What should be used to determine the flood protection level for a new home if a preliminary study shows a new base flood elevation?

To determine the flood protection level for a new home based on a preliminary study indicating a new base flood elevation, it is essential to use the draft revised data unless the community disagrees. This is because draft data represents the most current understanding of flood risks for that area and reflects the best available information, which is crucial for effective floodplain management.

Using the preliminary or draft data ensures that the home is elevated or constructed to withstand the predicted flood risks identified in that study. Additionally, until the data is officially adopted or modified, it remains valid for development decisions. If the community has concerns or disputes regarding the draft data, they have the opportunity to address those concerns before finalizing the elevation requirements.

This approach aligns with the principles of floodplain management, which emphasize using the most accurate and timely data available to protect private properties and public infrastructure from flooding.