• Sunset at Lake Mead's Boulder Basin

    Lake Mead

    National Recreation Area AZ,NV

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  • 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 »

  • Goldstrike Canyon, Arizona Hot Spring Trails Temporarily Closed

    A temporary emergency closure is in place for Goldstrike Canyon and Arizona Hot Spring trails within Lake Mead National Recreation Area, beginning Aug. 1. This closure includes National Park Service and Bureau of Reclamation lands. More »

  • Summer Fire Rules in Effect

    Lake Mead NRA is now enforcing summer fire restrictions. Please click 'more' to learn about the rules for fire during our hot, dry season. More »

Bats of Lake Mead

Various species

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. Most species of bats either hibernate in winter or migrate to warmer climates; however, the California leaf-nosed bat roosts in warmer caves or mines and is active all year. Bats feed at night and usually over open water, such as lakes, ponds or spring pools. Locally, diets consist entirely of arthropods, such as moths, mosquitoes, crickets, ants, beetles, and even scorpions.

Fast Facts


Status and Threats


None of the bat species found at Lake Mead NRA are federally listed as threatened or endangered. However, ten species are listed as species of concern. Current local threats include water developments, which may reduce spring flows and limit habitat, and disturbance of hibernating colonies by recreational activities. Emerging threats include proposed wind developments and White-Nose Syndrome (WNS). Wind farms are known to cause high rates of mortality among certain bat species, and the three species experiencing the highest rates of mortality are found at Lake Mead. WNS is a fungal infection first seen in New York in 2006 that is progressing west. WNS often kills up to 90 percent of colonies, and at least two species of bat found in the park are known to be susceptible. Since bats bear only one pup each year, there is potential for the disease to have devastating impacts.


Protecting the Bat's Environment


Photo Gallery




Bat Conservation International

Bats of the United States.
Harvey, Michael J., J. Scott Atlenbach, and Troy L. Best. Arkansas Game and Fish Commission, 1999.

Southwest Regional Gap Analysis Project

U.S. Fish and Wildlife Service Endandered Species Program

U.S. Fish and Wildlife Service: Information on White-Nose Syndrome

U.S. Geological Survey: Information on Effects of Windmills on Bats

Western Bat Working Group

Threat Level provided by the International Union for Conservation of Nature's (IUCN) Red List. http://www.iucnredlist.org/

Did You Know?

Mohave Yucca

All yucca species have evolved a special relationship with yucca moths. Each species of the plant has its own corresponding species of pollinating moths.