FEMA flood map notices
Flood map changes in Nevada
Since November 2023, FEMA has published flood hazard notices covering 5 of Nevada's 17 counties.
| County | Notices | Most recent | Appeal window |
|---|---|---|---|
| Clark County | 30 | Sep 10, 2026 | — |
| Lyon County | 2 | Jul 9, 2026 | — |
| Douglas County | 9 | Jun 11, 2026 | — |
| Washoe County | 13 | Jun 11, 2026 | — |
| Carson City | 9 | Aug 6, 2025 | — |
All counties in Nevada
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