DisasterAWARE
7
Very High

flood Flood Risk in Portland, OR

Risk Level: Very High — Score 7/10

FEMA: 7Historical: 10

Live Flood alert status near Portland

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Live flood activity around Portland — refreshed throughout the day.

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Key Risk Factors

  • FEMA rates Portland's county as Relatively High risk
  • Estimated annual loss of $91M from this hazard type
  • Frequent historical activity recorded in proximity
  • High recent activity — multiple events in the last 12 months
  • Occurs roughly 0.39 times per year on average

Peak season: March-September

Last significant event: Flood Forecast - Portland Metro, Oregon, United States (2026-03-12) — 21,800 people exposed

Highest Risk Cities for Floods

1
New York, NY
FEMA: 9Historical: 10
2
Los Angeles, CA
FEMA: 9Historical: 10
3
Chicago, IL
FEMA: 9Historical: 10
4
Houston, TX
FEMA: 9Historical: 10
5
Phoenix, AZ
FEMA: 9Historical: 10
6
Philadelphia, PA
FEMA: 9Historical: 10
7
San Antonio, TX
FEMA: 9Historical: 10
8
San Diego, CA
FEMA: 9Historical: 10
9
Dallas, TX
FEMA: 9Historical: 10
10
San Jose, CA
FEMA: 9Historical: 10
Portland is not in the top 10 for flood risk among tracked cities.

How Portland Compares

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Notable Flood Events Near Portland

DisasterAWARE's historical archive records 5 notable flood events near Portland, ranked below by impact. The most impactful: Flood Forecast - Portland metro area, Oregon, United States (March 2026) — 21,800 people exposed; $7,163M capital exposed.

Flood Forecast - Portland metro area, Oregon, United States

March 11, 2026 — WARNING

21,800 people exposed; $7,163M capital exposed

Flood Forecast - Portland metro, United States

December 8, 2025 — WARNING

21,800 people exposed; $7,163M capital exposed

Flood Forecast - Portland Metro, Oregon, United States

March 11, 2026 — WATCH

21,800 people exposed; $7,163M capital exposed

Flood - Portland, OR--WA Region, United States

June 14, 2022 — WARNING

Impact data not available

Flood - Portland, OR--WA Region, United States

June 12, 2022 — WARNING

Impact data not available

Flood Preparedness Tips

  • 1.Know if your property is in a flood zone — check FEMA maps
  • 2.Consider flood insurance even if not in a high-risk zone
  • 3.Never drive through flooded roadways — Turn Around, Don’t Drown
  • 4.Move valuables and important documents to upper floors
  • 5.Install sump pumps and check valves in plumbing

Related Pages

earthquake
Earthquake Risk in Portland
Score: 7/10
wildfire
Wildfire Risk in Portland
Score: 3/10
hurricane
Hurricane Risk in Portland
Score: 0/10
tornado
Tornado Risk in Portland
Score: 3/10
winter-storm
Winter Storm Risk in Portland
Score: 7/10
landslide
Landslide Risk in Portland
Score: 5/10
extreme-heat
Extreme Heat Risk in Portland
Score: 7/10
drought
Drought Risk in Portland
Score: 1/10
high-wind
High Wind Risk in Portland
Score: 5/10
tsunami
Tsunami Risk in Portland
Score: 0/10
flood
Flood Risk in Seattle, WA
Score: 9/10
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Flood Risk in Sacramento, CA
Score: 7/10
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Flood Risk in Oakland, CA
Score: 9/10

How this data is built

Portland, OR flood risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live flood monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.

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