Disaster Data / States / Wisconsin / Rock County

County

Rock County, Wisconsin

Rock County recorded 8 federal disaster and emergency declarations since FY2000 (through FY2025): 4 major disasters, 4 emergencies, and 0 fire-management declarations. Its most common hazard is severe storm.

Highlighted: Rock County, WI

Totals: FY2000–FY2025 · Page last rebuilt Sep 12, 2026 · the current in-progress fiscal year is not included in totals

8
Declarations since FY2000
4
Major disasters (DR)
4
Emergencies (EM)
0
Fire management (FM)
Jun 2026
Most recent
$2.9M
Federal PA obligated (top: emergency protective measures)

The federal disaster record for Rock County runs between 2001 and 2020, covering 8 declarations in all. Its most recent major disaster declaration was Covid-19 Pandemic in 2020. The hazards behind these declarations were most often severe storm, biological, and snowstorm. Since 2000, FEMA has obligated about $2.9 million in Public Assistance funding to the jurisdiction, most of it for emergency protective measures.

Risk and vulnerability context

Historical declarations show what has happened here. These national datasets add context about underlying natural-hazard risk and community vulnerability.

County FIPS 55105
CDC / ATSDR

Social Vulnerability Index

2022 county-level SVI
29.9
overall percentile nationally

Approximately 29.9% of U.S. counties have an equal or lower overall SVI ranking.

Socioeconomic status21.8
Household characteristics52.6
Racial and ethnic minority status51.2
Housing type and transportation31.2

Higher percentiles indicate greater relative social vulnerability within the CDC SVI framework. CDC SVI documentation

FEMA

National Risk Index

December 2025
86.4
overall risk score
Relatively Moderate
Expected annual loss$73.3MRelatively Moderate
NRI social vulnerability18.4Very Low
Community resilience81.2Very High

The NRI combines expected annual loss, social vulnerability, and community resilience to describe relative natural-hazard risk. FEMA NRI documentation

About these measures: CDC Social Vulnerability Index and FEMA National Risk Index Social Vulnerability are separate measures built with different methods. They are shown side by side for context and should not be interpreted as equivalent scores.

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.

CategoryProjectsFederal share obligated
Emergency protective measures(B)68$1,852,004
Debris removal(A)11$358,468
Roads and bridges(C)28$314,018
Utilities(F)8$179,821
Parks and recreation(G)10$166,651
Water control facilities(D)1$43,312
Buildings and equipment(E)2$12,043
All categories128$2,926,317

Recovery funding, how fast it came

For each disaster, the wait from the declaration to the first federal obligation (amber), then the federal share obligating after that (teal), on a shared 4-year scale. Typical wait to the first obligation here: about 61 days. An obligation is the federal share committed to the recipient state, not funds disbursed to the locality, which comes later and is not shown.

DR-4923 2026$71K
57 days to first federal obligation
Covid-19 Pandemic 2020$637K
460 days to first federal obligation
DR-1966 2011$6K
66 days to first federal obligation
Severe Storms, Tornadoes, And Flooding 2008$1.7M
70 days to first federal obligation
Record Snow And Near Record Snow 2008$338K
23 days to first federal obligation
Snow 2001$178K
35 days to first federal obligation
Declared1 yr2 yr3 yr4 yr

Assistance to households (Individual Assistance)

FEMA Individual Assistance to households in this jurisdiction, combined across the Housing Assistance owner and renter programs. Valid registrations are households that applied within a designated Individual Assistance area; approved counts and dollars are the households FEMA found eligible under the Individuals and Households Program. Figures are self-reported and drawn from NEMIS through OpenFEMA, not audited, and Individual Assistance exists only for disasters where it was designated, so many jurisdictions show none.

2,332
valid registrations
1,629
households approved
$6,884,814
total IHP approved
Assistance typeApproved amount
Repair and replacement$3,388,737
Rental assistance$357,956
Other needs$3,132,795

Hazard mitigation, what has been funded here

Federal Hazard Mitigation Assistance obligated to this jurisdiction to reduce future disaster losses, across the FEMA mitigation programs. This is the record of past mitigation investment a local hazard mitigation plan documents. Figures are federal share obligated, reported through OpenFEMA and not audited, and are separate from the Public Assistance funding above.

$1,376,606
federal mitigation share
6
funded projects
14
properties mitigated
ProgramProjectsFederal share obligated
Hazard Mitigation Grant Program(HMGP)3$1,330,991
Pre-Disaster Mitigation(PDM)3$45,615

State declarations (governor)

Emergency declarations issued by the governor of this state, which are separate from and usually precede a federal declaration. A declaration is listed here when NOAA Storm Events recorded reports of the matched hazard in this jurisdiction while the order was in effect. That is evidence of local impact during a declared state emergency. It is not a statement that the governor named this jurisdiction in the order, since most state declarations apply statewide and name no localities at all. Hazard categories come from the order text. Damage figures are NOAA storm report estimates for this jurisdiction only, not the cost of the declaration.

5
state declarations with local storm evidence
18
statewide on record

Archive coverage for Wisconsin: 2019-present structured Governor archive; 2000-2018 not covered; early PDFs may require OCR

Source: state executive order archives collected by DisasterData Plus, joined to NOAA Storm Events. See the Plus overview for per-state coverage and method.

Most common hazards

Previous occurrences, for your mitigation plan

Every local hazard mitigation plan must document previous occurrences of each hazard. Here is that record for Rock County, sourced to OpenFEMA and refreshed weekly. Copy it straight into your plan.

HazardDateFEMA declarationType
BiologicalApr 4, 2020DR-4520-WIDR
BiologicalMar 13, 2020EM-3454-WIEM
Severe StormJun 14, 2008DR-1768-WIDR
SnowstormMar 19, 2008EM-3285-WIEM
Severe StormAug 26, 2007DR-1719-WIDR
HurricaneSep 13, 2005EM-3249-WIEM
Severe StormJun 18, 2004DR-1526-WIDR
SnowstormJan 24, 2001EM-3163-WIEM

Every declaration on record

DR = Major disaster (Stafford Act) · EM = Emergency declaration · FM = Fire management assistance

Showing 8 declarations

DateNumberTypeHazardTitle
Apr 4, 2020DR-4520-WIDRBiologicalCovid-19 Pandemic
Mar 13, 2020EM-3454-WIEMBiologicalCovid-19
Jun 14, 2008DR-1768-WIDRSevere StormSevere Storms, Tornadoes, And Flooding
Mar 19, 2008EM-3285-WIEMSnowstormRecord Snow And Near Record Snow
Aug 26, 2007DR-1719-WIDRSevere StormSevere Storms And Flooding
Sep 13, 2005EM-3249-WIEMHurricaneHurricane Katrina Evacuation
Jun 18, 2004DR-1526-WIDRSevere StormSevere Storms And Flooding
Jan 24, 2001EM-3163-WIEMSnowstormSnow
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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.

Cite this profile

Choose a citation style, then copy the formatted citation. This profile is derived from FEMA OpenFEMA data and is updated as the underlying Disaster Data build is refreshed.

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