Waller County
Texas — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 70th
Waller County faces low composite natural disaster risk (NRI Risk Index score 70.3, 70th national percentile), driven primarily by drought and tornado 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
| Drought | High | 25.80 / yr | $2M |
| Tornado | High | 0.42 / yr | $6M |
| Hurricane | Medium | 0.14 / yr | $3M |
| Strong Wind | Medium | 1.61 / yr | $952K |
| Cold Wave | Medium | 0.58 / yr | $2M |
| Wildfire | Low | 0.00 / yr | $150K |
| Heat Wave | Low | 12.69 / yr | $756K |
| Lightning | Medium | 69.08 / yr | $363K |
| Riverine Flood | Low | 0.79 / yr | $9M |
| Ice Storm | Medium | 0.85 / yr | $137K |
| Hail | Low | 2.57 / yr | $189K |
| Earthquake | Very Low | 0.00 / yr | $53K |
| Landslide | Very Low | 0.05 / yr | $26 |
| Winter Weather | Very Low | 1.53 / yr | $6K |
| 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 Waller County?
Waller County has a composite FEMA National Risk Index score of 70.3 out of 100, placing it in the Low category and the 70th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Waller County?
The three highest-rated hazards are Drought (High, $2M EAL), Tornado (High, $6M EAL), Hurricane (Medium, $3M EAL). These account for most of the county's expected annual losses.
How does Waller County compare to other Texas counties?
Waller County ranks #81 of 254 Texas 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. Waller County's $24M EAL is a statistical average, not a guarantee for any specific year or address.