What is flood proofing?

Flood proofing is defined as combination of structural and non-structural changes, or adjustments made in the building that reduces or prevents flood damage to the structure and/or its contents. It can also be stated as any structural or non-structural measures intended to prevent damage from flooding to a building. 

It also covers the preparation of plans and emergency actions taken such as sandbagging, moving furniture’s and valuables to high floors, blocking openings or safely evacuating the area. 

However, flood proofing is not cure for flood problems but one of the many available flood damage reduction tools. 

Height of maximum flood level, Velocity of water flow during flood peaks and Duration and frequency of flood should be considered while flood proofing. 

The ultimate decision to use flood proofing techniques alone, or in combination with flood protection works requires cost-benefit analysis. Flood proofing is economically justified when the anticipated benefits exceeds the estimated cost. 

Two types of flood proofing are widely recognized: 

•    Dry flood proofing 

Dry flood proofing is the practice of making a building watertight or substantially impermeable to floodwaters up to the expected flood water height. (FEMA, 2008) http://floodresilience.net/solutions/item/dry-proofing

•    Wet flood proofing

Wet flood proofing reduces damage from flooding in three ways: allowing flood water to easily enter and exit a structure in order to minimize structural damage; Use of flood damage resistant materials; and elevating important utilities. (FEMA, 2008) http://floodresilience.net/solutions/item/wet-flood-proofing 


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