Social Vulnerability Index
Approximately 37.1% of U.S. counties have an equal or lower overall SVI ranking.
Higher percentiles indicate greater relative social vulnerability within the CDC SVI framework. CDC SVI documentation
Disaster Data / States / Idaho / Custer County
CountyCuster County recorded 5 federal disaster and emergency declarations since FY2000 (through FY2025): 3 major disasters, 2 emergencies, and 0 fire-management declarations. Its most common hazard is biological.
Highlighted: Custer County, ID
Totals: FY2000–FY2025 · Page last rebuilt Sep 12, 2026 · the current in-progress fiscal year is not included in totals
The federal disaster record for Custer County runs between 2000 and 2020, covering 5 declarations in all. Its most recent major disaster declaration was Covid-19 Pandemic in 2020. The hazards behind these declarations were most often biological, fire, and flood. Since 2000, FEMA has obligated $892,598 in Public Assistance funding to the jurisdiction, most of it for roads and bridges.
Historical declarations show what has happened here. These national datasets add context about underlying natural-hazard risk and community vulnerability.
Approximately 37.1% of U.S. counties have an equal or lower overall SVI ranking.
Higher percentiles indicate greater relative social vulnerability within the CDC SVI framework. CDC SVI documentation
The NRI combines expected annual loss, social vulnerability, and community resilience to describe relative natural-hazard risk. FEMA NRI documentation
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 |
|---|---|---|
| Roads and bridges(C) | 8 | $738,064 |
| Water control facilities(D) | 1 | $52,016 |
| Utilities(F) | 2 | $48,985 |
| Management costs(Z) | 4 | $33,991 |
| Emergency protective measures(B) | 1 | $16,976 |
| Debris removal(A) | 1 | $2,565 |
| All categories | 17 | $892,597 |
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 9-year scale. Typical wait to the first obligation here: about 192 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.
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.
| Program | Projects | Federal share obligated |
|---|---|---|
| Legislative Pre-Disaster Mitigation(LPDM) | 2 | $800,177 |
| Hazard Mitigation Grant Program(HMGP) | 1 | $117,167 |
Every local hazard mitigation plan must document previous occurrences of each hazard. Here is that record for Custer County, sourced to OpenFEMA and refreshed weekly. Copy it straight into your plan.
| Hazard | Date | FEMA declaration | Type |
|---|---|---|---|
| Biological | Apr 9, 2020 | DR-4534-ID | DR |
| Biological | Mar 13, 2020 | EM-3467-ID | EM |
| Flood | Aug 27, 2017 | DR-4333-ID | DR |
| Hurricane | Sep 13, 2005 | EM-3244-ID | EM |
| Fire | Sep 1, 2000 | DR-1341-ID | DR |
DR = Major disaster (Stafford Act) · EM = Emergency declaration · FM = Fire management assistance
Showing 5 declarations
| Date | Number | Type | Hazard | Title |
|---|---|---|---|---|
| Apr 9, 2020 | DR-4534-ID | DR | Biological | Covid-19 Pandemic |
| Mar 13, 2020 | EM-3467-ID | EM | Biological | Covid-19 |
| Aug 27, 2017 | DR-4333-ID | DR | Flood | Flooding, Landslides, And Mudslides |
| Sep 13, 2005 | EM-3244-ID | EM | Hurricane | Hurricane Katrina |
| Sep 1, 2000 | DR-1341-ID | DR | Fire | Wildfires |
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 Idaho'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.
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.