There is a Chevelon Canyon and Chevelon Lake in Arizona. It is a hiking destination.
A canyon is formed by a river. The river rises to the highest point and starts to carve. Then from there the water level goes down... And there's your canyon:-p
A canyon is a deep valley between cliffs often carved from the landscape by a river. Grand Canyon, Arizona
You should be able to locate the Grand Canyon if you are near Flagstaff.
Grand Canyon got its name because it is one of the biggest canyons in the world.