Union County, South Dakota
Natural Hazard Risk Assessment — Population: 16,799
37.1NRI
Very Low
Overall Risk Rating
👥
Population
16,799
🏠
Building Value
$6.0B
💰
Annual Hazard Loss
$16.3M
⚠️
Hazards Tracked
13
Natural Hazard Risk Profile
🔥
Relatively LowWildfire
Annual Loss$447K
Risk Score77.6
⛄
Relatively ModerateWinter Weather
Annual Loss$256K
Risk Score77.5
☀️
Relatively ModerateDrought
Annual Loss$951K
Risk Score74.6
🧊
Relatively ModerateHail
Annual Loss$917K
Risk Score73.5
🌪️
Relatively ModerateTornado
Annual Loss$3.4M
Risk Score69.2
❄️
Relatively ModerateIce Storm
Annual Loss$272K
Risk Score67.7
🌊
Relatively LowRiverine Flooding
Annual Loss$8.5M
Risk Score47.5
⛰️
Very LowLandslide
Annual Loss$670
Risk Score35.8
Show all 13 hazards
🥶
Relatively LowCold Wave
Annual Loss$734K
Risk Score34.8
🌡️
Very LowHeat Wave
Annual Loss$234K
Risk Score33.8
⚡
Relatively LowLightning
Annual Loss$164K
Risk Score32.1
💨
Relatively LowStrong Wind
Annual Loss$346K
Risk Score26.0
🏔️
Very LowEarthquake
Annual Loss$28K
Risk Score16.6
Union County vs. National Average
🎯 Overall Risk
37.1-11.6 vs avg
National avg: 48.7
🔥 Wildfire Risk
77.6+28.9 vs avg
National avg: 48.7
👥 Social Vulnerability
10.6-38.6 vs avg
National avg: 49.2
🛡️ Community Resilience
48.3-0.4 vs avg
National avg: 48.7
Community Profile
Social Vulnerability
10.6
Very LowHigher scores indicate greater social vulnerability to natural hazards.
Community Resilience
48.3
Relatively ModerateHigher scores indicate better ability to prepare for, adapt to, and recover from hazards.
Frequently Asked Questions
Data from FEMA National Risk Index. For informational purposes only. Consult local authorities for property-specific risk.