Supervisor Rowe’s editorial was originally published in the Redlands Community News on December 13, 2024.
As winter approaches, residents and businesses downslope of the Bridge Fire and Line Fire burn areas, including those in the San Bernardino Mountain communities and the city of Highland, should prepare for increased flooding risks due to wildfire damage.
Under normal conditions, trees and vegetation help absorb rainfall. Wildfires, however, “bake” the soil, making it hydrophobic and causing excessive runoff for up to five years until the vegetation regrows. Even moderate rainfall in burn areas can result in flash flooding, mud flows and debris flows that endanger lives and property.
Debris flows, which can carry boulders, trees and vehicles, often exceed speeds of 20 mph and can be highly destructive. The tragic floods that occurred after the 2003 Old Fire claimed 16 lives, underscoring the severe risks of these events.
I urge residents and businesses in the affected areas to prepare, so you can protect your families and homes and reduce the risk of post-fire flooding hazards this season.
Property owners can check with their insurance carriers to find the best coverage for floods, mudslides and debris flows. Information is also available from the National Flood Insurance Program Call Center at 877-336- 2627 or by visiting floodsmart.gov to learn more about flood risk and flood insurance.
Know the risks of flash floods and debris flow
- Heed evacuation warnings and orders: Evacuate immediately if instructed, as debris flows and flash floods can occur with little warning. Set up a communication plan with family members to confirm safety and locations if you’re separated.
- “Turn Around, Don’t Drown”: Never attempt to cross a flooded road, which can be deceivingly deep and powerful enough to carry a vehicle away.
Monitor weather conditions
Stay informed by checking the National Weather Service’s San Diego office’s updates.
Make a family plan
Flooding can escalate quickly, so plan ahead for:
- Evacuation routes: Know the safest routes to high ground.
- Meeting locations: Identify a meeting spot near your home and another farther away in case your family is separated.
- Emergency contacts: Designate a friend or relative outside the area as a contact and ensure each family member has a copy.
- Supplies: Pack a disaster kit with essentials like water, food, flashlights, medications and sturdy shoes.
Know what to do during a flood
- If a flood warning is issued or you are ordered to evacuate: Stay inside if you are in a building or seek shelter and higher ground if you are outside. Avoid floodwaters at all costs.
- Do not walk or drive through moving water; As little as six inches can sweep you off your feet.
Home and property preparation
- Elevate utilities: Elevate and secure items like water heaters, HVAC systems and fuel tanks to reduce flood damage.
- Clear debris flow pathways: Avoid placing landscaping or structures in natural drainage channels.
- Flood-proof your home: Use the San Bernardino County Public Works’ Homeowners’ Guide-Flood, Debris, Erosion Control for strategies on protecting your property.
Protect your property with sandbags
Properly placed sandbags can redirect water and debris away from your home. Fill bags halfway with sand or soil and stack them lengthwise and parallel to water flow. Do not place them directly against exterior walls.
San Bernardino County provides free sandbags at County Fire stations, but supplies are limited and intended for emergencies. Sand and sandbags can be purchased at many home improvement and hardware stores. Visit the San Bernardino County Fire Protection District website for tips on sandbag use.
Stay connected to county resources
Bookmark the Storm & Flood Information webpage on the county’s Public Works website for updates on weather, road closures and safety tips.
The county’s Preparedness Starts Here website offers disaster resources from various departments, including the Sheriff’s Department, County Fire and Public Works, to help residents stay safe during emergencies.
Sign up for emergency alerts
Sign up for the county’s Telephone Emergency Notification System (TENS) to receive emergency alerts on your phone. The SB Ready App provides real-time information on evacuation routes, shelters and weather updates to keep you informed.
Returning home after a flood
Reenter your home only when authorities declare it safe. Be cautious of downed power lines, gas leaks and structural damage. Take photos of any damage for insurance claims and keep children and pets away from floodwaters, which may carry contaminants. Protect yourself during cleanup by wearing gloves, boots and a mask to minimize exposure to potential contaminants.
San Bernardino County is committed to supporting residents in vulnerable areas. I encourage everyone to prepare now, so you can reduce your risks and ensure our communities stay safe and resilient.