry most of the time, except for the headwaters and several bedrock gorges in the lower reaches.
Lake Mead National Recreation Area is a U.S. national recreation area in southeastern Nevada and northwestern Arizona. Operated by the National Park Service, Lake Mead NRA follows the Colorado River corridor from the westernmost boundary of Grand Canyon National Park to just north of the cities of Laughlin, Nevada and Bullhead City, Arizona. It includes all of the eponymous Lake Mead as well as the smaller Lake Mohave – reservoirs on the river created by Hoover Dam and Davis Dam, respectively – and the surrounding desert terrain and wilderness.
The Dead Mountains are a mountain range in the southeastern Mojave Desert, in San Bernardino County, California. The range borders the tri-state intersection of Nevada, Arizona and California, and the Mohave Valley, with the Fort Mojave Indian Reservation bordering the range foothills on the east and northeast, in the three states.
The El Paso Mountains Wilderness was created in 1994 and now has a total of 23,780 acres (96.2 km2). All of the wilderness is in the northern Mojave Desert in eastern Kern County, California and is managed by the Bureau of Land Management. It is located south of Ridgecrest, California.
The Hualapai Mountains are a mountain range located in Mohave County, east of Kingman, Arizona. Rising up to 8,417 feet at its highest peak, the higher elevations of the Hualapai Mountains support Madrean Sky Island habitats, and are host to a plethora of unique flora and fauna in a wide range of microclimates, high above the surrounding Mojave Desert.
The Sheep Hole Mountains are a mountain range in the Mojave Desert, to the north of Joshua Tree National Park, in San Bernardino County, California. The mountains were once Chemehuevi hunting grounds.
The Darwin Falls Wilderness is a protected area in the northern Mojave Desert adjacent to Death Valley National Park. The 8,189-acre (3,314 ha) wilderness area was created by the California Desert Protection Act of 1994 and is managed by the Bureau of Land Management as part of the National Wilderness Preservation System.
The 112,400-acre (45,500 ha) Warm Springs Wilderness makes up the entirety of the Black Mesa and parts of the surrounding foothills, washes, alluvial fans, and valleys. The Black Mesa is the southernmost section of the Black Mountains of western Mohave County, in northwest Arizona. The region is in the east and southeast of the Mojave Desert of Arizona, southern Nevada, and California.
Bright Star Wilderness is a 8,190-acre (3,314 ha) wilderness area in Kern County in the U.S. state of California.
The Sacatar Trail Wilderness is a federally designated wilderness area located 20 miles (32 km) northwest of Ridgecrest, California USA. It was created in 1994 with the passage of the California Desert Protection Act - Public Law 103-433 - and is managed by the Bureau of Land Management (BLM). The wilderness is 51,900 acres (210 km2) in size and protects portions of the southern Sierra Nevada Mountain Range.
The Piper Mountain Wilderness is a federally designated wilderness area located in the White Mountains 20 miles (32 km) northeast of Big Pine, California in Inyo County, California.
The Sylvania Mountains Wilderness is a federally designated wilderness area located 30 miles (48 km) east of Bishop in the state of California. The wilderness is 18,677acres in size and is managed by the Bureau of Land Management (BLM). The California Desert Protection Act of 1994 created the Sylvania Mountains Wilderness and was added to the National Wilderness Preservation System. The wilderness is bordered by Nevada stateline on the east, Piper Mountain Wilderness on the west and Death Valley National Park to the south.
The Chimney Peak Wilderness is a 13,134-acre (53.15 km2) wilderness area located 20 miles (32 km) northwest of Ridgecrest, in southeastern Tulare County, California.
Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, the population was 2,418,185, making it the fourth-most populous county in California and the 10th-most populous in the United States. The name was derived from the city of Riverside, which is the county seat.
The Clipper Mountain Wilderness is a wilderness area in the Clipper Mountains of the eastern Mojave Desert and within Mojave Trails National Monument, located in northeastern San Bernardino County, California. It is under the jurisdiction of the Bureau of Land Management.
Golden Valley Wilderness is a wilderness area located in San Bernardino County, California, near Ridgecrest. It covers 37,786 acres of the Mojave Desert, straddling both the Almond Mountains to the southeast and the Lava Mountains to the northwest in the Golden Valley. Steep canyons of sedimentary rocks line the valley walls, rising as much as 5,000 feet on Dome Mountain. In terms of wildlife, creosote bush scrub dominate the vegetation, while Joshua trees and wildflowers grow intermittently. The area also provides habitat for raptors, Mojave ground squirrels, and desert tortoises.
