FEMA flood map notices
Flood map changes in Lewis County, Washington
FEMA has published 2 flood hazard notices covering Lewis County, Washington since November 2023. The most recent, map revision flood hazard determinations, was published Aug 6, 2025.
Notices for Lewis County
- Aug 6, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 31 other counties
- Mar 12, 2025Map revisionChanges in Flood Hazard DeterminationsAlso covers 22 other counties
Also covered by these notices
FEMA often studies whole watersheds, so one notice can span several counties.
- Benton County, AR
- Pulaski County, AR
- Sebastian County, AR
- Coconino County, AZ
- Mohave County, AZ
- Riverside County, CA
- Tulare County, CA
- Ventura County, CA
- El Paso County, CO
- Bay County, FL
- Collier County, FL
- Lee County, FL
- Leon County, FL
- Manatee County, FL
- Orange County, FL
- St. Johns County, FL
- Volusia County, FL
- Kane County, IL
- Richland County, IL
- Vigo County, IN
- Sedgwick County, KS
- Jefferson County, KY
- Bay County, MI
- Kalamazoo County, MI
- Lee County, MS
- Buncombe County, NC
- Bernalillo County, NM
- Carson City, NV
- Pottawatomie County, OK
- Berkeley County, SC
- Chester County, SC
- Greenville County, SC
- Collin County, TX
- Dallas County, TX
- Denton County, TX
- Hays County, TX
- Kaufman County, TX
- Rockwall County, TX
- Davis County, UT
- Walla Walla County, WA
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