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Flood map changes in Pima County, Arizona

FEMA has published 24 flood hazard notices covering Pima County, Arizona since November 2023. The most recent, map revision flood hazard determinations, was published Sep 10, 2026.

Appeals are open until Nov 19, 2026

FEMA has proposed new flood hazard determinations that include Pima County. During the 90-day appeal and comment period, property owners can challenge the proposed flood elevations or zone boundaries with technical data, such as a survey or engineering study.

Read the notice and find your community in its table, then compare FEMA's preliminary maps to your property.

Notices for Pima County

Sep 10, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 22 other counties
Aug 21, 2026ProposedProposed Flood Hazard DeterminationsAlso covers 1 other county · Appeals open until Nov 19, 2026
Aug 21, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 24 other counties
Jul 9, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 13 other counties
Jul 9, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 29 other counties
Jun 11, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 29 other counties
Jun 11, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 22 other counties
Jun 11, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 19 other counties
May 18, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 29 other counties
Dec 18, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 28 other counties
Dec 8, 2025ProposedProposed Flood Hazard DeterminationsAlso covers 1 other county · Appeal period closed Mar 9, 2026
Oct 2, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 19 other counties
Oct 2, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 30 other counties
May 12, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 27 other counties
Oct 30, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 16 other counties
Oct 22, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 13 other counties
Aug 23, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 13 other counties
Aug 1, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 28 other counties
Jun 28, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 28 other counties
May 31, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 55 other counties
Apr 22, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 18 other counties
Jan 5, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 47 other counties
Dec 15, 2023Map revisionChanges in Flood Hazard DeterminationsAlso covers 22 other counties
Nov 3, 2023Map revisionChanges in Flood Hazard DeterminationsAlso covers 18 other counties

Also covered by these notices

FEMA often studies whole watersheds, so one notice can span several counties.

What these notices mean

Proposed: FEMA has new draft flood maps. This starts a 90-day window when owners can appeal with technical data. It's the best time to act.
Final: Appeals are resolved. The new maps usually take effect about six months later, when lenders start applying the new zones.
Map revision: A Letter of Map Revision changes one stretch of the map, often after a levee, channel project or new survey.

Notices are organized by county and community, so a notice for your county doesn't mean your property is changing zones. What flood zones mean