Astoria, OR Flood Zone Lookup
Last updated: March 2026
Astoria sits at the mouth of the Columbia River and faces coastal flooding from Pacific storms and Columbia River flooding. Tsunami risk from a Cascadia Subduction Zone earthquake is also a major concern.
Clatsop County has recorded 160 NFIP flood insurance claims since 1978, totaling $2.0M in payouts. Explore the full NFIP claims data by state and county to see how this area compares nationally.
FEMA Region
Region 10
NFIP Policies
1,606
Clatsop County
Avg. Premium
$1,190/yr
Clatsop County
FEMA Flood Risk Profile: Clatsop County
Based on FEMA's National Risk Index, which evaluates flood risk at the county level using historical loss data, exposure, and vulnerability.
Inland Flood Risk
Relatively LowEst. annual loss: $11.8M
Coastal Flood Risk
Very HighEst. annual loss: $12.2M
Source: FEMA National Risk Index, county-level assessment. Individual property risk may vary.
Federal Flood Disaster History: Clatsop County
Clatsop County has been included in 6 federal flood-related disaster declarations.
These declarations affected communities across Clatsop County, including Astoria.
Source: OpenFEMA Disaster Declarations Summaries API. Data sourced February 2026.
NFIP Flood Insurance Claims: Clatsop County
Properties in Clatsop County have filed 160 NFIP flood insurance claims totaling $2.0M in payouts since 1978. The average claim payout is $12K.
Highest-Claim Years
2007
33 claims - $584K
2006
22 claims - $327K
1996
17 claims - $462K
Claims by Flood Zone
Source: OpenFEMA NFIP Claims API. Data sourced March 2026. See national claims data.
Flood Insurance Coverage: Clatsop County
Only roughly 1 in 10 households in Clatsop County carries NFIP flood insurance (10% of estimated households). This county has elevated flood risk with below-average insurance coverage, meaning many flood losses may go uninsured.
Penetration Rate
10%
roughly 1 in 10 households
Historical Claims Ratio
1 in 10
160 claims over 45+ years across 1,606 current policies
Avg. Claim Payout
$12,394
Per claim, county-wide since 1978
Historically, Clatsop County has averaged 1 claim for every 10 active policies (since 1978). This compares cumulative claims against today's policy count and does not predict future claim likelihood.
Coverage data: NFIP policies as of March 2026, claims since 1978 (March 2026), population from FEMA NRI. All figures are county-wide and include Astoria.
What Your Flood Zone Means in Astoria
Astoria faces a combination of coastal and inland flood risks. Storm surge from hurricanes and tropical storms pushes seawater inland, while heavy rainfall simultaneously overwhelms rivers, bayous, and drainage infrastructure. This dual threat means flooding can come from multiple directions at once. The most common FEMA flood zone designations in Astoria are Zone AE, Zone VE, Zone X. FEMA's National Risk Index estimates the county's annual expected loss from inland flooding at over $11.8M. The county is rated "Very High" for coastal flood risk by FEMA's National Risk Index. Properties in Astoria's VE zones face additional wave action risk beyond still-water flooding, which typically results in higher insurance premiums and stricter building requirements.
Combined coastal and inland flood exposure in Astoria means properties may face higher premiums than areas with only one flood source. FEMA's Risk Rating 2.0 accounts for multiple flood sources, including coastal surge distance, river proximity, and rainfall-driven flooding. If your property is in a Special Flood Hazard Area (SFHA) and you have a federally regulated or government-backed mortgage, federal law generally requires your lender to ensure you carry flood insurance.
Flood maps in areas with combined coastal and inland risk are among the most complex in the FEMA system. Major storms often trigger FEMA restudies that can significantly shift zone boundaries. Letters of Map Revision (LOMR) after hurricanes may expand SFHA coverage as new storm data is incorporated. Use our free lookup tool to check the current flood zone for any Astoria address.
Repetitive Loss Properties: Clatsop County
Clatsop County has 9 properties with multiple flood insurance losses, including 1 severe repetitive loss properties. Severe repetitive loss is a subset of multiple loss, not a separate count. Data sourced March 2026.
Multiple Loss
9
2+ claims within 10 years
Severe Repetitive Loss
1
4+ claims or 2 exceeding value
Mitigated
0
Received FEMA mitigation
By Flood Zone
Source: OpenFEMA NFIP Multiple Loss Properties. Data sourced March 2026.
Recorded Flood Events: Clatsop County
NOAA has recorded 7 flood events in Clatsop County since 1996, causing $0 in damage.
Events by Type
Source: NOAA Storm Events Database, 1996-2026. Data sourced March 2026.
Flood Mitigation: Clatsop County
FEMA has funded mitigation for 6 properties in Clatsop County, investing $156K in flood risk reduction. Common mitigation actions include acquisition (buying and demolishing flood-prone structures), elevation (raising buildings above flood level), and safe rooms (wind/storm shelters for tornado and hurricane protection).
By Action Type
Source: OpenFEMA Hazard Mitigation Assistance. Data sourced March 2026.
Astoria, OR Flood Zone FAQ
What flood zones are in Astoria, OR?
The most common FEMA flood zones in Astoria are Zone AE, Zone VE, Zone X. Properties in these high-risk zones (SFHA) may require flood insurance with a federally regulated or government-backed mortgage.
Is flood insurance required in Astoria?
If your Astoria property is in a Special Flood Hazard Area (SFHA) and you have a federally regulated or government-backed mortgage, federal law generally requires your lender to ensure you carry flood insurance. Properties in Zone X are not federally required to carry flood insurance, though coverage is still recommended since over 40% of all NFIP flood claims come from Zone X properties.
How do I check my flood zone in Astoria?
Enter your Astoria address in the search tool above for an instant flood zone determination. Results include your FEMA flood zone, SFHA status, base flood elevation (if available), and FIRM panel information, pulled directly from FEMA's National Flood Hazard Layer.
What type of flooding affects Astoria?
Astoria is primarily affected by both coastal storm surge and inland flooding. The most common FEMA flood zone designations are Zone AE, Zone VE, Zone X. Use the free lookup tool above to check the specific flood zone for any Astoria address.
Has Astoria experienced major flooding events?
Clatsop County, where Astoria is located, has been part of 6 federal disaster declarations for flooding, hurricanes, or severe storms. The most recent was Hurricane Katrina Evacuation in 2005. Federal disaster declarations are issued when flooding overwhelms local resources and triggers FEMA assistance programs.
How many flood insurance claims have been filed in Astoria?
Clatsop County has recorded 160 NFIP flood insurance claims totaling $2.0M in payouts since 1978. The year with the most claims was 2007, with 33 claims and $584K in payouts. These figures cover all NFIP claims in the county, including Astoria.
How many flood insurance policies are active in Astoria?
Clatsop County currently has 1,606 active NFIP flood insurance policies with an average annual premium of $1,190. The most policies are in Zone X (1,099 policies). These figures cover all active NFIP policies in the county.
How many Astoria properties have flooded repeatedly?
Clatsop County has 9 properties with multiple flood losses on record, including 1 severe repetitive loss properties. These are properties that have experienced four or more NFIP claims of $5,000+ or two claims exceeding the building value.
Can my Astoria property be removed from a high-risk flood zone?
Yes, if your property's natural ground elevation is above the Base Flood Elevation and FEMA inadvertently mapped it in a high-risk zone, you can apply for a Letter of Map Amendment (LOMA). A successful LOMA removes the property from the Special Flood Hazard Area, generally eliminating the federal mandatory flood insurance requirement. You will need an elevation certificate from a licensed surveyor. If a property was raised above the BFE with fill material, the process is a LOMR-F rather than a LOMA.
What is Base Flood Elevation in Astoria?
Base Flood Elevation (BFE) is the predicted height of floodwaters during a 1% annual chance (100-year) flood, shown on FEMA maps as an elevation number in feet above sea level. In Astoria's Zone AE and Zone VE areas, BFE lines appear on the FIRM as wavy contours labeled with elevation values. Properties with a lowest floor at or above the BFE typically qualify for significantly lower NFIP flood insurance premiums.
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Disclaimer: Flood risk data on this page is sourced from FEMA datasets including the National Risk Index, NFIP claims and policy records, disaster declarations, and the Community Rating System. These datasets were last extracted on March 2026 and may not reflect the most recent changes. This page is for informational purposes only and is not a certified flood zone determination. Always verify current flood zone status through FEMA or a licensed determination provider before making property, insurance, or lending decisions.