Sirens went off and people were asked to leave low-lying areas and areas near the creek.
Boulder County Emergency Management says the creek was expected to rise about 1,800 cubic-feet-per-second which would have created flooding in low-lying areas.
After 9 p.m., Boulder spokesperson Kim Kobel says the 4-foot surge did not cause flash flooding and the all clear was announced for the City of Boulder. Emergency call-backs went out notifying the community of the all clear.
There is still a Flash Flood Warning in Boulder County near the Fourmile Canyon Fire burn area until 11 p.m. It's estimated about an inch and a half of rain fell in that area.
Water and debris have made travel difficult in the Lee Hill area in north Boulder and in Fourmile Canyon.
The National Weather Service says this was a life-threatening situation.
The communities facing flooding were Gold Hill, Cirsman, Salina, Summerville and Sunshine.
Fourmile Creek and Fourmile Canyon Creek were also in danger of flooding.
Boulder authorities warned living in Married-Student Housing around 17th and Arapahoe Streets to be aware of flooding.
Eben G. Fine Park was evacuated and flooding was reported in Fourmile Canyon. Several roads are closed in the area and drivers are urged to watch out for high water and any mudslides.
Boulder Emergency Management opened a call center for the situation. Call 303-413-7730 with any questions related to the emergency information.
An evacuation center was established at the YMCA in Boulder at 28th Street and Mapleton. It is for any residents were displaced due to road closures.
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