FEMA flood map notices
Flood map changes in Delaware
Since November 2023, FEMA has published flood hazard notices covering 3 of Delaware's 3 counties.
| County | Notices | Most recent | Appeal window |
|---|---|---|---|
| Kent County | 2 | Aug 6, 2026 | — |
| New Castle County | 13 | Jun 11, 2026 | — |
| Sussex County | 4 | Oct 2, 2025 | — |
All counties in Delaware
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