Petroleum, MT
Petroleum County in Montana has 5 FEMA disaster declarations on record covering 1986–2023, most recently Flooding on Oct 11, 2023 (DR-4745). Its flood risk grade is A (Low risk), ranking #1830 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 Petroleum County
The 5 most recent federally declared disasters affecting Petroleum County, MT (1986–2023). Total declarations on record: 5.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Oct 11, 2023 | Flood | Flooding | DR-4745 |
| Aug 30, 2018 | Flood | Flooding | DR-4388 |
| Jul 10, 2013 | Flood | Flooding | DR-4127 |
| Sep 13, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3253 |
| Mar 15, 1986 | Flood | Heavy Rains, Landslides & Flooding | DR-761 |
Score Breakdown
The composite score of 10 is calculated from four weighted factors. See our methodology for details.
Other Counties in Montana
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Carbon | A | 10 | 1 | 5 |
| Daniels | A | 10 | 0 | 5 |
| Fergus | A | 10 | 0 | 5 |
| Garfield | A | 10 | 0 | 4 |
| Golden Valley | A | 10 | 0 | 4 |
| Musselshell | A | 10 | 0 | 5 |
More Counties in Montana
Frequently Asked Questions
How many FEMA disaster declarations does Petroleum County, MT have?
Petroleum County, MT has 5 federal disaster declarations on FEMA record (1986–2023). The 5 most recent are: Flooding (declared Oct 11, 2023, DR-4745); Flooding (declared Aug 30, 2018, DR-4388); Flooding (declared Jul 10, 2013, DR-4127); Hurricane Katrina Evacuation (declared Sep 13, 2005, DR-3253); Heavy Rains, Landslides & Flooding (declared Mar 15, 1986, DR-761). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Petroleum County, MT?
Petroleum County is graded A (composite score 10/100, low risk). It ranks #1830 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 Petroleum County?
0 NFIP flood insurance claims have been filed in Petroleum County, MT, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Petroleum County, MT had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Petroleum County was Flooding on Oct 11, 2023 (DR-4745). The county has 5 declared disasters in the OpenFEMA record covering 1986–2023.
For this entity, the underlying data on this page comes from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
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.