Boulder Guide To Flooding

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  • Be Aware, Be Vigilant, Be Safe
  • How to Prepare for Floods
  • Flood Watches and Warnings
  • What to do During a Flood
  • Flood Management Projects and Programs
  • Additional Links and Resources
  • Flood Safety & Personal Preparedness
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Boulder Flooding Information

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.

Floodplain Information Map

City of Boulder Floodplain Information Map

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.

Floodplain Information Map

Be Aware, Be Vigilant, Be Safe

Sign Up for Free Emergency Alerts

How to Prepare for Floods

Emergency Alerts

  • Sign up for FREE emergency alerts at BoCo911Alert.com. You can get alerts via home, work, and cell phones, text messages and email. When a flood watch or warning is issued for your area, find more information by tuning to local news and visiting www.boulderodm.gov.

Emergency Kit

  • Prepare an emergency kit.

Flood Insurance

Don't delay purchasing flood insurance to protect your property. There may be a 30-day waiting period before your new policy becomes active.

  • Purchase flood insurance to protect your property.

Discharging Groundwater

  • Learn what you need to know to be safe, resilient and protect your property

FEMA FloodSmart

  • Be Flood Smart www.FloodSmart.gov

Protect Natural Floodplain Functions

If you plan on doing any work on your property you may need a floodplain/wetland permit.

  • The city has adopted regulations for development within streams, wetlands, and water bodies to help preserve and protect these natural resources.

Flood Watches and Warnings

  • The Office of Disaster Management tests the city's emergency warning system on the first Monday of each month from April through September.
  • Sirens are tested at 10 a.m. and 7 p.m.
  • The sirens are intended as a resource for community members outdoors during an emergency event who may not have easy access to alert notifications.
  • They are not intended to be heard indoors.
Flash Flood Watch Flash Flood Warning

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.

What to do During a Flood

Do

  • Disconnect electricity and gas.

Do not

  • Do NOT walk or drive through flood waters.
  • Do NOT take shelter in underpasses, as they are among the first areas to flood. Underpasses are part of how we aim to decrease the impacts of floods

Higher ground

  • Get to higher ground.
  • Plan an evacuation route that does not require you to cross creeks or ditches.

Emergency orders

  • Follow emergency response orders.

Flood Management Projects and Programs

  • Water Supply and Planning
  • Flood Management Program
  • Multi-Hazard Mitigation Plan
  • Flood & Stormwater Comprehensive Plan
  • Stormwater Quality Program
  • Green Infrastructure Stormwater Management
  • Floodplain Development Permits
  • Wetland Permits
  • Greenways Program

Additional Links and Resources

  • Maps of Floodplains
  • Flood Insurance Information
  • The Creeks of Boulder
  • Boulder Creek Surface Water Levels
  • September 2013 Flood
  • Boulder County Creek Recovery and Restoration Program
  • Wetland and Stream Basics
  • Wetland Tips for Homeowners

Flood Safety & Personal Preparedness

  • Emergency Preparedness Guide
  • Emergency Supply Checklist

Contact

Email

[email protected]

Address

United States

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