Flood Plain Development Permit

If your property has any federally regulated flood plain on it, a Williams County Flood Plain Development Permit is required. Since Williams County participates in the FEMA Flood Insurance Program, the county is required to monitor development in the flood plain and these permits provide the information necessary for Williams County to comply with the FEMA requirements.

Flood Zones

The current 100 year flood zones can be viewed on the mapping portion of the Williams County Auditor's web page.


The flood plain development permit is free and the forms and other requirements are available at the Williams County Engineer's Office at 419-636-2454.