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Nevada County, California

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Moderate overall risk
39th of 58highest risk in California
$81Mexpected losses a year
21federal declarations
1 in 500homes with flood insurance
Photo: U.S. Geological Survey, public domain

Nevada County, California has a moderate overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 90% of US counties. It ranks 39th of 58 counties in California. The costliest hazards here are inland flooding, wildfires and earthquakes. FEMA estimates about $81 million a year in expected losses, or roughly $789 per resident. Since 1964 it has been included in 21 federal disaster or emergency declarations for natural events (15 major disasters). The most recent was in April 2023 (severe winter storms, straight-line winds, flooding, landslides and mudslides). Fewer than 1 in 100 homes here carry federal flood insurance (115 policies). Since 1978, federal flood insurance has paid about $1.1 million on 63 claims here, including $442,000 for floods in 2017.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Nevada County

$37.4 million a yearExpected losses. Damaging events about once a year.
  • 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.
$32.4 million a yearExpected losses. Damaging events about once every 85 years.
  • Clear dry plants and debris within 5 feet of the house.
  • Get home insurance quotes early; availability varies by area.

Earthquake

Moderate
$7.3 million a yearExpected losses. Damaging events about once every 30 years.
  • Ask whether an older house is bolted to its foundation.
  • Consider separate earthquake insurance where risk is high.
HazardRatingScoreExpected loss a year
Inland floodingModerate89.9
$37M
WildfireHigh99.4
$32M
EarthquakeModerate92.1
$7M
AvalancheHigh89.5
$2M
Heat waveLow57.8
$517K
LightningModerate70.5
$492K
HailLow49.3
$246K
TornadoVery Low17.9
$194K
LandslideModerate95.5
$148K
Winter weatherModerate69.6
$124K
Strong windVery Low13.7
$108K
Volcanic activityVery Low58.0
$23

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 relatively moderate and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Nevada County. 2020s bar runs to November 2026.

By type

Fire7
Severe Storm7
Flood5
Drought1
Hurricane1

Most recent

Apr 3, 2023Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disaster
Mar 10, 2023Severe Winter Storms, Flooding, Landslides, and MudslidesEmergency
Jan 14, 2023Severe Winter Storms, Flooding, Landslides, and MudslidesMajor disaster
Aug 24, 2021WildfiresMajor disaster
Aug 22, 2020WildfiresMajor disaster
Aug 18, 2020Jones FireFire management
Oct 10, 2017WildfiresMajor disaster
Oct 9, 2017Lobo FireFire management
Apr 1, 2017Severe Winter Storms, Flooding, and MudslidesMajor disaster
Feb 14, 2017Severe Winter Storms, Flooding, and MudslidesMajor disaster
Show all 21
Aug 15, 2009Yuba FireFire management
Jun 5, 2006Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Feb 3, 2006Severe Storms, Flooding, Mudslides, and LandslidesMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Jan 4, 1997Severe Storms, Flooding, Mud and LandslidesMajor disaster
Mar 12, 1995Severe Winter Storms, Flooding Landslides, Mud FlowMajor disaster
Jan 10, 1995Severe Winter Storms, Flooding, Landslides, Mud FlowsMajor disaster
Sep 29, 1988WildfiresMajor disaster
Feb 21, 1986Severe Storms & FloodingMajor disaster
Jan 20, 1977DroughtEmergency
Dec 24, 1964Heavy Rains & FloodingMajor disaster

California also had 35 statewide declarations that did not name single counties.

Storm history since 1957

Tornado risk by county ›

The National Weather Service has logged 125 storm reports in Nevada County since 1957, with 1 death and 1 injury and about $6.9 million in reported damage. The strongest on record here was an EF1 tornado on October 22, 2012 near Wolf.

1tornadoes
18hail reports, largest 1.75 inches
4damaging thunderstorm winds
29floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Oct 22, 2012EF1Wolf0 / 0

Most damaging storms

DateTypeNearDamage
Feb 8, 2017FloodNevada City$4M
Jan 10, 2017Debris FlowBirchville$1M
Dec 31, 2005FloodNorden$1M
Jan 9, 2017Debris FlowSoda Spgs$480K
Jan 8, 2017Debris FlowNorden$480K
Mar 21, 2018FloodWolf$100K

Source: NOAA Storm Events Database, county-based reports through Apr 11, 2026. 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 Nevada County

Check your address flood zone ›
0.2%of homes have federal flood insurance (115 policies)
22.6%of homes in mapped high-risk flood zones are insured
$1.1 millionpaid on 63 flood claims since 1978
2017costliest year, with $442,412 paid

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 Nevada County

$621,800median home value (California $734,700, US $332,700)
1983median year homes were built (California 1976, US 1980)
42%of homes built before 1980, before many modern wind, quake and flood building rules
4.6%of homes are mobile homes, which are the least safe in tornadoes and high winds

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; 54,309 housing units.

Compare in California

All 58 ›
Largest countiesOverall riskTop hazard
Los Angeles CountyVery HighEarthquake
San Diego CountyVery HighInland flooding
Orange CountyVery HighEarthquake
Riverside CountyVery HighInland flooding
San Bernardino CountyVery HighInland flooding
Santa Clara CountyVery HighEarthquake
Alameda CountyVery HighEarthquake
Sacramento CountyHighInland flooding

Neighboring counties

CountyOverall riskDeclarations
Washoe County, NVHigh52
Placer CountyModerate24
Yuba CountyLow26
Sierra CountyVery Low14

Common questions about Nevada County

What is the biggest natural hazard in Nevada County?

Inland flooding has the highest expected yearly losses in Nevada County, about $37.4 million a year in FEMA's estimate. Wildfire is second at $32.4 million.

How many federal disasters has Nevada County had?

Nevada County has been included in 21 federal disaster or emergency declarations for natural events since 1964, including 15 major disasters. The most recent was Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides in April 2023.

Is Nevada County a high-risk place to live?

Its overall rating is Relatively Moderate, 39th highest of 58 in California. 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 Nevada County?

Standard home insurance does not cover flooding. About 1 in 500 homes in Nevada 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 Nevada County had?

NOAA records list 1 tornadoes in Nevada County since 1950. The strongest was an EF1 tornado on October 22, 2012 near Wolf. The weather service has also logged 18 hail reports and 29 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.