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Insurance Glossary

Special Flood Hazard Area

Property

Definition

High-risk flood zones designated by FEMA where there is at least a 1% chance of flooding in any given year (also known as the 100-year floodplain). Properties located in SFHAs and secured by federally backed mortgages are required by law to carry flood insurance. These areas are shown on Flood Insurance Rate Maps (FIRMs) and include Zone A (riverine flooding) and Zone V (coastal flooding with wave action). Buildings in SFHAs face significantly higher flood insurance premiums than those in moderate or low-risk zones.

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Related Terms

Flood Zone
Geographic areas that FEMA defines according to varying levels of flood risk. These zones are depicted on Flood Insurance Rate Maps (FIRMs) and determine flood insurance requirements and premiums. High-risk zones (Special Flood Hazard Areas) include Zone A (1% annual chance of flooding) and Zone V (coastal high-hazard areas with wave action). Moderate-to-low risk zones include Zone B, C, and X. Properties in high-risk zones with federally backed mortgages must carry flood insurance. Zone designations directly impact insurance costs and building requirements.
NFIP
The National Flood Insurance Program is a federal program created by Congress in 1968 to provide flood insurance to property owners, renters, and businesses. Managed by FEMA, the NFIP makes flood insurance available in communities that adopt and enforce floodplain management regulations to reduce future flood damage. Standard homeowners insurance does not cover flood damage, making NFIP policies essential for properties in flood-prone areas. The program offers up to $250,000 in building coverage and $100,000 in contents coverage.
Base Flood Elevation
The computed elevation to which floodwater is anticipated to rise during a base flood (a flood with a 1% chance of occurring in any given year, also called a 100-year flood). Shown on FEMA Flood Insurance Rate Maps (FIRMs), the BFE is used to determine flood insurance premiums and building requirements. Structures built below the BFE face higher insurance costs and greater flood risk. Local building codes typically require new construction in flood zones to have the lowest floor elevated at or above the BFE. Knowing your property's BFE is crucial for flood risk assessment and insurance decisions.
100-Year Flood
A flood event that has a 1% probability of occurring in any given year, not a flood that happens once every 100 years. This statistical measure defines the Special Flood Hazard Area and base flood elevation used by FEMA and the National Flood Insurance Program. Properties in 100-year floodplains face mandatory flood insurance requirements if they have federally backed mortgages. The term is often misunderstood—a 100-year flood can occur multiple times within 100 years, or not at all. Over a 30-year mortgage, a property in a 100-year floodplain has a 26% chance of experiencing such a flood.
Actual Cash Value
The repayment value for indemnification due to loss or damage of property; in most cases it is replacement cost minus depreciation.
Depreciation
The decrease in value of property over time due to wear, tear, age, or obsolescence.
Hazard
A condition or situation that increases the likelihood or potential severity of a loss.
Replacement Cost
The cost to replace damaged or destroyed property with new property of similar kind and quality, without deduction for depreciation.