Riley County
Kansas — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 58th
Riley County faces low composite natural disaster risk (NRI Risk Index score 58.5, 58th national percentile), driven primarily by winter weather and ice storm exposure. Expected annual loss across all 18 hazard types is $29M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Winter Weather | High | 11.79 / yr | $862K |
| Ice Storm | High | 1.01 / yr | $2M |
| Wildfire | Medium | 0.00 / yr | $2M |
| Tornado | Medium | 0.54 / yr | $7M |
| Landslide | Low | 0.24 / yr | $28K |
| Heat Wave | Medium | 13.16 / yr | $2M |
| Lightning | Medium | 48.77 / yr | $594K |
| Riverine Flood | Low | 1.29 / yr | $13M |
| Strong Wind | Medium | 5.54 / yr | $992K |
| Hail | Low | 8.73 / yr | $478K |
| Earthquake | Very Low | 0.00 / yr | $144K |
| Drought | Very Low | 7.20 / yr | $17K |
| Cold Wave | Very Low | 3.05 / yr | $184K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Riley County?
Riley County has a composite FEMA National Risk Index score of 58.5 out of 100, placing it in the Low category and the 58th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Riley County?
The three highest-rated hazards are Winter Weather (High, $862K EAL), Ice Storm (High, $2M EAL), Wildfire (Medium, $2M EAL). These account for most of the county's expected annual losses.
How does Riley County compare to other Kansas counties?
Riley County ranks #16 of 105 Kansas counties for overall natural disaster risk, with a low rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Riley County's $29M EAL is a statistical average, not a guarantee for any specific year or address.