The United States Congress designated the Jimbilnan Wilderness (map
) in 2002 and it now has a total of 18,879 acres
All of this wilderness is located in Nevada
and is managed by the National Park Service.
The Jimbilnan Wilderness is bordered by
the Pinto Valley Wilderness
to the west.
The Jimbilnan Wilderness contains mountainous terrain representing the northeast extremities of the Black Mountains. They contrast directly with the flat surface of the waters of Lake Mead in the distance and reach up to 3,025 feet. Deep canyons and washes that cut across the mountains and flow southeast into the Overton Arm of Lake Mead. South of the Black Mountains, an extensive area of white gypsum mudhills slopes south towards the Virgin Basin section of Lake Mead. Closer to the lake, the land is defined by thick layers of alluvial outwash.
The colorful sand dunes in this area are known habitat for two rare plants, the Beaver Dam milkvetch and the sticky buckwheat. Vegetation primarily consists of typical Mojave Desert Scrub species. The flats and bajadas are dominated by Creosote Bush, White Bursage, Fremont's Dalia (Indigo Bush), Mojave Yucca, a few Beavertail Pricklypear Cactus, and many other low-growing desert shrubs. The mountain slopes include species such as Creosote Bush, White Bursage, Nevada Jointfir, Schott's pygmycedar, Desert Stingbush, Sweetbush, Goldenhills (brittlebush), and Barrel Cactus.
Wildlife in the Jimbilnan typically includes Desert Bighorn, Black-tailed Jackrabbits, Coyotes, white-tailed antelope squirrels, and side-blotched and Zebratail lizards. Wild horses, who seem to have invaded the area, are also present. If you turn your gaze upwards, you may spot a variety of bird species including Red-tailed Hawk, Common Raven, Black-tailed Gnatcatcher, House Finch, Black-throated Sparrow, White-crowned Sparrow, Say's Phoebe, Canyon Wren, and Bald Eagle. Down by the lake you can find species such as American Coots, Double-crested Cormorants, and various ducks and grebes. Striped Bass and Carp are common in the lake.