Environmental Rules in Mosinee, WI (2026)

Flood Zones

The City of Mosinee regulates floodplain development through Chapter 42 (Land Use), Article V Floodplain Zoning of its Code of Ordinances, in conformance with Wis. Stat. Sec. 87.30 and Wisconsin Administrative Code Chapter NR 116, plus 44 CFR Parts 59-72. The Wisconsin River runs through Mosinee and is the principal regulated waterway, including reaches affected by the Mosinee Dam. The Marathon County Flood Insurance Study and Digital Flood Insurance Rate Maps (DFIRMs) became effective July 22, 2010. Mosinee participates in the National Flood Insurance Program; new residential structures are prohibited in the regulatory floodway and in the flood fringe must be elevated to the flood protection elevation.