Floods in the US state of Colorado have claimed at least four lives and more than 170 people remain unaccounted for.
During a break in the torrential rain, emergency workers managed to reach hundreds of stranded residents in engulfed towns across Boulder County, such as Lyons and Jamestown.
Boulder County resident John Martinko described the deluge:
“Never seen it coming across like this, so it’s pretty incredible. Amazing more people haven’t been hurt.”
More than 38 centimetres of rain,nearly half the region’s annual average, has fallen in a single week, according to the National Weather Service.