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Alameda County, California Flood Zones

Check an Address in Alameda County

Enter any address in Alameda County, California to see its FEMA flood zone

Alameda County Disaster History

Disaster Declarations
24
Flood/Coastal Disasters
8
Hurricane Disasters
1
Latest Disaster
SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES (2023-02-21)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Alameda County

DeclarationTypeDate
SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDESSevere Storm2023-02-21
SEVERE WINTER STORMS, FLOODING, AND MUDSLIDESFlood2023-01-08
SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDESFlood2022-12-27
COVID-19Biological2020-01-20
COVID-19 PANDEMICBiological2020-01-20
SEVERE WINTER STORMS, FLOODING, AND MUDSLIDESFlood2017-02-01
SEVERE WINTER STORMS, FLOODING, AND MUDSLIDESFlood2017-01-18
SEVERE WINTER STORMS, FLOODING, AND MUDSLIDESSevere Storm2017-01-03
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDESSevere Storm2006-03-29
SEVERE STORMS, FLOODING, MUDSLIDES, AND LANDSLIDESSevere Storm2005-12-17

Flood Zone Types in Alameda County

FEMA assigns flood zone designations to areas in Alameda County, California:

AE High Risk — 1% annual chance of flooding. Insurance required.

VE Very High Risk — Coastal flooding with wave action.

X (Shaded) Moderate Risk — 500-year floodplain.

X Low Risk — Outside major floodplains.

View all flood zone types →

Flood Insurance in Alameda County

Properties in Alameda County, California that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.

Even outside high-risk zones, flood insurance is recommended. Over 20% of NFIP claims come from low and moderate-risk areas.

Visit FloodSmart.gov to find an agent and get a quote.