Holiday Closure
All City of Boulder administrative facilities, public libraries and Age Well Centers will be closed Monday, May 29, for the Memorial Day holiday. Some facilities and services will be open.
The city of Boulder rests at the base of the Rocky Mountain Foothills and is home to Boulder Creek, its 14 tributaries and Boulder Slough (diverted water from Boulder Creek to satisfy irrigation company water rights). Due to its geographic location and features, the city of Boulder has the highest risk of flash flooding in the state of Colorado.
Many neighborhoods throughout the city experience flooding during storms, and some are at a higher risk to extreme flooding because they are located near a major drainageway. The City of Boulder encourages all community members to be aware of their flood risk and to take the necessary precautions to help protect life and property.
The map shows floodplains, conveyance zones, critical facilities, elevation certificates and FEMA flood information.
To find out if you are in a floodplain, search the map by clicking the magnifying glass icon to enter your property address.
Don't delay purchasing flood insurance to protect your property. There may be a 30-day waiting period before your new policy becomes active.
If you plan on doing any work on your property you may need a floodplain/wetland permit.
Flash Flood Watch | Flash Flood Warning |
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Weather conditions may cause flash flooding in the specified area. Be ready to move to higher ground during heavy rainfall. |
Flash flooding is occurring or is imminent in the specified area. Move to higher ground immediately. In some locations and situations, it may be safest to shelter in place on the upper floor of the building. |