Learn your vulnerability to flooding by determining the elevation of your property.
Evaluate your insurance coverage; as construction grows around areas, floodplains change. If you are in a flood area, consider what mitigation measure you can do in advance. More from the National Flood Insurance Program.
In highly flood-prone areas, keep materials on hand like sandbags, plywood, plastic sheeting, plastic garbage bags, lumber, shovels, work boots and gloves. Call your local emergency management agency to learn how to construct proper protective measures around your home.
Be aware of streams, drainage channels and areas known to flood, so you or your evacuation routes are not cut off.