• Sunset at Lake Mead's Boulder Basin

    Lake Mead

    National Recreation Area AZ,NV

There are park alerts in effect.
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    The Nevada Department of Transportation reopened a northbound and southbound lane of Interstate 15 Sept. 12; therefore, Lake Mead National Recreation Area entrance fees will resume Sept. 14. More »

  • Important Notice to Mariners

    Lake Mead water elevations will be declining throughout the summer. Before launching, check lake levels, launch ramp conditions, changes to Aids to Navigation and weather conditions by clicking on More »

  • Areas of Park Impacted by Storm Damage

    Strong storms rolled through Lake Mead National Recreation Area Aug. 3-4, causing damage to some areas of the park. Crews are working to restore the below locations. Debris may be present in other areas of the park, as well, especially in the backcountry. More »


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Andrew Cattoir
From Desert Bighorn Sheep to bats, Lake Mead National Recreation Area is home to a diverse range of mammals. Since many mammals are weary of humans it is often a treat just to see them while hiking, boating, or on a scenic drive.

Desert Bighorn Sheep

Desert bighorn sheep are some of the most intriguing mammals of Lake Mead NRA. They are wary of human contact, and blend so well into the terrain they inhabit, that sightings are a special event.

Once feared of becoming extinct, the desert bighorn sheep are making a tentative comeback in the southwest due to a comprehensive reintroduction effort by the National Park Service.

For more information about desert bighorn sheep visit our Atlas of Lake Mead NRA Desert Bighorn Sheep page.

Mountain Lion

The mountain lion is North America's largest member of the cat family. These majestic creatures once roamed throughout North America, but today, their range is limited to British Columbia and Alberta, Canada, the twelve westernmost states in the U.S., and Florida.

For more information about Mountain Lions visit our Atlas of Lake Mead NRA Mountain Lion page.


At least 19 species of bats have been found within Lake Mead NRA. Although widely known to live in caves, many species within the park also inhabit man-made environments, such as abandoned mines or tunnels.

For more information about Bats visit our Atlas of Lake Mead NRA Bats of Lake Mead page.

Other Mammals

Other mammals roam the park, some in daylight, others are nocturnal. Keep an eye out for beavers, coyotes, and rabbits. You never know what you are going to see at Lake Mead NRA.

Did You Know?

Down River view of Hoover Dam

Hoover Dam, the world's largest hydroelectric installation at the time of its construction, presented massive challenges to its designers and builders, yet the project was completed in less than five years! Hoover Dam backed up the waters of the Colorado River to create Lake Mead.