Las Vegas is situated within Clark County in a basin on the floor of the Mojave Desert and is surrounded by mountain ranges on all sides. Much of the landscape is rocky and arid with desert vegetation and wildlife. It can be subjected to torrential flash floods, although much has been done to mitigate the effects of flash floods through improved drainage systems.
The peaks surrounding Las Vegas reach elevations of over 10,000 feet (3,000 m), and act as barriers to the strong flow of moisture from the surrounding area. The elevation is approximately 2,030 ft (620 m) above sea level. According to the United States Census Bureau, the city has a total area of 135.86 sq mi (351.9 km2), of which 135.81 sq mi (351.7 km2) is land and 0.05 sq mi (0.13 km2) (0.03%) is water.