Why are floodplain maps being updated?

The maps are being updated because the majority of the maps are based on analyses that were performed over 25 years ago. Watershed conditions such as topography have changed and there has been significant added development. Furthermore, analysis tools and historical data collection have improved over time and will increase map accuracy.

Flood hazard mapping is an important part of the National Flood Insurance Program (NFIP), as it is the basis of NFIP regulations and flood insurance requirements. The Federal Emergency Management Agency (FEMA) maintains and updates data through Flood Insurance Rate Maps (FIRMs) and risk assessments.

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1. Why are floodplain maps being updated?
2. How often are these maps updated?
3. Who initiated the update?
4. Where is this happening?
5. What is the general impact of new floodplains? Are more properties going to be in the floodplain?
6. Who should I talk to if I have questions?
7. What is the plan for educating the public about this?
8. Why and how do I obtain flood insurance in newly-mapped areas?
9. Am I eligible for the NFIP Grandfather Rule?