Lake Mead is the largest reservoir in the United States.. It is 24 miles from Las Vegas Nevada and extends into Arizona It was created by Hoover Dam and supplies water to that desert region. Lake Mead is 112
miles long when the lake is full, has 550 miles of shoreline,
is around 500 feet at greatest depth, has 247 square miles of surface, and when filled to capacity, 28 million acre-feet of water. However,
the lake has not reached this capacity in more than decade, due to increasing
droughts.
Lake Mead draws a majority of its water from snow melt in the Colorado, Wyoming,
and Utah Rocky Mountains. Since 2000 the water level has been dropping at a
fairly steady rate due to less than average snowfall. Marinas and
boat launch ramps have been moved to another part of the lake or
have closed down completely. It irrigates about a million acres of farmland in the United States, much of it
in southern California’s Imperial Valley, and another half million acres in
northern Mexico as part of international water agreements. The water released
through the dam can be used to generate electricity for about 500,000 homes and
to lift water up over the Sierra Nevada Mountains to irrigate southern
California, but power generation is secondary to agricultural and municipal
water demands in places like southern California, central Arizona, and southern
Nevada.
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