South Dakota

Natural Hazard Loss Profile

Expected annual loss across the 18 natural hazards in FEMA's National Risk Index. Life safety is expressed in fatality-equivalents, combining expected deaths and injuries. Property loss counts building damage only, not agriculture.

These figures cover natural hazards only. Structure fire, EMS, and motor vehicle incidents are not in the National Risk Index, so this is not an all-cause life safety measure. For South Dakota, the largest single contributor is Cold Wave, 57% of the life-safety total.

South Dakota carries an expected 22 natural hazard fatality-equivalents and $392.4M in building loss per year. Ranks compare the 50 states. Computed from census tract data covering every resident, independent of fire department boundaries.

Loss Breakdown

Total expected annual loss: $768,341,182 per year. Life safety is shown here in dollars, at FEMA's $13.7M value of statistical life, so the three shares sum to the total.

Agriculture is 10% of expected annual loss in South Dakota, so total loss overstates property loss here. The property figure above counts building loss only.

Hazards Ranked Two Ways

The hazard that threatens people is often not the hazard that destroys buildings. Both columns cover the same 18 hazards over the same year.

County Risk Map

Shaded by quintile across counties in this state. Click any county for its full profile.

Fire Service Profile

Department composition covers the 260 departments registered in NERIS Public for South Dakota. Departments that have not registered are not counted. The mix is computed over the departments NERIS registers to South Dakota; departments based elsewhere that respond into it are counted in the total above but not in the mix. Station coverage divides census population by registered stations; department service areas overlap, so their populations are not summed.

County Rankings

Counties in South Dakota ranked by risk. Click column headers to sort. Click a county to see its departments.

NRI Rating is from FEMA's National Risk Index, which measures community risk across 18 natural hazards using expected annual losses, social vulnerability, and community resilience. Life-Safety Loss uses FEMA's Value of Statistical Life ($13.7M per expected fatality) to estimate annual risk to human life.

Department and station counts are derived from boundaries self-reported through NERIS Public and may not reflect current service areas. A department serving several counties is counted in each, so the Departments column adds up to more than the statewide department total. Risk metrics are computed from census tract data and are not affected by boundary accuracy. See full methodology.

Risk Snapshot

FEMA Disaster Declarations