Rio Arriba County, New Mexico
Natural disaster risk, federal disaster history and flood insurance facts.
Rio Arriba County, New Mexico has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 80% of US counties. It ranks 11th of 33 counties in New Mexico. The costliest hazards here are inland flooding, wildfires and lightning. FEMA estimates about $27 million a year in expected losses, or roughly $660 per resident. Since 1973 it has been included in 15 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in October 2026 (severe storms and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (147 policies). Since 1978, federal flood insurance has paid about $329,000 on 31 claims here.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Rio Arriba County
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Clear dry plants and debris within 5 feet of the house.
- Get home insurance quotes early; availability varies by area.
- Go indoors when you hear thunder.
- Use surge protectors for electronics.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 88.4 | $20M | ||
| Wildfire | 96.2 | $3M | ||
| Lightning | 94.6 | $1M | ||
| Earthquake | 79.4 | $954K | ||
| Drought | 70.4 | $326K | ||
| Cold wave | 30.5 | $265K | ||
| Heat wave | 30.2 | $85K | ||
| Landslide | 95.0 | $78K | ||
| Hail | 27.5 | $65K | ||
| Strong wind | 12.7 | $62K | ||
| Tornado | 11.7 | $53K | ||
| Winter weather | 47.1 | $36K | ||
| Ice storm | 9.2 | $3K | ||
| Avalanche | 41.8 | $179 |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very high and community resilience is very low in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Rio Arriba County. 2020s bar runs to November 2026.
By type
Most recent
Show all 15
New Mexico also had 42 statewide declarations that did not name single counties.
Storm history since 1955
Tornado risk by county ›The National Weather Service has logged 121 storm reports in Rio Arriba County since 1955, with 3 deaths and 3 injuries and about $6.5 million in reported damage. The strongest on record here was an EF1 tornado on September 29, 2014 near Monero.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Sep 29, 2014 | EF1 | Monero | 0 / 0 |
| Sep 29, 1998 | F0 | Nutrias | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Aug 22, 2016 | Flash Flood | Hernandez | $2M |
| Jul 7, 2015 | Flash Flood | Canones | $1M |
| Sep 15, 2013 | Flash Flood | Santa Clara Pueblo | $500K |
| Jun 20, 2024 | Flash Flood | Espanola | $500K |
| Jul 7, 1998 | Flash Flood | Espanola | $300K |
| Jul 14, 2014 | Flash Flood | El Llano | $300K |
Source: NOAA Storm Events Database, county-based reports through Aug 29, 2025. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Flood insurance in Rio Arriba County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Rio Arriba County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 19,862 housing units.
Compare in New Mexico
All 33 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Bernalillo County | Inland flooding | |
| Doña Ana County | Inland flooding | |
| Santa Fe County | Inland flooding | |
| Sandoval County | Inland flooding | |
| San Juan County | Inland flooding | |
| Valencia County | Inland flooding | |
| Lea County | Inland flooding | |
| McKinley County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Santa Fe County | 8 | |
| Sandoval County | 20 | |
| San Juan County | 10 | |
| Taos County | 8 | |
| Los Alamos County | 8 | |
| Archuleta County, CO | 6 | |
| Conejos County, CO | 5 | |
| Mora County | 18 |
Common questions about Rio Arriba County
What is the biggest natural hazard in Rio Arriba County?
Inland flooding has the highest expected yearly losses in Rio Arriba County, about $20.3 million a year in FEMA's estimate. Wildfire is second at $3.2 million.
How many federal disasters has Rio Arriba County had?
Rio Arriba County has been included in 15 federal disaster or emergency declarations for natural events since 1973, including 9 major disasters. The most recent was Severe Storms and Flooding in October 2026.
Is Rio Arriba County a high-risk place to live?
Its overall rating is Relatively Low, 11th highest of 33 in New Mexico. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Rio Arriba County?
Standard home insurance does not cover flooding. About 1 in 143 homes in Rio Arriba County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Rio Arriba County had?
NOAA records list 2 tornadoes in Rio Arriba County since 1950. The strongest was an EF1 tornado on September 29, 2014 near Monero. The weather service has also logged 41 hail reports and 45 floods here.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.