Natural Disasters in Diablo Grande, CA

Hazard risk, disaster history, and FEMA data

Natural Hazard Risk

Source: FEMA National Risk Index

Risk Score

96.9

Relatively High

Expected Annual Loss

97.0

Score (0-100)

Social Vulnerability

32.0

Score (0-100)

Community Resilience

33.9

Score (0-100)

Top Hazard Risks

Drought99.8Earthquake98.5Heat Wave96.3

Hazard	Risk Score
Drought	99.8
Earthquake	98.5
Heat Wave	96.3
Wildfire	95.0
Lightning	91.0
Landslide	86.7
Volcanic Activity	78.2
Hail	52.2
Winter Weather	36.8
Strong Wind	28.3
Tornado	27.8
Avalanche	5.7

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

Severe Storm

Apr 2023

Most Common Type

Flood

6 declarations

Date	Type	Declaration
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
Jan 9, 2023	Flood	SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES
Aug 22, 2020	Fire	WILDFIRES
Aug 21, 2020	Fire	SCU LIGTNING COMPLEX FIRE
Mar 22, 2020	Biological	COVID-19 PANDEMIC
Mar 13, 2020	Biological	COVID-19
Apr 1, 2017	Flood	SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES
Mar 13, 2007	Freezing	SEVERE FREEZE
Jun 5, 2006	Severe Storm	SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Sep 13, 2005	Hurricane	HURRICANE KATRINA EVACUATION
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
Feb 11, 1991	Freezing	SEVERE FREEZE
Feb 9, 1983	Coastal Storm	COASTAL STORMS, FLOODS, SLIDES & TORNADOES
Jan 20, 1977	Drought	DROUGHT
Jan 26, 1969	Flood	SEVERE STORMS & FLOODING
Dec 24, 1964	Flood	HEAVY RAINS & FLOODING

Individual Assistance

Source: FEMA Housing Assistance

Total IA Registrations

Total IA Distributed

$76,015

Repair/Replace

$36,652

Rental Assistance

$3,976

Disaster	Registrations	Total IA $	Avg Damage
DR-4569	1	N/A	—
DR-4558	17	$41,364	$24,159
DR-4482	6	$34,652	—

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

Flood Insurance (NFIP)

Source: FEMA NFIP

Total Claims

242

Total Claims Paid

$4,678,560

Avg Claim Payout

$19,333

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

Disaster Recovery Spending

Source: FEMA Public Assistance

Total Federal Spending

$27,500,755

Disasters with PA

Total Projects

165

Disaster	Type	Projects	Federal $
DR-4482	Biological	33	$9,215,524
DR-4683	Severe Storm(s)	26	$7,009,136
DR-4308	Flood	36	$5,228,277
DR-4699	Severe Storm(s)	12	$4,024,474
DR-4558	Wildfire	9	$1,258,485
DR-1646	Severe Storm(s)	49	$764,859

Hazard Mitigation

Source: FEMA Hazard Mitigation Assistance

Mitigation Projects

Federal Funding

$391,703

Avg Benefit-Cost Ratio

2.53

BCR

Top Mitigation Project Types

Project Type	Projects	Federal $
403.3: Stormwater Management - Flapgates/Floodgates	1	$166,703
91.4: Local Multijurisdictional Multihazard Mitigation Plan - NEW	1	$225,000
403.6: Aquifer Storage and Recovery (ASR)	1	$0

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

Diablo Grande has a relatively high overall natural hazard risk rating according to FEMA's National Risk Index. The top hazard risks are drought, earthquake, heat wave. The area has had 20 federal disaster declarations. The most common disaster type is flood (6 declarations). 242 flood insurance claims have been filed in the area. FEMA has obligated $27,500,755 in public assistance recovery funding. $76,015 has been distributed in individual assistance to disaster-affected residents. 3 hazard mitigation projects have been funded to reduce future risk.