Natural Disasters in Arnold, CA

Hazard risk, disaster history, and FEMA data

Natural Hazard Risk

Source: FEMA National Risk Index

Risk Score

86.6

Relatively Moderate

Expected Annual Loss

84.6

Score (0-100)

Social Vulnerability

57.9

Score (0-100)

Community Resilience

39.5

Score (0-100)

Top Hazard Risks

Wildfire99.5Drought98.3Landslide96.6

Hazard	Risk Score
Wildfire	99.5
Drought	98.3
Landslide	96.6
Winter Weather	91.6
Heat Wave	84.1
Earthquake	76.7
Volcanic Activity	59.3
Lightning	56.1
Avalanche	35.1
Strong Wind	9.8
Tornado	8.0
Hail	7.4

Scores range from 0 (lowest risk) to 100 (highest risk) relative to all U.S. communities. Data from FEMA National Risk Index.

Disaster Declarations

Source: FEMA OpenFEMA

Total Declarations

Most Recent

Fire

Sep 2025

Most Common Type

Severe Storm

8 declarations

Date	Type	Declaration
Sep 3, 2025	Fire	2-7 FIRE
Apr 3, 2023	Severe Storm	SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES
Mar 10, 2023	Flood	SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Jan 14, 2023	Flood	SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Mar 22, 2020	Biological	COVID-19 PANDEMIC
Mar 13, 2020	Biological	COVID-19
May 1, 2019	Severe Storm	SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Apr 1, 2017	Flood	SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES
Mar 16, 2017	Flood	SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES
Feb 14, 2017	Severe Storm	SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES
Sep 22, 2015	Fire	VALLEY FIRE AND BUTTE FIRE
Sep 10, 2015	Fire	BUTTE FIRE
Mar 8, 2010	Severe Storm	SEVERE WINTER STORMS, FLOODING, AND DEBRIS AND MUD FLOWS
Jun 5, 2006	Severe Storm	SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Sep 13, 2005	Hurricane	HURRICANE KATRINA EVACUATION
Sep 3, 2004	Fire	CA-PATTISON FIRE-09-03-2004
Aug 7, 2004	Fire	CA-CALAVERAS COMPLEX-08-07-2004
Feb 9, 1998	Severe Storm	SEVERE WINTER STORMS AND FLOODING
Jan 4, 1997	Severe Storm	SEVERE STORMS, FLOODING, MUD AND LANDSLIDES
Mar 12, 1995	Severe Storm	SEVERE WINTER STORMS, FLOODING LANDSLIDES, MUD FLOW

Showing 20 of 23 declarations

Individual Assistance

Source: FEMA Housing Assistance

Total IA Registrations

604

Total IA Distributed

$2,558,801

Repair/Replace

$1,802,817

Rental Assistance

$239,213

Disaster	Registrations	Total IA $	Avg Damage
DR-4240	546	$2,441,503	$89,865
DR-4683	56	$100,839	$1,224
DR-4482	2	$16,458	—

Individual and household assistance for homeowners and renters affected by federally declared disasters.

Flood Insurance (NFIP)

Source: FEMA NFIP

Total Claims

Total Claims Paid

$2,253,391

Avg Claim Payout

$30,451

County-level NFIP data from FEMA National Flood Insurance Program.

Disaster Recovery Spending

Source: FEMA Public Assistance

Total Federal Spending

$21,759,554

Disasters with PA

Total Projects

204

Disaster	Type	Projects	Federal $
DR-4240	Fire	29	$12,478,550
DR-4683	Severe Storm(s)	48	$1,996,420
DR-4482	Biological	11	$1,846,203
DR-4301	Severe Storm(s)	19	$1,634,276
DR-4308	Flood	19	$1,170,910
DR-4699	Severe Storm(s)	12	$947,680
DR-1646	Severe Storm(s)	44	$887,542
DR-4431	Winter Storm	19	$718,866
DR-1884	Severe Storm(s)	2	$67,963
DR-4305	Flood	1	$11,144

Hazard Mitigation

Source: FEMA Hazard Mitigation Assistance

Mitigation Projects

Federal Funding

$8,107,449

Properties Protected

Avg Benefit-Cost Ratio

3.44

BCR

Top Mitigation Project Types

Project Type	Projects	Federal $
91.3: Local Multihazard Mitigation Plan - UPDATE	3	$74,126
300.6: Vegetation Management - Erosion	1	$0
400.3: Utility Protective Measures (Wildfire)	1	$3,411,750
400.1: Utility Protective Measures (Electric, Gas, etc.)	1	$455,776
91.4: Local Multijurisdictional Multihazard Mitigation Plan - NEW	1	$62,325

Federally funded projects to reduce future disaster risk. Only includes completed or obligated projects.

Arnold has a relatively moderate overall natural hazard risk rating according to FEMA's National Risk Index. The top hazard risks are wildfire, drought, landslide. The area has had 23 federal disaster declarations. The most common disaster type is severe storm (8 declarations). 74 flood insurance claims have been filed in the area. FEMA has obligated $21,759,554 in public assistance recovery funding. $2,558,801 has been distributed in individual assistance to disaster-affected residents. 12 hazard mitigation projects have been funded to reduce future risk.