Doña Ana County Disaster Risk
Doña Ana County, New Mexico
FEMA Risk Rating
Relatively High
National Percentile
96th
of 3,144 counties
State Rank
#1
of 33 (1 = highest risk)
Flood Risk
98th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively High
Higher than 98% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Moderate
Higher than 87% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 21% of US counties
Earthquake
Seismic activity and ground shaking risk
Moderate
Higher than 91% of US counties
Hurricane
Tropical cyclone and hurricane risk
Very Low
Higher than 37% of US counties
Risk Overview
About Natural Disaster Risk in Doña Ana County, New Mexico
Doña Ana faces the highest statewide risk
With a composite risk score of 96.09, Doña Ana County ranks as New Mexico's riskiest community and well above the national average for disaster exposure. The county's southern border location and Rio Grande valley geography create extreme vulnerability to multiple concurrent hazards.
Highest-risk county in New Mexico
Doña Ana County ranks first statewide for overall disaster risk, exceeding even Bernalillo County (94.40). The county's combination of seismic, flood, and wildfire threats creates a uniquely challenging risk landscape.
Riskier than any nearby county
Doña Ana's 96.09 score substantially exceeds Luna County (59.37) to the west and Sierra County to the north. The county stands apart regionally for its extreme composite risk profile.
Floods and earthquakes pose twin threats
Flood risk (98.38) reaches maximum severity in Doña Ana, driven by Rio Grande dynamics and monsoon exposure, while earthquake risk (91.22) reflects active fault lines throughout the county. Wildfire risk (86.58) and even modest hurricane risk (36.55) add secondary but real dangers.
Flood and earthquake insurance mandatory
Doña Ana residents must obtain both separate flood and earthquake insurance immediately—these threats are not covered by standard policies and losses often exceed expectations. Review and update coverage annually, as the county's extreme risk profile demands maximum protection.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Doña Ana County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Doña Ana County
Risk Verdict
Natural hazard exposure in Doña Ana County is notably high, placing it at the 96th percentile among all U.S. counties. Doña Ana County's elevated composite score reflects cumulative multi-hazard exposure; households should prepare for the county's two or three primary hazard types.
Hazard Breakdown
Flood risk is Doña Ana County's dominant natural hazard, ranked at the 98th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 91th percentile nationally. Additional tracked hazards include wildfire (87th percentile), hurricane (37th percentile), tornado (21th percentile).
Preparedness Context
With flood ranked as the primary hazard at the 98th percentile nationally, Doña Ana County households should build a go-bag that includes important documents, medications, and supplies to sustain the family for at least three days if evacuation is needed. Alongside flooding, earthquake exposure at the 91th percentile means households benefit from a multi-hazard preparedness plan rather than focusing on flood alone. A waterproof container for documents (insurance policies, ID, prescriptions) and a clear household communication plan for when phone networks are congested are the two highest-value low-cost preparedness steps for Doña Ana County households.
Regional Context
A composite score 37.2 points above the New Mexico state average puts Doña Ana County in a higher-risk category than most counties in the state.
Is your household prepared for Doña Ana County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Doña Ana County, NM?
What types of natural hazards affect Doña Ana County?
How does Doña Ana County risk compare to the New Mexico average?
Is Doña Ana County at risk for flooding?
How is natural disaster risk measured?
Why is Doña Ana County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.