Assumption Parish
Louisiana — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 70th
Assumption Parish faces low composite natural disaster risk (NRI Risk Index score 70.3, 70th national percentile), driven primarily by drought and hurricane exposure. Expected annual loss across all 18 hazard types is $20M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Drought | High | 21.69 / yr | $2M |
| Hurricane | High | 0.24 / yr | $11M |
| Coastal Flood | Medium | 3.69 / yr | $1M |
| Tornado | Medium | 0.24 / yr | $2M |
| Heat Wave | Low | 14.33 / yr | $554K |
| Lightning | Low | 89.34 / yr | $172K |
| Cold Wave | Low | 0.74 / yr | $675K |
| Earthquake | Very Low | 0.00 / yr | $53K |
| Riverine Flood | Very Low | 0.25 / yr | $2M |
| Hail | Very Low | 1.07 / yr | $72K |
| Winter Weather | Very Low | 0.85 / yr | $13K |
| Strong Wind | Low | 0.88 / yr | $125K |
| Landslide | Very Low | 0.04 / yr | $40 |
| Ice Storm | Very Low | 0.06 / yr | $5K |
| Wildfire | Very Low | 0.00 / yr | $930 |
| Avalanche | 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 Assumption Parish?
Assumption Parish 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 Assumption Parish?
The three highest-rated hazards are Drought (High, $2M EAL), Hurricane (High, $11M EAL), Coastal Flood (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Assumption Parish compare to other Louisiana counties?
Assumption Parish ranks #32 of 64 Louisiana 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. Assumption Parish's $20M EAL is a statistical average, not a guarantee for any specific year or address.