FLOOD

Inland flooding, specific to Houston’s inland location, happens when excessive rain causes rivers and streams to overflow. In Houston, intense, short-duration rainfall from storms frequently causes significant flooding. Floods can occur at any time of the year.

2024 HURRICANE EVACUATION ZONE MAP

If it becomes necessary to evacuate residents during a hurricane, authorities will issue evacuation orders by zip code zone or “zone.” Coastal residents should become familiar with which zone they reside in.

Knowing your zone will help you better understand when and if you need to evacuate during a hurricane or other serious storm. You should only evacuate if you live in a storm surge evacuation zone or are ordered by elected and emergency officials to evacuate. Check more information on this map here.

FLOOD PREPAREDNESS TIPS:

  • Listen to local officials and register for AlertHouston to stay informed.
  • Have emergency supplies in place at home, at work, and in the car (blankets, water, extra clothing, first-aid kit, extra cell-phone charger, etc.) Visit our Preparedness Page for a full list of supplies for an emergency kit.
  • Visit the Houston TranStar Map to check for flooded roads. Do NOT travel when there are significant flooded areas on the roads.
  • Do not walk, swim or drive through flood waters.
  • Turn Around, Don’t Drown! – Remember, just six inches of moving water can knock you down, and one foot of moving water can sweep your vehicle away.
  • Check the Harris County Flood Warning System for rainfall amounts and water levels in bayous and major streams in real-time.
  • Familiarize yourself with your watershed and what your home’s flood threat is with the Harris County Flood Control District
  • Stay off bridges over fast-moving water.
  • Make a Plan for your household, including your pets, so that you and your family know what to do, where to go, and what you will need to protect yourselves from flooding.
  • Learn and practice evacuation routes, shelter plans, and flash flood response.
  • Establish a primary and secondary meeting point in case of evacuation.
  • Keep important documents in a waterproof container.
  • Protect your property. Move valuables to higher levels. Declutter drains and gutters. Install check valves. Consider a sump pump with a battery.

FLOOD PREPARATION FOR PEOPLE WITH DISABILITIES:

  • For emergency preparedness in ASL, visit the Disaster Resilience link or watch this FEMA video.
  • Create a Personal Emergency Plan: Work with family or caregivers to develop a customized evacuation and communication plan.
  • Prepare an Emergency Kit: Include essential medications, medical devices, allergy tags, and batteries (e.g., hearing aids, oxygen tanks, mobility aids).
  • Modify the Home for Accessibility: Ensure that the home is safe and accessible for individuals with mobility impairments, including clear, easily navigable escape routes. Elevate or waterproof critical equipment like power chairs, scooters, and medical devices.
  • Stay Informed: Use accessible communication channels (e.g., text alerts, visual alarms, or audio alerts) based on individual needs. Stay informed through weather apps or community emergency systems that cater to accessibility needs.
  • Coordinate with Local Authorities and Services: Register for STEAR
  • Practice Evacuation Drills: Include the use of necessary equipment (e.g., wheelchairs, walkers) in practice drills.
  • Consider Transportation Needs: Arrange transportation options ahead of time if needed (e.g., METRO Lift, 311, or a friend/family member).
  • Ensure that transportation vehicles are equipped for the specific needs (e.g., space for wheelchairs or oxygen).
  • Prepare for Power Outages: Have a battery-powered backup system for essential medical equipment (e.g., CPAP machines, oxygen concentrators).
  • Create a Support Network: Keep a list of emergency contacts accessible, including caregivers, neighbors, and local disaster relief organizations.

Visit HoustonOEM.org/Prepare for more preparedness information. For Flood Outlook, Watch, Warning and Advisory Criteria, visit the National Weather Service.

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