12/19/2017
Preparing For Rain After A Wildfire
Dec 14, 2017 | Rain Ready
Wildfires dramatically alter the natural landscape by removing vegetation and exposing soil to wind and rain. These changes substantially increase the risk of flash floods and debris flows, even in areas not usually prone to these hazards.
Normally, grasses, shrubs and trees slow rainfall and improve soil absorption. Leaf litter further protects the soil from erosive rainfall. Wildfires burn vegetation and leaf litter to ash, leaving the soil exposed and less able to absorb rain. The result is increased runoff which can produce flash floods and debris or mudflows. Creeks and streams can be easily overwhelmed by these flows, as can streets and homes located below hillsides. The increased flood risk may last five years or more until the vegetation is restored.
Properly installed erosion control along slopes, or the installation of small diversion berms, can slow or redirect flows away from homes and streets. Planting or seeding areas which supported native vegetation does not increase the vegetation recovery rate. In non-native R E A D Y the most effective way to protect your property against flooding is to prepare before it rains. Preparations can consist of very simple home maintenance but, depending on your circumstances, may involve the construction of permanent drainage systems, walls or other measures to divert water, mud or debris. For more information on flooding and flood landscaped areas, property owners may replace vegetation with appropriate fire-resistant, non-invasive plants. A local landscape professional can make recommendations for your particular area.
HOW TO GET READY
If you live in a flood-prone area, consider making permanent changes to your home such as constructing retaining walls and raising your furnace and electrical panel above potential flood levels.
Assemble an emergency supply kit as recommended by the American Red Cross.
Register your phone number(s) at www.vcalert.org so you can receive emergency messages.
Consider purchasing flood insurance. Many homeowners’ policies do not cover flood damage.
Create a list of items to take with you if you are asked to evacuate. In addition to your emergency supplies, consider items such as: keys, cash and credit cards; photos; insurance papers; computers; prescriptions; and pet supplies.
Clear debris from roof gutters, downspouts and drains so water can flow and drain properly.
Have a supply of sandbags and other flood prevention materials such as plastic sheeting, plywood and tarps.
Check the roof for leaks or damage and pay special attention to areas where separation could occur, such as around the chimney.
HOW TO GET SET
Gather emergency supplies, evacuation items and review evacuation routes in case you are asked to evacuate.
Be aware that flash flooding can occur during periods of heavy or extended rain. If there is any possibility of a flash flood in your area, move immediately to higher ground. Do not wait for an evacuation order.
Fill the gas tanks in your vehicles.
Bring in outside furniture that could be carried away by floodwaters.
Move furniture and other valuables to high points – upper floors if possible – in your home.
Fill and place sandbags if necessary.
Monitor gutters, drains and other areas that could cause flooding. Clear away debris immediately to prevent clogging or damming.
DURING A FLOOD
Remember to take your emergency supplies and valuables.
When asked to leave, evacuate to higher ground.
Stay out of floodwaters and avoid moving water. Do not try to walk, swim or drive through moving water. As little as six inches of moving water can knock you off your feet. Two feet of water is enough to carry away a passenger vehicle.
Stay away from downed power lines and piles of debris.
Constantly monitor the news media and other information outlets for weather and emergency updates.
When evacuating, be aware of stream channels, drain channels, canyons and other areas known to flood suddenly. Flash floods in these areas can occur without warning.
Avoid parking or camping near streams, rivers or creeks. The water may rise very quickly.
Use a secondary evacuation route if your primary route is blocked by water.
FLOOD TERMINOLOGY:
FLOOD WATCH: Flooding is possible in your area.
FLOOD WARNING: Flooding in your area is imminent or already occurring.
FLASH FLOOD: A sudden, violent flood. Flash floods often come as a wave.
AFTER THE FLOOD
Stay away from areas damaged by floodwaters, mud or debris flows.
Continue to monitor the media and other sources of information. Additional flooding could occur.
Do not drive around barriers. Roadways may have been washed out, undermined or otherwise damaged by floodwaters.
Stay on firm ground. If forced to walk through mud-covered areas, use a stick to gauge the depth of the mud in front of you.
Avoid standing water. It may be contaminated by oil, gasoline or sewage, or electrically charged by underground or downed power lines.
Flooding may have caused familiar places to change. Floodwaters can erode roads and walkways. The area may be very slippery and make walking difficult. Flood debris may hide animals, broken glass or other dangerous items.
Use extreme caution when entering any buildings that were subjected to floodwaters, mud or debris. Floodwaters may have caused hidden damage, affected electrical systems or undermined the foundation.
Remove wet contents immediately. Clean and disinfect everything that got wet and safely discard anything that actually absorbed flood water.
Throw out any food items that have come in contact with floodwater.
Assume that drinking water is unsafe until you are told otherwise by authorities.
Take photos of damage for insurance claims.
Look for fire hazards: broken gas lines, flooded electrical circuits, etc.
Cover broken windows, holes in the roof, etc. to prevent further damage.
READY
The most effective way to protect your property against flooding is to prepare before it rains. Preparations can consist of very simple home maintenance but, depending on your circumstances, may involve the construction of permanent drainage systems, walls or other measures to divert water, mud or debris.
SET
When heavy rain has been forecast – or when heavy, steady rain is falling – monitor the news media, websites and social media sites for updated weather conditions. Practice “situational awareness.” Know and understand what is going on around you so that if conditions worsen you can take the necessary actions to protect your home and family.
GO
If flooding occurs, you are safest staying in your home if it is not being affected by floodwaters, mud or debris. If asked to evacuate, do so immediately and proceed to higher ground or an established evacuation center. If the water rises suddenly and you cannot evacuate, move to the second floor or, if necessary, the roof.
FOR MORE INFORMATION VISIT:
Ventura County Watershed Protection District • 800 S. Victoria Ave. • Ventura, CA 93009-1600
805-654-2001
http://www.ready.gov/floods VC Alert
http://www.vcalert.org
http://vcfd.org/images/ready-set-go/RSG_Flood-Preparation_web.pdf
805-648-9283
[email protected]
National Weather Service
http://www.wrh.noaa.gov/lox/?mystation=KCMA Ready Ventura County
http://www.readyventuracounty.org
Ready Ventura County