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Colorado Flood

Four year old Elijah Obrien looks at his muddy basement which was damaged when recent floods swept through Longmont, Colo., Wednesday Sept. 18, 2013. As water recedes and flows east onto the Colorado plains, rescuers are shifting their focus from emergency airlifts to trying to find the hundreds of people still unaccounted for after last week's devastating flooding. (AP Photo/Brennan Linsley)

Flash floods in Colorado

More than 11,000 people are displaced in Colorado because

of the floods, and about 11,750 are under mandatory evacuation orders.

The largest airlift rescue operation since Hurricane Katrina has helped

evacuate more than 1,700 people from isolated areas. (CSM)