Natural Disasters in Lake Oswego, OR

Hazard risk, disaster history, and FEMA data

Natural Hazard Risk

Source: FEMA National Risk Index

Risk Score

96.0

Relatively High

Expected Annual Loss

97.2

Score (0-100)

Social Vulnerability

12.9

Score (0-100)

Community Resilience

74.3

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

22

Public Assistance

$37.6M

Individual Assistance

$3.7M

Most Common Type

Severe Storm

7 declarations

DisasterTypeDatePA $IA $
Severe Winter Storms, Straight-line Winds, Landslides, and Mudslides →Severe StormApr 2024$1.8M—
Milo Mciver Fire →FireSep 2022——
Severe Winter Storm →Severe StormMay 2021$8.2M—
Wildfires and Straight-line Winds →FireSep 2020$2.2M$113K
Wildfires →FireSep 2020——
Clakamas County Fire Complex →FireSep 2020——
Riverside Fire →FireSep 2020——
Beachie Creek Lionshead Fire Complex →FireSep 2020——
Covid-19 Pandemic →BiologicalMar 2020$19.9M$3.5M
Covid-19 →BiologicalMar 2020——
Severe Winter Storms, Straight-line Winds, Flooding, Landslides, and Mudslides →Severe StormFeb 2016$2.2M—
36 Pit Fire →FireSep 2014——
Severe Winter Storm, Flooding, Mudslides, Landslides, and Debris Flows →Severe StormFeb 2011$1.8M—
Severe Winter Storm, Record and Near Record Snow →Severe StormMar 2009$852K—
Severe Storms, Flooding, Landslides, and Mudslides →Severe StormMar 2006$446K—
Hurricane Katrina Evacuation →Coastal StormSep 2005——
Severe Winter Storms →Severe StormFeb 2004$301K—
High Winds, Severe Storms and Flooding →FloodFeb 1996——
Earthquake →EarthquakeApr 1993——
Severe Storms, Snowmelt & Flooding →FloodJan 1974——

Showing 20 of 25 disasters

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

Flood Insurance (NFIP)

Source: FEMA NFIP

Total Claims

812

Total Claims Paid

$23,400,518

Avg Claim Payout

$28,818

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

Hazard Mitigation

Source: FEMA Hazard Mitigation Assistance

Mitigation Projects

31

Federal Funding

$6,835,604

Properties Protected

42

Avg Benefit-Cost Ratio

2.91

BCR

Top Mitigation Project Types

Project TypeProjectsFederal $
205.6: Structural Retrofitting/Rehabilitating Public Structures - Seismic7$3,242,821
200.1: Acquisition of Private Real Property (Structures and Land) - Riverine3$1,425,496
91.1: Local Multihazard Mitigation Plan2$88,757
103.1: Feasibility, Engineering and Design Studies2$167,626
202.1: Elevation of Private Structures - Riverine2$179,430

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

Lake Oswego has a relatively high overall natural hazard risk rating according to FEMA's National Risk Index. The top hazard risks are earthquake, heat wave, ice storm. The area has had 22 federal disaster declarations. The most common disaster type is severe storm (7 declarations). 812 flood insurance claims have been filed in the area. FEMA has obligated $37,624,076 in public assistance recovery funding. $3,658,086 has been distributed in individual assistance to disaster-affected residents. 31 hazard mitigation projects have been funded to reduce future risk.