Happy Valley, Oregon: natural disaster risk
How exposed Happy Valley is to floods, storms and other hazards, from FEMA and NOAA records for Clackamas County.
Happy Valley is a city of 26,738 people in Clackamas County, Oregon. FEMA's National Risk Index rates Clackamas County relatively high for natural hazards overall, higher than most of the US. The costliest hazards there are earthquake, inland flooding and cold wave, with about $219 million in expected losses a year across the county. The weather service has logged 107 storm reports in the county since 1957, including 8 tornadoes and 39 floods. About 0.9% of homes in the county carry federal flood insurance.
Risk figures are for Clackamas County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Happy Valley
Full Clackamas County report ›- Ask whether an older house is bolted to its foundation.
- Consider separate earthquake insurance where risk is high.
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Earthquake | $109M | |
| Inland flooding | $77M | |
| Cold wave | $15M | |
| Heat wave | $8M | |
| Strong wind | $3M | |
| Avalanche | $2M | |
| Ice storm | $1M | |
| Lightning | $1M | |
| Wildfire | $1M | |
| Tornado | $1M | |
| Volcanic activity | $495K | |
| Winter weather | $368K |
Homes in Happy Valley
Older homes and mobile homes usually take more damage in storms, floods and earthquakes. Ask about roof age, flood history and retrofits before you buy or rent.
Strongest tornadoes in Clackamas County
More cities in Clackamas County
Common questions about Happy Valley
Is Happy Valley safe from natural disasters?
Happy Valley is in Clackamas County, which FEMA's National Risk Index rates relatively high overall, higher than most of the US. The biggest hazards are earthquake, inland flooding, cold wave. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Happy Valley?
By expected yearly losses in Clackamas County, the top hazards are earthquake (High), inland flooding (High), cold wave (High). Clackamas County has been part of 21 federal disaster or emergency declarations for natural events.
Does Happy Valley get tornadoes?
Yes. NOAA records list 8 tornadoes in Clackamas County since 1950; the strongest was an F1 tornado on October 9, 2000 near Molalla. FEMA rates tornado risk in the county low.
Do I need flood insurance in Happy Valley?
Standard home insurance does not cover floods. In Clackamas County, about 0.9% of homes have federal flood insurance, and FEMA rates inland flooding risk high. Check the FEMA flood map for your address and get a quote even outside a high-risk zone.