Raging flood waters are submerging Boulder, Colorado, and surrounding areas, where rescue operations are underway.
Colorado Flooding Causes Evacuations, Deaths

1
John Hoffenberg watches the flow of water increase in Boulder, Colorado, Sept. 15, 2013.

2
An aerial photo of a flood-affected area of northern Colorado along the Big Thompson River, Sept. 14, 2013. (U.S. Air National Guard Handout photo)

3
An aerial view of vehicles submerged in flood waters along the South Platte River near Greenley, Colorado, Sept. 14, 2013.

4
Children board a rescue helicopter flown by the U.S. Air National Guard after severe flooding shut down major roads leading out of Jamestown, Colorado, Sept. 14, 2013. (U.S. Air National Guard Handout photo)