KUSA - Authorities said Friday afternoon that 172 people are still unaccounted for after catastrophic flooding in Boulder County.
Boulder County authorities say those unaccounted for are not considered missing but have not contacted friends or family.
Officials have also raised the death toll from this week's flooding in Colorado to four after a woman's body was found in Boulder.
Boulder County Sheriff Joe Pelle says the body found Friday was that of a woman who was swept away Thursday after the vehicle she was riding in got stuck in water north of Boulder.
She was not identified.
A man in the same vehicle died after he got out trying to help her.
A third person died Thursday when a structure in Jamestown collapsed. To the south, Colorado Springs officers found a man's body in Fountain Creek. The man was identified as 54-year-old Danny Davis.
Boulder Sheriff Joe Pelle says that there may be more victims of the floods.
(KUSA-TV © 2013 Multimedia Holdings Corporation with The Associated Press)