Waukesha, WI
Waukesha County in Wisconsin has 7 FEMA disaster declarations on record covering 1969–2025, most recently Severe Storms, Straight-Line Winds, Flooding, and Mudslides on Sep 11, 2025 (DR-4892). Its flood risk grade is A (Low risk), ranking #268 of 3,277 U.S. counties, with 20 NFIP flood insurance claims totaling $979,765 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Waukesha County
The 7 most recent federally declared disasters affecting Waukesha County, WI (1969–2025). Total declarations on record: 7.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 11, 2025 | Flood | Severe Storms, Straight-Line Winds, Flooding, and Mudslides | DR-4892 |
| Sep 13, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3249 |
| Oct 7, 1986 | Flood | Severe Storms & Flooding | DR-775 |
| Aug 14, 1986 | Flood | Severe Storms | DR-770 |
| Mar 23, 1976 | Flood | Severe Storms, Icing, Wind & Flooding | DR-496 |
| Apr 27, 1973 | Flood | Severe Storms & Flooding | DR-376 |
| Jul 11, 1969 | Flood | Severe Storms & Flooding | DR-264 |
Score Breakdown
The composite score of 19 is calculated from four weighted factors. See our methodology for details.
Other Counties in Wisconsin
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Milwaukee | A | 19 | 54 | 8 |
| Crawford | A | 19 | 13 | 8 |
| Fond du Lac | A | 18 | 16 | 5 |
| Vernon | A | 17 | 7 | 8 |
| Monroe | A | 14 | 6 | 5 |
| Racine | A | 12 | 5 | 4 |
More Counties in Wisconsin
Frequently Asked Questions
How many FEMA disaster declarations does Waukesha County, WI have?
Waukesha County, WI has 7 federal disaster declarations on FEMA record (1969–2025). The 5 most recent are: Severe Storms, Straight-Line Winds, Flooding, and Mudslides (declared Sep 11, 2025, DR-4892); Hurricane Katrina Evacuation (declared Sep 13, 2005, DR-3249); Severe Storms & Flooding (declared Oct 7, 1986, DR-775); Severe Storms (declared Aug 14, 1986, DR-770); Severe Storms, Icing, Wind & Flooding (declared Mar 23, 1976, DR-496). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Waukesha County, WI?
Waukesha County is graded A (composite score 19/100, low risk). It ranks #268 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 Waukesha County?
20 NFIP flood insurance claims have been filed in Waukesha County, WI, totaling $979,765 in payouts. The average claim is $48,988. Source: FEMA FimaNfipClaims v2 dataset.
Has Waukesha County, WI had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Waukesha County was Severe Storms, Straight-Line Winds, Flooding, and Mudslides on Sep 11, 2025 (DR-4892). The county has 7 declared disasters in the OpenFEMA record covering 1969–2025.
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.