10 tidbits about the Colorado River

It supports seven national wildlife refuges, four national recreation areas and 11 national parks.

>> A state flag of Arizona, an American flag and a state flag of Nevada are hung over the side of the Mike O'Callaghan-Pat Tillman Memorial Bridge part of the Hoover Dam Bypass Project during a dedication ceremony October 14, 2010 in the Lake Mead National Recreation Area, Nevada.