Prepare for Flooding

En español 


  1. In addition to the preparedness page, fill Sandbags to protect your property at the City fill in station. 
    • 110 Higgins Canyon Road Half Moon Bay CA 94019 . 
  2. Often the best option is to shelter in place at home and to stay off the roads until the situation is safe. 
  3. Keep storm drains in your neighborhood clear to prevent backups. 
    • Call Half Moon Bay Public Works Maintenance at 650.726.7177 for significant blocking. 
    • After 5pm, call the Sheriff's dispatch at 650.726.8286.
  4. Consider flood insurance if you are in the flood zone - View FEMA's Flood Insurance Rate Maps
    • Regular homeowner's insurance policies usually don't cover flood damage.
  5. Monitor weather updates.


  1. Make sure your family and pets are safe - if there is time, move valuable household possessions off the floor.
  2. Be ready to evacuate if directed by emergency personnel.
  3. Avoid flood waters: Six inches of water will reach the bottom of most passenger cars. 
  4. Disable utilities - If your property is in imminent danger of flooding, you may need to shut off your gas and electricity for safety. 
    • Visit PG&E online for information about how to do this. 
    • If you smell natural gas, see downed power lines, or suspect another power-related emergency situation, call 9-1-1 and then call PG&E at 1-800-743-5000. 
    • Do not touch any electrical equipment unless it is in a dry area and you are standing on a piece of dry wood while wearing rubber gloves and rubber soled boots or shoes.
  5. Downed trees 
    • Call the Sheriff’s non-emergency dispatch line at 650-363-4911. 
    • Any life threatening issues should be reported to 9-1-1.