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Lewis, MO

Flood Risk Score: 11/100 · Rank #1749 of 3,277 counties

Lewis County in Missouri has 6 FEMA disaster declarations on record covering 1973–2016, most recently Severe Storms, Tornadoes, Straight-Line Winds, and Flooding on Jan 2, 2016 (DR-3374). Its flood risk grade is A (Low risk), ranking #1749 of 3,277 U.S. counties, with 2 NFIP flood insurance claims totaling $64,865 in payouts. Flood risk is relatively low compared to the national average.

11
Risk Score
2
NFIP Claims
$64,865
Total Payouts
6
Disasters
$32,433
Avg Claim
2
Active Policies

FEMA Disaster Declarations in Lewis County

The 6 most recent federally declared disasters affecting Lewis County, MO (1973–2016). Total declarations on record: 6.

DeclaredIncident TypeTitleFEMA Disaster #
Jan 2, 2016FloodSevere Storms, Tornadoes, Straight-Line Winds, and FloodingDR-3374
Jun 30, 2011FloodFloodingDR-3325
Sep 10, 2005HurricaneHurricane Katrina EvacuationDR-3232
Jul 9, 1993FloodSevere Storms & FloodingDR-995
Oct 14, 1986FloodSevere Storms & FloodingDR-779
Nov 1, 1973FloodSevere Storms & FloodingDR-407

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%
13
Claim Severity
20%
0
Year-over-Year Trend
15%
50

Other Counties in Missouri

CountyGradeScoreClaimsDisasters
MontgomeryA1107
Cape GirardeauA1157
MississippiA1106
New MadridA1146
PemiscotA1106
PerryA1117
View All Counties in Missouri

Frequently Asked Questions

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

Lewis County, MO has 6 federal disaster declarations on FEMA record (1973–2016). The 5 most recent are: Severe Storms, Tornadoes, Straight-Line Winds, and Flooding (declared Jan 2, 2016, DR-3374); Flooding (declared Jun 30, 2011, DR-3325); Hurricane Katrina Evacuation (declared Sep 10, 2005, DR-3232); Severe Storms & Flooding (declared Jul 9, 1993, DR-995); Severe Storms & Flooding (declared Oct 14, 1986, DR-779). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.

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

Lewis County is graded A (composite score 11/100, low risk). It ranks #1749 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?

2 NFIP flood insurance claims have been filed in Lewis County, MO, totaling $64,865 in payouts. The average claim is $32,433. Source: FEMA FimaNfipClaims v2 dataset.

Has Lewis County, MO had any recent flood disasters?

Yes. The most recent FEMA declaration affecting Lewis County was Severe Storms, Tornadoes, Straight-Line Winds, and Flooding on Jan 2, 2016 (DR-3374). The county has 6 declared disasters in the OpenFEMA record covering 1973–2016.

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.

Every number on this page links back to FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.

For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.

Source: FEMA OpenFEMA datasets, 2026.