Who is Powell, John Wesley (1834–1902) American Geologist

Explorer John Wesley Powell is probably most famous for

his early explorations and geological descriptions of the

Grand Canyon and Colorado River in 1869. Powell led a

group of 10 men on four rowboats down the Colorado, and

his geological observations led to the understanding that the

canyon was formed by the river gradually cutting down

through the rocks of the region as the plateau was slowly

uplifted. Between 1874 and 1879, Powell was the director of

the U.S. Geological and Geographical Survey of the Territories,

and he led explorations into the Rocky Mountains of the

southwestern regions. During these field excursions Powell

became convinced of the limits on development posed by the

paucity of water in the desert southwest, and he completed

many surveys of the region’s water resources. In 1881 Powell

became director of the U.S. Geological Survey, but he resigned

in 1894 to pursue studies of the native peoples of the land.

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