US flood rescuers step up efforts
The rescue of hundreds of people stranded by epic mountain flooding in Colorado has been stepped up as food and water supplies run low.
Meanwhile thousands more were driven from their homes on the plains as debris-filled rivers became muddy seas inundating towns and farms miles from the Rockies.
For the first time since the harrowing mountain floods began on Wednesday, Colorado had its first broad view of the devastation - and the reality of what is becoming a long-term disaster is setting in. The flooding has affected parts of a 4,500-square-mile area.
National Guard choppers are evacuating 295 people - plus pets - from the mountain hamlet of Jamestown, which was isolated by flooding that scoured the canyon the town sits in.
Mike Smith, incident commander at Boulder Municipal Airport, said helicopters would continue flying in and out late into the night.
The outlook for anyone who would rather stay is weeks without power, mobile phone service, water or sewers.
For those awaiting an airlift, National Guardsmen dropped food, water and other supplies in Jamestown and other small towns in the winding, narrow canyons that dot the Rocky Mountain foothills.
Thousands of evacuees sought shelter in cities that were nearly surrounded by raging rivers spilling over their banks.
The days-long rush of water from higher ground has killed four people and turned towns on Colorado's expansive eastern plains into muddy swamps. Crews used inflatable boats to rescue families and pets from stranded farmhouses. Some evacuees on horseback had to be escorted to safe ground.
Boulder County officials said the number of people unaccounted for had risen to 172. The officials said earlier that the unaccounted for figure did not necessarily represent missing people.