Protecting Your Property from Flooding ...
Are You At Risk?
If you aren't sure whether your house is at risk from
flooding, check with your local floodplain manager, building official, city
engineer, or planning and zoning administrator. They can tell you whether you
are in a flood hazard area. Also, they usually can tell you how to protect
yourself and your house and property from flooding.
What You Can Do
Flood protection can involve a variety of changes to your
house and property -- changes that can vary in complexity and cost. You may be
able to make some types of changes yourself. But complicated or large-scale
changes and those that affect the structure of your house or its electrical
wiring and plumbing should be carried out only by a professional contractor
licensed to work in your state, county, or city. One example of flood protection
is anchoring fuel tanks. This is something that skilled home-owners can probably
do on their own.
Anchor Fuel Tanks
fuel tanks can be easily moved by flood waters. These tanks pose serious threats
not only to you, your family, and your house, but also to public safety and the
environment. An unanchored tank outside your house can be driven into your
walls, and it can be swept downstream, where it can damage other houses. When an
unanchored tank in your basement is moved by flood waters, the supply line can
tear free and your basement can be contaminated by oil. Even a buried tank can
be pushed to the surface by the buoyant effect of soil saturated by water.
As shown in the figure, one way to anchor a tank is to attach
it to a large concrete slab whose weight is great enough to resist the force of
flood waters. This method can be used for all tanks, both inside and outside
your house. You can also anchor an outside tank by running straps over it and
attaching them to ground anchors.
Keep these points in mind when you anchor a fuel tank:
If you prefer not to do this work yourself, you can have a
handyman or contractor anchor your tank.
Extend all filling and ventilation tubes above the 100-year
flood level so that flood waters cannot enter the tank.
Close all connections when flood warnings are issued
Anchoring a 1,000-gallon fuel tank to a concrete base will
cost you about $300 to $500. Using straps and ground anchors will cost about
Other Sources of Information
Protecting Your Home from Flooding, FEMA, 1994
Repairing Your Flooded Home, FEMA-234, 1992
Flood Emergency and Residential Repair Handbook, FIA-13, 1986
Retrofitting Flood-Prone Residential Structures, FEMA-114,
Building Utilities from Flood Damage, FEMA -348, 1999
To obtain copies of these and other FEMA documents, call FEMA
Publications at 1-800-480-2520. Information is also available on the
World Wide Web at http://www.fema.gov.