Lyon, NV
Lyon County in Nevada has 4 FEMA disaster declarations on record covering 1965–2023, most recently Severe Winter Storms, Flooding, Landslides, and Mudslides on Apr 27, 2023 (DR-4708). Its flood risk grade is A (Low risk), ranking #2269 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.
FEMA Disaster Declarations in Lyon County
The 4 most recent federally declared disasters affecting Lyon County, NV (1965–2023). Total declarations on record: 4.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Apr 27, 2023 | Flood | Severe Winter Storms, Flooding, Landslides, and Mudslides | DR-4708 |
| Sep 13, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3243 |
| Feb 28, 1986 | Flood | Severe Storms & Flooding | DR-759 |
| Jan 18, 1965 | Flood | Severe Storms, Heavy Rains & Flooding | DR-187 |
Score Breakdown
The composite score of 10 is calculated from four weighted factors. See our methodology for details.
Other Counties in Nevada
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Douglas | A | 10 | 8 | 4 |
| Storey | A | 10 | 0 | 4 |
| Moapa River Indian Reservation | A | 11 | 0 | 6 |
| Clark | A | 9 | 5 | 3 |
| Eureka | A | 9 | 0 | 2 |
| Humboldt | A | 9 | 0 | 2 |
More Counties in Nevada
Frequently Asked Questions
How many FEMA disaster declarations does Lyon County, NV have?
Lyon County, NV has 4 federal disaster declarations on FEMA record (1965–2023). The 4 most recent are: Severe Winter Storms, Flooding, Landslides, and Mudslides (declared Apr 27, 2023, DR-4708); Hurricane Katrina Evacuation (declared Sep 13, 2005, DR-3243); Severe Storms & Flooding (declared Feb 28, 1986, DR-759); Severe Storms, Heavy Rains & Flooding (declared Jan 18, 1965, DR-187). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Lyon County, NV?
Lyon County is graded A (composite score 10/100, low risk). It ranks #2269 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 Lyon County?
0 NFIP flood insurance claims have been filed in Lyon County, NV, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Lyon County, NV had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Lyon County was Severe Winter Storms, Flooding, Landslides, and Mudslides on Apr 27, 2023 (DR-4708). The county has 4 declared disasters in the OpenFEMA record covering 1965–2023.
The this entity record above pulls directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. What follows is the per-entity context — how this entity sits in the broader U.S. flood risk, NFIP claims, and disaster declarations distribution and which underlying factors drive the headline numbers.
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.