Every year, flooding causes more property damage in the United States than any other type of Natural Disaster. While recent construction practices and regulations have made new homes less prone to flooding many existing structures remain susceptible. Throughout the country, there is a growing interest from property owners to develop practical and cost effective methods for reducing or eliminating exposures to flooding. Several effective ways include acquisition and relocation of a building to a site not subject to flooding, construction of floodwalls or berms to keep water away from the property, or retrofitting structures to make them flood proof.
Retrofitting is a different approach to the other ways because the property itself remains subject to flooding while the building is modified to prevent or minimize flooding of habitable space. There are several recognizable approaches to retrofitting:
· Elevation of the structure above flood protection levels.
· Construction of barriers (floodwalls, berms).
· Dry floodproofing (permits entry and passage of floodwaters).
When a flood threatens, it is always advisable to take the following emergency actions:
· Sandbagging to reduce erosion and scouring.