FEMA Interactive Flood Map

Protect your property with accurate flood risk information

Launch Interactive Map
FEMA Interactive Flood Map - For St Louis and U.S.
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Property Assessment

Determine if your property is located in a designated flood hazard area with our interactive mapping tool.

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Risk Statistics

Properties in low to moderate risk areas are 5x more likely to experience flood damage than fire over a 30-year period.

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Affordable Protection

Low-risk area flood insurance may cost less than $400 annually, providing essential protection for your home.

Why Flood Insurance Matters

Standard homeowners insurance policies typically do not cover flood damage, leaving many property owners vulnerable to significant financial loss. Even properties in low or moderate-risk zones can experience devastating flooding.

FEMA data indicates that just one inch of floodwater can cause up to $25,000 in damage to your home. Protect your investment with appropriate flood coverage, regardless of your property's designated risk level.

Important Disclaimer

The maps displayed are provided by the Federal Emergency Management Agency (FEMA) and may not reflect current or accurate information. These materials are presented solely for educational purposes, without any express or implied warranty by the website proprietor.

To definitively determine whether your property is situated within a flood hazard area, we recommend obtaining an official flood letter or elevation certificate from a licensed professional surveyor.

Secure Your Property Today

Consider flood insurance even if your property is classified in a low or moderate-risk zone. FEMA statistics indicate that residents in these areas are five times more likely to experience flood damage than fire damage to their homes over a 30-year period.

Call NFIP: 1-800-427-4661

How to Purchase Flood Insurance

Policies cannot be purchased directly through the National Flood Insurance Program (NFIP). Instead, coverage must be obtained via an insurance agent or company participating in the NFIP program.

Premium rates are standardized across all providers, ensuring consistent pricing regardless of which agent or company facilitates your coverage. To connect with an authorized flood insurance provider, please contact the NFIP Referral Call Center at 1-800-427-4661.

Understanding Flood Zones and Risk Categories

FEMA designates flood zones based on the calculated risk of flooding. Understanding these designations is crucial when assessing your property's vulnerability and insurance requirements.

High-Risk Flood Zones (Special Flood Hazard Areas)

Zone A, AE, AH, AO, AR, A99: Areas with a 1% annual chance of flooding (also known as the 100-year floodplain). Flood insurance is mandatory if you have a federally backed mortgage.

Zone V, VE, VO: Coastal areas with additional hazards associated with storm waves. These carry the highest flood insurance premiums due to elevated risk.

Moderate to Low-Risk Flood Zones

Zone B, X (shaded): Areas with a 0.2% annual chance of flooding (500-year floodplain). Flood insurance is recommended but not federally required.

Zone C, X (unshaded): Areas with minimal flooding risk. While insurance rates are typically lower here, approximately 25% of all flood insurance claims come from properties in these zones.

Undetermined Risk Areas

Zone D: Areas where flood hazards are possible but not yet determined. These often include areas with pending levee certification or developing regions.

Flood Mitigation Strategies for Homeowners

Beyond insurance, implementing these flood mitigation techniques can help protect your property and potentially lower your insurance premiums:

Elevation

Consider elevating your home's lowest floor above the Base Flood Elevation (BFE). For new construction or substantial renovations in high-risk areas, this may be required by building codes.

Floodproofing

Dry floodproofing involves sealing your property to prevent water entry. Wet floodproofing allows water to flow through certain areas of your property without causing structural damage.

Drainage Improvements

Proper grading, rain gardens, and permeable driveways can reduce water accumulation around your foundation. Consider installing a sump pump with battery backup.

Electrical System Protection

Elevate electrical systems, HVAC equipment, and water heaters above expected flood levels to minimize damage and safety hazards during flooding events.

Common Flood Insurance Questions

What does flood insurance cover?

Standard NFIP flood insurance policies typically cover structural damage to your building and foundation, electrical and plumbing systems, HVAC equipment, water heaters, and major appliances. Contents coverage, which must be purchased separately, protects personal belongings like furniture, clothing, and electronics.

Is there a waiting period for flood insurance?

Yes, NFIP policies typically have a 30-day waiting period before coverage takes effect. Some exceptions apply, such as when obtaining a policy in connection with a loan closing. Private flood insurance may offer shorter waiting periods.

How are flood insurance premiums calculated?

Premiums are based on several factors including flood zone designation, building characteristics (age, number of floors, presence of a basement), amount of coverage, and your deductible choice. The elevation of your property relative to the Base Flood Elevation (BFE) is also a significant factor in high-risk zones.

Can I get flood insurance if I rent my home?

Yes, renters can purchase flood insurance for their personal belongings. The building owner would need a separate policy to cover the structure itself.

Does flood insurance cover basement flooding?

NFIP policies provide limited coverage for basements and areas below the lowest elevated floor. Structural elements and essential equipment like electrical systems and furnaces are typically covered, but finished walls, floors, and personal property may not be.

Flood Resources and Related Services

Local Resources

  • County floodplain management offices provide specific information about local flood risks
  • State emergency management agencies offer preparedness guidance
  • Community flood education programs often provide free resources

Property Evaluation Services

  • Professional land surveyors can prepare elevation certificates
  • Certified home inspectors may identify potential flooding vulnerabilities
  • Structural engineers can recommend specific floodproofing measures

Additional FEMA Resources

  • FloodSmart.gov - The official website of the NFIP
  • FEMA Flood Map Service Center - Official FEMA flood maps
  • FEMA's "Homeowner's Guide to Retrofitting" - Six ways to protect your home from flooding

Emergency Planning

  • Create a family emergency plan specific to flooding
  • Build an emergency kit with essential supplies
  • Register for local emergency alerts and warning systems

Understanding the Impact of Recent Flood Map Updates

FEMA regularly updates flood maps as environmental conditions, development patterns, and flood modeling technology evolve. Recent updates may have changed your property's flood zone designation, potentially affecting your insurance requirements and premiums.

If your property has been newly designated in a high-risk zone, you may qualify for lower-cost "grandfathered" rates. Conversely, if your property has been reclassified to a lower-risk zone, you might consider maintaining your previous coverage at a reduced rate through the NFIP's Preferred Risk Policy.

Contact a flood insurance agent to discuss how recent map changes may impact your specific situation and to explore available options for maintaining comprehensive protection at the most favorable rates.