Mason County Michigan

Floodplain/Flood Hazard Areas

Identified 100-year (.1) and 500 year (.05) Flood Hazard Areas in Mason County are on the following bodies of water:

Lake Michigan, Bass Lake, Hamlin Lake, Lincoln Lake, Pere Marquette Lake 

Pere Marquette River, South Branch of the Pere Marquette River

Non-mapped areas subject to the State of Michigan Part 451 of the Natural Resources and Environmental Protection Act, 1994 also include the Sable River and Lincoln River.

To determine if a property is locations within a FEMA mapped floodplain please use the following resources: 

1. (FEMA Map Search)

2. Mary Reilly, Mason County Zoning and Building Director,  (231)757-9272 or (231)757-9345 (ext. 314)  or and provide specific information such as parcel number, address, and location of proposed structures. 

3. Sue Conradson, MDEQ Floodplain Engineer (Cadillac) for LOMA or other technical support,  

Building in a Floodplain?

The County Building Department requires a survey to determineBase Flood Elevation (BFE) and additional building requirements to ensure compliance with ASCE 24-05 pertaining to Flood Resistant Design and Contstruction.  A National Flood Insurance Program (NFIP)  Elevation Certificate will be required at the end of the project.  If your are a contractor or a homeowner and are working within the 100-year floodplain you must hire a qualified design professional to assist with surveying, design and construction and/or the use of fill.