Lyon County Final Flood Insurance Risk Maps (FIRM)
Disclaimer: These maps are for reference only. Lyon County is not responsible for errors herein contained.
Interactive Mapping
Click to access online flood maps
PDF maps
Maps produced July 2010 by Lyon County GIS
Amiret Township
Clifton Township
Coon Creek Township
Custer Township
Eidsvold Township
Fairview Township
Grandview Township
Island Lake Township
Lake Marshall Township
Lucas Township
Lynd Township
Lyons Township
Monroe Township
Nordland Township
Rock Lake Township
Shelburne Township
Sodus Township
Stanley Township
Vallers Township
Westerheim Township
City of Marshall
2007 Preliminary Flood Insurance Risk Maps (FIRM)