BOULDER - The city of Boulder closed down a number of city and county offices Tuesday so employees could take part in a major flood exercise.
The drill began at 10:30 a.m. and ended a few hours later.
Emergency crews acted out a scenario that emulated the Big Thompson Flood, which happened not too far west of Loveland.
The flood killed 145 people and caused more than $40 million in damages.
Authorities say, the Big Thompson Flood was a rare occurrence but if it were to happen again, crews will be prepared to handle the situation.
During that historic flood, 11 inches of rain fell in just a few hours.
In Tuesday's drill, people pretended that Boulder Creek was flooding, with two to four feet of water flooding downtown Boulder.
During the drill, first-responders acted as if thousands of people had to be evacuated, they pretended the phone service was down and hospitals were unable to accept patients because of their location to the flood.
Crews acted as though over 6 feet of water was moving down Boulder Canyon with vehicles and buildings swept away and chemicals released into the flood waters.
The enactment was done so emergency crews and the community would be prepared if something similar to the Big Thompson Flood were to take place, again.