Disaster Data / States / Wisconsin / Waukesha County
CountyWaukesha County, Wisconsin
Waukesha County recorded 9 federal disaster and emergency declarations since FY2000 (through FY2025): 5 major disasters, 4 emergencies, and 0 fire-management declarations. Its most common hazard is severe storm.
The federal disaster record for Waukesha County runs between 2000 and 2025, covering 9 declarations in all. Its most recent major disaster declaration was Severe Storms, Straight-Line Winds, Flooding, And Mudslides in 2025. The hazards behind these declarations were most often severe storm, biological, and snowstorm. Since 2000, FEMA has obligated about $6.7 million in Public Assistance funding to the jurisdiction, most of it for emergency protective measures.
Highlighted: Waukesha County, WI
Federal Public Assistance by category
Federal share obligated to this jurisdiction under FEMA Public Assistance since 2000, grouped by damage category. Figures are rounded to the nearest dollar and reflect obligations, which may change as projects close out.
| Category | Projects | Federal share obligated |
|---|---|---|
| Emergency protective measures(B) | 178 | $5,007,947 |
| Roads and bridges(C) | 48 | $962,863 |
| Debris removal(A) | 23 | $270,391 |
| Parks and recreation(G) | 13 | $215,062 |
| Utilities(F) | 8 | $159,297 |
| Water control facilities(D) | 1 | $100,890 |
| Buildings and equipment(E) | 10 | $17,097 |
| Management costs(Z) | 1 | $2,026 |
| All categories | 282 | $6,735,573 |
Most common hazards
- Severe Storm 3
- Biological 2
- Snowstorm 2
- Flood 1
- Hurricane 1
Previous occurrences, for your mitigation plan
Every local hazard mitigation plan must document previous occurrences of each hazard. Here is that record for Waukesha County, sourced to OpenFEMA and refreshed weekly. Copy it straight into your plan.
| Hazard | Date | FEMA declaration | Type |
|---|---|---|---|
| Flood | Sep 11, 2025 | DR-4892-WI | DR |
| Biological | Apr 4, 2020 | DR-4520-WI | DR |
| Biological | Mar 13, 2020 | EM-3454-WI | EM |
| Severe Storm | Jun 14, 2008 | DR-1768-WI | DR |
| Snowstorm | Mar 19, 2008 | EM-3285-WI | EM |
| Hurricane | Sep 13, 2005 | EM-3249-WI | EM |
| Severe Storm | Jun 18, 2004 | DR-1526-WI | DR |
| Snowstorm | Jan 24, 2001 | EM-3163-WI | EM |
| Severe Storm | Jun 24, 2000 | DR-1332-WI | DR |
Every declaration on record
DR = Major disaster (Stafford Act) · EM = Emergency declaration · FM = Fire management assistance
Showing 9 declarations
| Date | Number | Type | Hazard | Title |
|---|---|---|---|---|
| Sep 11, 2025 | DR-4892-WI | DR | Flood | Severe Storms, Straight-Line Winds, Flooding, And Mudslides |
| Apr 4, 2020 | DR-4520-WI | DR | Biological | Covid-19 Pandemic |
| Mar 13, 2020 | EM-3454-WI | EM | Biological | Covid-19 |
| Jun 14, 2008 | DR-1768-WI | DR | Severe Storm | Severe Storms, Tornadoes, And Flooding |
| Mar 19, 2008 | EM-3285-WI | EM | Snowstorm | Record Snow And Near Record Snow |
| Sep 13, 2005 | EM-3249-WI | EM | Hurricane | Hurricane Katrina Evacuation |
| Jun 18, 2004 | DR-1526-WI | DR | Severe Storm | Severe Storms And Flooding |
| Jan 24, 2001 | EM-3163-WI | EM | Snowstorm | Snow |
| Jun 24, 2000 | DR-1332-WI | DR | Severe Storm | Severe Storms, Tornadoes, And Flooding |
How these numbers are built
Drawn from FEMA's OpenFEMA Disaster Declarations Summaries, rebuilt each week. A declaration is counted here once for each designated area it names, so a single disaster covering many localities is counted in each one. For that reason these jurisdiction counts do not sum to Wisconsin's statewide total. This page counts declarations that named this jurisdiction as a designated area. Totals cover complete fiscal years (Oct 1 to Sep 30); the in-progress year may appear in the most-recent list but is not counted in the totals. Uses OpenFEMA data but is not endorsed by or affiliated with FEMA.