What does the term "freeboard" refer to in floodplain management?

The term "freeboard" in floodplain management refers to an additional height requirement above the base flood elevation. This is a crucial concept in floodplain management as it serves as a safety margin designed to account for various uncertainties in floodplain modeling, such as potential changes in flood conditions or inaccuracies in flood elevation measurements.

By incorporating freeboard into floodplain management strategies, communities can enhance the resilience of structures against flooding, thereby reducing the risk of damage and loss. The commonly adopted practice is to elevate buildings and other structures above the base flood elevation by a certain amount, often determined by local regulations or standards.

This added height helps to provide a buffer against the unforeseen impacts of flooding, contributing to a more effective flood management approach. Such considerations are vital for protecting properties, infrastructure, and the safety of the population in flood-prone areas.