FEMA flood map notices
Flood map changes in Marion County, Oregon
FEMA has published 2 flood hazard notices covering Marion County, Oregon since November 2023. The most recent, map revision flood hazard determinations, was published Jan 8, 2025.
Notices for Marion County
- Jan 8, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 9 other counties
- Aug 1, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 28 other counties
Also covered by these notices
FEMA often studies whole watersheds, so one notice can span several counties.
- Coconino County, AZ
- Maricopa County, AZ
- Pima County, AZ
- Yavapai County, AZ
- Riverside County, CA
- San Bernardino County, CA
- San Diego County, CA
- San Mateo County, CA
- Ventura County, CA
- Yolo County, CA
- Lake County, FL
- Hawaii County, HI
- Ada County, ID
- Johnson County, IN
- Monroe County, IN
- Shelby County, IN
- Berrien County, MI
- Van Buren County, MI
- Stearns County, MN
- Wilkin County, MN
- Clark County, NV
- Erie County, NY
- Herkimer County, NY
- Butler County, OH
- Warren County, OH
- Dallas County, TX
- La Salle County, TX
- Wharton County, TX
- Kittitas County, WA
- Kenosha County, WI
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