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Lewis, NY

Flood Risk Score: 11/100 · Rank #1358 of 3,277 counties

Lewis County in New York has 7 FEMA disaster declarations on record covering 1985–2024, most recently Severe Storm, Tornadoes, and Flooding on Aug 29, 2024 (DR-4814). Its flood risk grade is A (Low risk), ranking #1358 of 3,277 U.S. counties, with 0 NFIP flood insurance claims totaling $0 in payouts. Flood risk is relatively low compared to the national average.

11
Risk Score
0
NFIP Claims
$0
Total Payouts
7
Disasters
$0
Avg Claim
0
Active Policies

FEMA Disaster Declarations in Lewis County

The 7 most recent federally declared disasters affecting Lewis County, NY (1985–2024). Total declarations on record: 7.

DeclaredIncident TypeTitleFEMA Disaster #
Aug 29, 2024FloodSevere Storm, Tornadoes, and FloodingDR-4814
Oct 8, 2021HurricaneRemnants of Tropical Storm FredDR-4625
Oct 28, 2012HurricaneHurricane SandyDR-3351
Jun 10, 2011FloodSevere Storms, Flooding, Tornadoes, and Straight-Line WindsDR-1993
Sep 30, 2005HurricaneHurricane Katrina EvacuationDR-3262
Jan 24, 1996FloodSevere Storms and FloodingDR-1095
Mar 20, 1985FloodFloodingDR-733

Score Breakdown

The composite score of 11 is calculated from four weighted factors. See our methodology for details.

Claims Density
40%
0
Disaster Frequency
25%
15
Claim Severity
20%
0
Year-over-Year Trend
15%
50

Other Counties in New York

CountyGradeScoreClaimsDisasters
CortlandA1127
BroomeA112211
SchuylerA1106
ClintonA1116
FranklinA1106
MadisonA1157
View All Counties in New York

Frequently Asked Questions

How many FEMA disaster declarations does Lewis County, NY have?

Lewis County, NY has 7 federal disaster declarations on FEMA record (1985–2024). The 5 most recent are: Severe Storm, Tornadoes, and Flooding (declared Aug 29, 2024, DR-4814); Remnants of Tropical Storm Fred (declared Oct 8, 2021, DR-4625); Hurricane Sandy (declared Oct 28, 2012, DR-3351); Severe Storms, Flooding, Tornadoes, and Straight-Line Winds (declared Jun 10, 2011, DR-1993); Hurricane Katrina Evacuation (declared Sep 30, 2005, DR-3262). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.

What is the flood risk grade for Lewis County, NY?

Lewis County is graded A (composite score 11/100, low risk). It ranks #1358 of 3,277 U.S. counties for flood risk in our scoring model. The grade combines NFIP claims density (40%), disaster frequency (25%), claim severity (20%), and year-over-year trend (15%).

How many NFIP flood insurance claims have been filed in Lewis County?

0 NFIP flood insurance claims have been filed in Lewis County, NY, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.

Has Lewis County, NY had any recent flood disasters?

Yes. The most recent FEMA declaration affecting Lewis County was Severe Storm, Tornadoes, and Flooding on Aug 29, 2024 (DR-4814). The county has 7 declared disasters in the OpenFEMA record covering 1985–2024.

this entity is one of the data points covered by this site’s U.S. flood risk, NFIP claims, and disaster declarations dataset. The detail above comes directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the context that follows situates the headline numbers against the broader distribution across U.S. ZIPs, counties, and states.

The methodology behind every numeric value on this page is publicly documented on the FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.

Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. ZIPs, counties, and states. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.

Source: FEMA OpenFEMA datasets, 2026.