Mellette, SD
Mellette County in South Dakota has 5 FEMA disaster declarations on record covering 1997–2019, most recently Severe Storms and Flooding on Sep 23, 2019 (DR-4463). Its flood risk grade is A (Low risk), ranking #2184 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 Mellette County
The 5 most recent federally declared disasters affecting Mellette County, SD (1997–2019). Total declarations on record: 5.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 23, 2019 | Flood | Severe Storms and Flooding | DR-4463 |
| Jun 7, 2019 | Flood | Severe Winter Storm, Snowstorm, and Flooding | DR-4440 |
| Sep 10, 2005 | Coastal Storm | Hurricane Katrina Evacuation | DR-3234 |
| May 17, 2001 | Flood | Severe Winter Storms, Flooding, and Ice Jams | DR-1375 |
| Apr 7, 1997 | Flood | Severe Flooding, Sever Winter Storms,heavy Rains High Winds | DR-1173 |
Score Breakdown
The composite score of 10 is calculated from four weighted factors. See our methodology for details.
Other Counties in South Dakota
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Dewey | A | 10 | 0 | 4 |
| Perkins | A | 10 | 0 | 5 |
| Ziebach | A | 10 | 0 | 5 |
| Bennett | A | 10 | 0 | 5 |
| Campbell | A | 10 | 0 | 5 |
| Custer | A | 10 | 0 | 5 |
More Counties in South Dakota
Frequently Asked Questions
How many FEMA disaster declarations does Mellette County, SD have?
Mellette County, SD has 5 federal disaster declarations on FEMA record (1997–2019). The 5 most recent are: Severe Storms and Flooding (declared Sep 23, 2019, DR-4463); Severe Winter Storm, Snowstorm, and Flooding (declared Jun 7, 2019, DR-4440); Hurricane Katrina Evacuation (declared Sep 10, 2005, DR-3234); Severe Winter Storms, Flooding, and Ice Jams (declared May 17, 2001, DR-1375); Severe Flooding, Sever Winter Storms,heavy Rains High Winds (declared Apr 7, 1997, DR-1173). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Mellette County, SD?
Mellette County is graded A (composite score 10/100, low risk). It ranks #2184 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 Mellette County?
0 NFIP flood insurance claims have been filed in Mellette County, SD, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Mellette County, SD had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Mellette County was Severe Storms and Flooding on Sep 23, 2019 (DR-4463). The county has 5 declared disasters in the OpenFEMA record covering 1997–2019.
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.
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.