Ottawa County
Oklahoma — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 76th
Ottawa County faces low composite natural disaster risk (NRI Risk Index score 76.0, 76th national percentile), driven primarily by ice storm and drought exposure. Expected annual loss across all 18 hazard types is $24M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Ice Storm | Very High | 1.19 / yr | $2M |
| Drought | High | 18.93 / yr | $3M |
| Strong Wind | High | 6.46 / yr | $1M |
| Heat Wave | Medium | 18.79 / yr | $1M |
| Riverine Flood | Medium | 4.39 / yr | $12M |
| Landslide | Low | 0.11 / yr | $7K |
| Tornado | Medium | 0.46 / yr | $2M |
| Winter Weather | Medium | 10.26 / yr | $84K |
| Wildfire | Low | 0.00 / yr | $80K |
| Cold Wave | Low | 2.05 / yr | $1M |
| Earthquake | Low | 0.00 / yr | $321K |
| Hail | Low | 7.78 / yr | $210K |
| Lightning | Low | 55.50 / yr | $173K |
| Hurricane | Very Low | 0.01 / yr | $13K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | 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 Ottawa County?
Ottawa County has a composite FEMA National Risk Index score of 76.0 out of 100, placing it in the Low category and the 76th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Ottawa County?
The three highest-rated hazards are Ice Storm (Very High, $2M EAL), Drought (High, $3M EAL), Strong Wind (High, $1M EAL). These account for most of the county's expected annual losses.
How does Ottawa County compare to other Oklahoma counties?
Ottawa County ranks #21 of 77 Oklahoma 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. Ottawa County's $24M EAL is a statistical average, not a guarantee for any specific year or address.