Portland, Oregon
FEMA flood zone at 1221 Southwest Fourth Avenue
Current effective-map evidence
Each lookup resolves the specific public address through U.S. Census geography, then checks FEMA NFHL availability, FIRM panel, political jurisdiction and flood-hazard zone at that exact point. Panel 4101830093E, effective October 19, 2004, version 1.1.1.0 was checked October 4, 2026. An older effective date is not the date this lookup was checked.
Missing, conflicting, stale or unavailable coverage produces no exact answer. Zone X is not a guarantee against flooding. This is not a parcel-wide, surveyed-structure, insurance or elevation determination.
Official FEMA effective NFHL layers