Eight Dead in Colorado Floods
John Hoffenberg watches the flow of water increase in Boulder, Colorado, Sept. 15, 2013.
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)
An aerial view of vehicles submerged in flood waters along the South Platte River near Greenley, Colorado, Sept. 14, 2013.
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)
Will Pitner is rescued by emergency workers and neighbor Jeff Writer after a night trapped outside on high ground above his home as it filled with water after days of record rain and flooding at the base of Boulder Canyon, Colorado, Sept. 13, 2013.
Boulder Creek flows at high speed next to a road closed off by debris from days of rain and flooding, at the base of Boulder Canyon, Colorado, Sept. 13, 2013.
Nick Carter shovels debris as heavy rains cause severe flooding in Boulder, Colorado, Sept. 12, 2013.
A home and car are stranded after a flash flood in Coal Creek destroyed the bridge near Golden, Colorado, Sept. 12, 2013.
A section of Highway 72 is missing after a flash flood tore through Coal Creek near Golden, Colorado, Sept. 12, 2013.
Matthew Messner looks for a way to cross the sidewalk covered by heavy rains in Boulder, Colorado, Sept. 12, 2013.
Colorado Flooding Causes Evacuations, Deaths
At least eight people have died as a result of massive floods engulfing parts of the western U.S. state of Colorado.
State officials say another 600 people remain unaccounted for.
Bolstered by clear skies and receding waters, rescue efforts continued Tuesday with local, state and federal responders attempting to reach people stranded by the rising water. Twenty helicopters scoured the area dropping supplies and providing airlifts to those in need of help.
Authorities says at least 1,600 homes were destroyed and more than 17,000 others have been damaged.
Local news outlets say more than 50 bridges linking rural communities have been destroyed or damaged, along with hundreds of miles of roads.
President Barack Obama has declared Colorado a major disaster zone and ordered federal help to boost state and local recovery efforts.