Delta, MI
Delta County in Michigan has 1 FEMA disaster declaration on record covering 2005, most recently Hurricane Katrina Evacuation on Sep 7, 2005 (DR-3225). Its flood risk grade is A (Low risk), ranking #3118 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 Delta County
The 1 most recent federally declared disasters affecting Delta County, MI (2005). Total declarations on record: 1.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 7, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3225 |
Score Breakdown
The composite score of 8 is calculated from four weighted factors. See our methodology for details.
Other Counties in Michigan
More Counties in Michigan
Frequently Asked Questions
How many FEMA disaster declarations does Delta County, MI have?
Delta County, MI has 1 federal disaster declarations on FEMA record (2005). The 1 most recent are: Hurricane Katrina Evacuation (declared Sep 7, 2005, DR-3225). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Delta County, MI?
Delta County is graded A (composite score 8/100, low risk). It ranks #3118 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 Delta County?
0 NFIP flood insurance claims have been filed in Delta County, MI, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Delta County, MI had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Delta County was Hurricane Katrina Evacuation on Sep 7, 2005 (DR-3225). The county has 1 declared disasters in the OpenFEMA record covering 2005.
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.
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.