Brookhaven, Pennsylvania Flood Zones
Last updated: March 2026
Brookhaven faces flooding from Chester Creek in Delaware County. Heavy rainfall events cause creek overflows that threaten residential areas along the creek corridor.
Delaware County has recorded 3,032 NFIP flood insurance claims since 1978, totaling $57.1M in payouts. Explore the full NFIP claims data by state and county to see how this area compares nationally.
FEMA Region
Region 3
NFIP Policies
2,512
Delaware County
Avg. Premium
$861/yr
Delaware County
FEMA Flood Risk Profile: Delaware 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 HighEst. annual loss: $73.9M
Coastal Flood Risk
Relatively ModerateEst. annual loss: $730K
Hurricane Risk
Relatively ModerateEst. annual loss: $5.9M
Source: FEMA National Risk Index, county-level assessment. Individual property risk may vary.
Federal Flood Disaster History: Delaware County
Delaware County has been included in 13 federal flood-related disaster declarations.
...and 5 earlier declarations since 1971.
These declarations affected communities across Delaware County, including Brookhaven.
Source: OpenFEMA Disaster Declarations Summaries API. Data sourced February 2026.
NFIP Flood Insurance Claims: Delaware County
Properties in Delaware County have filed 3,032 NFIP flood insurance claims totaling $57.1M in payouts since 1978. The average claim payout is $19K.
Highest-Claim Years
1999
509 claims - $11.7M
2004
334 claims - $5.6M
2010
326 claims - $8.8M
Claims by Flood Zone
Source: OpenFEMA NFIP Claims API. Data sourced March 2026. See national claims data.
What Your Flood Zone Means in Brookhaven
Brookhaven faces flood risk primarily from river and stream overflow during heavy rainfall, snowmelt, or upstream dam releases. When rivers exceed their banks, floodwaters spread across low-lying areas mapped in AE and A zones. The most common FEMA flood zone designations in Brookhaven are Zone AE, Zone X. FEMA's National Risk Index estimates the county's annual expected loss from inland flooding at over $73.9M.
Riverine flood risk in Brookhaven is driven by the proximity and elevation of properties relative to nearby waterways. Properties closer to rivers with lower ground elevations typically face higher flood insurance premiums under FEMA's Risk Rating 2.0. 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.
River flood maps can change when FEMA conducts new Flood Insurance Studies or when development alters drainage patterns. Letters of Map Amendment (LOMA) can remove individual properties if the natural ground elevation was always above the Base Flood Elevation and the property was inadvertently mapped in the SFHA. Use our free lookup tool to check the current flood zone for any Brookhaven address.
Flood Insurance Discount: Brookhaven
Brookhaven participates in FEMA's Community Rating System (CRS), a voluntary program that rewards communities for flood mitigation efforts beyond minimum NFIP requirements. Residents in the Special Flood Hazard Area may qualify for reduced flood insurance premiums.
CRS Class
Class 9
SFHA Premium Discount
5% off
CRS classes range from 1 (best) to 10 (no discount). Brookhaven's Class 9 rating means NFIP policyholders in the SFHA can receive up to a 5% discount on their flood insurance premiums. Properties outside the SFHA may receive a 5% discount.
Source: FEMA Community Rating System, October 2025. Discounts apply to NFIP policies only.
Brookhaven, PA Flood Zone FAQ
What flood zones are in Brookhaven, PA?
The most common FEMA flood zones in Brookhaven are Zone AE, 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 Brookhaven?
If your Brookhaven 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 Brookhaven?
Enter your Brookhaven 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.
Does Brookhaven offer flood insurance discounts?
Yes. Brookhaven participates in FEMA's Community Rating System (CRS) with a Class 9 rating, qualifying residents in the Special Flood Hazard Area for up to a 5% discount on NFIP flood insurance premiums. Properties outside the SFHA may receive a 5% discount.
Has Brookhaven experienced major flooding events?
Delaware County, where Brookhaven is located, has been part of 13 federal disaster declarations for flooding, hurricanes, or severe storms. The most recent was Remnants of Hurricane Ida in 2021. Federal disaster declarations are issued when flooding overwhelms local resources and triggers FEMA assistance programs.
How many flood insurance claims have been filed in Brookhaven?
Delaware County has recorded 3,032 NFIP flood insurance claims totaling $57.1M in payouts since 1978. The year with the most claims was 1999, with 509 claims and $11.7M in payouts. These figures cover all NFIP claims in the county, including Brookhaven.
How many flood insurance policies are active in Brookhaven?
Delaware County currently has 2,512 active NFIP flood insurance policies with an average annual premium of $861. The most policies are in Zone AE (1,156 policies). These figures cover all active NFIP policies in the county.
Can my Brookhaven 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 Brookhaven?
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 Brookhaven's Zone AE 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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Look Up Any Brookhaven, PA Address
Enter a Brookhaven, PA address to instantly check its FEMA flood zone designation, SFHA status, and insurance requirements.
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.