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  • Floodplain Map
  • Creeks of Boulder
  • Floodplain Development
  • Be Prepared
  • Community Resilience

Boulder Flood Info

* Please note, this page and all the pages linked through this page are in the process of being updated. If you are unable to locate specific information, please contact Laurel Olsen or call 303.441.3203. Thank you for your patience. 


Flood Information 

The City of Boulder rests at the base of the Foothills of the Rocky Mountains and is home to Boulder Creek, its 14 tributaries and Boulder Slough (diverted water from Boulder Creek to fulfill irrigation company water rights). Due to our geographical location, the City of Boulder has the highest risk of flash flooding in the state of Colorado. Many neighborhoods throughout the city experience flooding during storm events, and some are at a higher risk to more extreme flooding due to their proximity to a major drainageway. 

The city encourages all residents to be aware of their flood risk and take necessary precautions to help protect life and property. 

To learn more about the City of Boulder's flood management projects and programs click on the buttons above:

  • What is my Flood Risk? - Interactive floodplain map
  • Creeks of Boulder - View flood management projects, mapping updates, and mitigation plans for idividual creeks
  • Floodplain Development - Everything you need to know if you plan to build in a floodplain
  • Be Prepared - Learn about what to do before, during and after a flood event
  • Community Resiliance - See what the City of Boulder is doing to be a more resilient community

Stay Connected

Questions? Request Flood Information

Sign up for free emergency alerts at BoCo911Alert.com.


Additional Links and Resources

Flood Mitigation   Boulders Greenways   September 2013 Flood