Flood risk can, and does, change over time. A map change can happen for many reasons: new development, changes in levee classification, and environmental changes, to name a few. As a result FEMA is updating flood hazard maps across the country. These new flood maps, also, known as Digital Flood Insurance Rate Maps (DFIRMs), show flood risk at a property-by-property level.
When new maps are issued, your risk may have changed as well along with your flood insurance requirements. If your property is mapped out of a high-risk area, your flood insurance costs will likely decrease. If you've been mapped into a high-risk area, you will be required to purchase flood insurance if your mortgage is through a federally regulated or insured lender. But you can save money with the PRP Eligibility Extension and through a process known as "grandfathering" provided by the NFIP. If your property was newly mapped into a high-risk flood zone after October 1, 2008, you may qualify for a PRP flood insurance policy.
If you live near a levee, your flood risk may be higher than you thought. Hundreds of levees across the country no longer meet federal standards for protection, so when new maps are issued, these areas will be shown as high risk.