FEMA flood map notices
Flood map changes in South Dakota
Since November 2023, FEMA has published flood hazard notices covering 23 of South Dakota's 66 counties.
| County | Notices | Most recent | Appeal window |
|---|---|---|---|
| Union County | 2 | Sep 10, 2026 | — |
| Pennington County | 7 | Aug 21, 2026 | — |
| Lawrence County | 2 | Jul 9, 2026 | — |
| Meade County | 6 | Jul 9, 2026 | — |
| Moody County | 2 | May 20, 2025 | — |
| Davison County | 2 | Jan 16, 2025 | — |
| Brookings County | 1 | Dec 13, 2024 | — |
| Spink County | 2 | Nov 27, 2024 | — |
| Beadle County | 1 | Nov 25, 2024 | — |
| McCook County | 2 | Oct 24, 2024 | — |
| Yankton County | 2 | Oct 21, 2024 | — |
| Lake County | 1 | Aug 1, 2024 | — |
| Codington County | 1 | Jun 28, 2024 | — |
| Hamlin County | 1 | Jun 7, 2024 | — |
| Minnehaha County | 2 | May 16, 2024 | — |
| Hanson County | 1 | Apr 22, 2024 | — |
| Sanborn County | 1 | Apr 22, 2024 | — |
| Miner County | 1 | Jan 29, 2024 | — |
| Kingsbury County | 1 | Jan 11, 2024 | — |
| Hutchinson County | 1 | Dec 26, 2023 | — |
| Roberts County | 1 | Dec 26, 2023 | — |
| Grant County | 1 | Nov 9, 2023 | — |
| Day County | 1 | Nov 3, 2023 | — |
All counties in South Dakota
- Aurora County
- Beadle County
- Bennett County
- Bon Homme County
- Brookings County
- Brown County
- Brule County
- Buffalo County
- Butte County
- Campbell County
- Charles Mix County
- Clark County
- Clay County
- Codington County
- Corson County
- Custer County
- Davison County
- Day County
- Deuel County
- Dewey County
- Douglas County
- Edmunds County
- Fall River County
- Faulk County
- Grant County
- Gregory County
- Haakon County
- Hamlin County
- Hand County
- Hanson County
- Harding County
- Hughes County
- Hutchinson County
- Hyde County
- Jackson County
- Jerauld County
- Jones County
- Kingsbury County
- Lake County
- Lawrence County
- Lincoln County
- Lyman County
- Marshall County
- McCook County
- McPherson County
- Meade County
- Mellette County
- Miner County
- Minnehaha County
- Moody County
- Oglala Lakota County
- Pennington County
- Perkins County
- Potter County
- Roberts County
- Sanborn County
- Spink County
- Stanley County
- Sully County
- Todd County
- Tripp County
- Turner County
- Union County
- Walworth County
- Yankton County
- Ziebach County
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