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Increasing risk| 24% of properties are at riski

Flood risk is increasing for Oregon

As sea levels rise and and weather patterns change, flood risks will increase. Approximately 448,389 properties are already at risk in Oregon, and within 30 years, about 464,358 will be at risk.

Change in the number of properties at risk i

Places with highest 30-year risk growth (properties at risk)


Lincoln County


West Scio

Environmental Changes

Flood risks are increasing because of the environment.

A changing environment means higher seas, new weather patterns, and stronger storms. As the atmosphere warms, there is more evaporation and more water available when it rains.

A warmer atmosphere also means warmer oceans, which can intensify flooding from hurricanes and offshore storms. Sea level rise also increases coastal flood risks, as higher seas mean there's more water available when high tides and coastal storms cause flooding.

Learn more about the environmental factors increasing flood risk.

Select year of projection

Change in extreme rain events compared to 1980-2010 average. i

Source: NASA Earth Exchange Global Daily Downscaled Projections (NEX-GDDP).

Rise in inches, compared to 1980-2010 average. i

+5 in.

Place with highest sea level rise (inches)

14.4Grand Isle, LA
10.3Galveston Pier 21, TX
9.4Ocean City Inlet, MD
9.1New Canal Station, LA
8.7Lewisetta, VA
Source: Kopp et al, 2017. Evolving Understanding of Antarctic Ice‐Sheet Physics and Ambiguity in Probabilistic Sea‐Level Projections.

Temperatures in degrees Fahrenheit. Increase in comparison to the 1980-2010 average. i

Source: NOAA National Data Buoy Center and Schmidt et al, 2014., Configuration and assessment of the GISS ModelE2 contributions to the CMIP5 archive.

Score Map

Flood Factors across Oregon.

A property's Flood Factor is an indicator of its comprehensive flood risk, ranging from 1 (minimal) to 10 (extreme). Properties with higher Flood Factors are more likely to flood.

Learn more about the Flood Factor methodology.

Filter by Flood Factor:

Number of properties at risk by Flood Factor

Number of properties at risk by Flood Factor

Flood Risk Explorer

Flood risks vary by depth and likelihood

Deeper floods from major events, like hurricanes, are less likely to occur, but cause greater damage than more shallow flood events, like heavy rains.

Select a projected flood risk:

More likely to occurArrow right
Arrow leftMore properties impacted

Approx. properties have a 0.2% chance of some amount of water reaching their building in 2021.


Depth of flooding (feet)

Approx. properties have a 0.2% chance of some amount of water reaching their building in 2021.


Depth of flooding (feet)

Note: 31,224 properties in this area are protected by adaptation. While the above projections take into account this protection, risks may substantially increase in the event of adaptation failure.

National Flood Risks

Flooding is a national issue.

Across the United States, more than 16.1 million properties are already at substantial risk of flooding this year, and approximately 306.1K of those properties are in Oregon.

Total properties with substantial risk i

How flood risk will change in 30 years

Because of changes in the environment, more than 17.8 million properties will have substantial risk in 30 years. Oregon will see a 5.9% increase in the number of properties with substantial risk in the next 30 years.

30-year change in number of properties at substantial risk i

No data

Community Solutions

There are solutions to protect Oregon.

Communities that adapt to higher risks can limit damage and lower flood insurance costs. Oregon is already investing in flood risk reduction projects, but more may be needed. Learn more about solutions.

Known adaptation measures i
Properties protected by adaptation i

Top adaptation measures in Oregon:

Levee and marsh/wetland restoration

Green infrastructure is a cost-effective and sustainable flood management approach that gathers and removes water at its source.

  • Open Spaces
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    By providing space for managed flooding, communities can reduce the flood risks for homes and businesses. These spaces can include cemeteries, golf courses, and parks.

  • Marshes and Wetlands
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    Restoring or constructing new marsh or wetlands provides areas for water to be stored, therefore reducing flooding.

  • Rain Gardens and Bioswales
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    Rain gardens reduce flash flooding by collecting rainwater and allowing time for the water to be absorbed or carried away. Bioswales are larger but functionally similar, and usually a part of a larger stormwater drainage system.

  • Beach Dunes and Renourishment
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    Beaches and dunes work as natural walls to reduce the impact of storm surges. Adding sand to make beaches bigger helps limit coastal erosion and protect communities from flooding.

  • Natural Barriers
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    Restoring and building up natural infrastructure such as barrier islands, oyster and coral reefs, mangroves, seagrass, and salt marshes is a cost-effective and eco-friendly way to reduce flood risks.

Find your home's Flood Factor

Past floods, current risks, and future projections based on peer-reviewed research from the world's leading flood modelers.

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Over 142 million properties, neighborhoods, and cities analyzed

View any home's Flood Factor and understand what can be done to protect it from flooding.

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First of its kind flood model shows how risk changes over time

Explore interactive flood maps to visualize recreated historic floods and see how flood risks change in the future.

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