Natural Disasters in Rio Oso, CA

Hazard risk, disaster history, and FEMA data

Natural Hazard Risk

Source: FEMA National Risk Index

Risk Score

83.7

Relatively Moderate

Expected Annual Loss

81.9

Score (0-100)

Social Vulnerability

57.3

Score (0-100)

Community Resilience

41.7

Score (0-100)

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

Disaster History & Federal Spending

Source: FEMA

Total Declarations

20

Public Assistance

$10.3M

Individual Assistance

$102K

Most Common Type

Severe Storm

7 declarations

DisasterTypeDatePA $IA $
Severe Winter Storms, Tornadoes, Flooding, Landslides, and Mudslides →Severe StormApr 2024$315K—
Severe Winter Storms, Flooding, Landslides, and Mudslides →FloodJan 2023$640K—
Severe Winter Storms, Flooding, and Mudslides →FloodJan 2023——
Covid-19 Pandemic →BiologicalMar 2020$485K$102K
Covid-19 →BiologicalMar 2020——
Severe Winter Storms, Flooding, and Mudslides →FloodApr 2017$4.9M—
Severe Winter Storms, Flooding, and Mudslides →Severe StormFeb 2017$1.7M—
Potential Failure of the Emergency Spillway at Oroville Lake →Dam/Levee BreakFeb 2017——
Severe Storms, Flooding, Mudslides, and Landslides →Severe StormFeb 2006$2.3M—
Hurricane Katrina Evacuation →HurricaneSep 2005——
Severe Winter Storms and Flooding →Severe StormFeb 1998——
Severe Storms, Flooding, Mud and Landslides →Severe StormJan 1997——
Severe Winter Storms, Flooding Landslides, Mud Flow →Severe StormMar 1995——
Severe Winter Storms, Flooding, Landslides, Mud Flows →Severe StormJan 1995——
Severe Freeze →FreezingFeb 1991——
Severe Storms & Flooding →FloodFeb 1986——
Coastal Storms, Floods, Slides & Tornadoes →Coastal StormFeb 1983——
Drought →DroughtJan 1977——
Severe Storms & Flooding →FloodFeb 1970——
Heavy Rains & Flooding →FloodDec 1964——

Showing 20 of 22 disasters

PA = FEMA Public Assistance (infrastructure recovery). IA = Individual Assistance (homeowner/renter aid).

Flood Insurance (NFIP)

Source: FEMA NFIP

Total Claims

199

Total Claims Paid

$3,046,665

Avg Claim Payout

$15,310

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

Hazard Mitigation

Source: FEMA Hazard Mitigation Assistance

Mitigation Projects

9

Federal Funding

$2,873,116

Properties Protected

1

Avg Benefit-Cost Ratio

64.30

BCR

Top Mitigation Project Types

Project TypeProjectsFederal $
91.1: Local Multihazard Mitigation Plan2$120,000
404.1: Localized Flood Control System to Protect Critical Facility2$2,469,380
601.1: Generators1$150,000
403.6: Aquifer Storage and Recovery (ASR)1$0
91.5: Local Multijurisdictional Multihazard Mitigation Plan - UPDATE1$84,986

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

Rio Oso has a relatively moderate 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 severe storm (7 declarations). 199 flood insurance claims have been filed in the area. FEMA has obligated $10,287,465 in public assistance recovery funding. $101,942 has been distributed in individual assistance to disaster-affected residents. 9 hazard mitigation projects have been funded to reduce future risk.