# Federal Register #2026-23161

FEMA Finalizes Flood Hazard Map Revisions Across Seven States

**Buyer:** Federal Emergency Management Agency (FEMA), Department of Homeland Security
**Posted:** November 13, 2026
**Identifier:** 2026-23161

FEMA finalized flood hazard map revisions affecting communities across seven states.
- Government buyer: Federal Emergency Management Agency (FEMA), within the U.S. Department of Homeland Security; this is an informational notice, not a procurement.
- The revisions are documented in Letters of Map Revision (LOMRs) and may change base flood elevations or depths, Special Flood Hazard Area boundaries or zone designations, and regulatory floodways.
- The determinations update effective Flood Insurance Rate Maps and, in some cases, Flood Insurance Study reports.
- Affected locations include communities and unincorporated areas in Arizona, California, Colorado, Idaho, Montana, Oregon, and Washington.
- No products, services, quantities, vendors, OEMs, or part numbers are requested.

### Description

FEMA finalized new or modified flood hazard determinations for the communities listed in the notice. The changes may concern base flood elevations, flood depths, Special Flood Hazard Area boundaries or zone designations, and regulatory floodways, as shown in the applicable Letters of Map Revision (LOMRs). Each LOMR revises the effective Flood Insurance Rate Maps and, in some cases, Flood Insurance Study reports. The notice lists affected communities, map repository addresses, and modification dates.

[View original listing](https://www.federalregister.gov/documents/2026/11/13/2026-23161/changes-in-flood-hazard-determinations)