© CNN Dave Jackson closes a mailbox with his foot after delivering the mail to a home surrounded by water from the flooded Cheyenne Creek in Colorado Springs, Colorado, on Friday, September 13.
Boulder, Colorado -- As furious waters flow through flood-devastated northern Colorado, fears and tales of devastation grow.
At least four people have been killed and 218 are unaccounted for, officials say.
The nightmare is far from over as the state awaits more rainfall Saturday, threatening to send swollen rivers gushing through streets choked with debris. The rain is expected to come down heavy Sunday.
It will not be as much as the 15 inches dumped in some spots this week, but it could cause more flooding in areas where water has already receded, forecasters warned.
Emergency management officials on Saturday were trying to reach those who are missing to ensure they are not in danger. The number of missing is expected to decrease as the effort moves forward.
Residents got some relief Friday when rains subsided, giving a clear view of towns turned into abrupt lakes, homes and businesses inundated with muddy water and bridges devoured by raging creeks. Homes dangled off cliffs.
In Larimer County, there were 46 medical rescues on Friday, and teams continued looking for those unaccounted for on Saturday.
"We hope the worst has passed," John Schulz of the Larimer County Sheriff's Office said. "The water levels are receding, and it was a quiet night overall. We are expecting more rain tomorrow, but with the levels receding today we hope tomorrow is better."
Hundreds of residents were evacuated Friday, including 162 people transported by air from Jamestown because roads to the city were impassible, Boulder County EMS spokesman Ben Pennymon said.
Rescuers have retrieved the bodies of the four who died in the waters. Many more people are cut off by devastated roadways, and authorities don't know how long it will take to reach them.
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Gov. John Hickenlooper warned an extensive recovery is ahead for the affected area from the state's center into the northeast.
"This is not going to get fixed in a week," he said. "We have lost a great deal of infrastructure."