FEMA flood zone rules in St. Michael, MN — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Properties in St. Michael's mapped 1% annual chance (100-year) floodplain along the Crow River and the Mississippi River system must follow the city's floodplain overlay zoning (referenced by Chapter 155) and FEMA NFIP standards, including elevation of lowest floors above the base flood elevation.
St. Michael sits on the Crow River, and a portion of the city is within the FEMA-mapped 100-year floodplain. The city's floodplain overlay (administered through Chapter 155 zoning) prohibits new residential construction below the regulatory flood protection elevation (typically base flood elevation + 1 ft). Detached accessory structures, manufactured homes, and substantial improvements all trigger NFIP requirements. Owners need a flood-zone determination and may be required to carry flood insurance if their mortgage is federally backed. Shoreland and wetland overlays operate alongside the floodplain overlay; see Sec. 155.344 for wetland buffers.
Building below the regulatory flood protection elevation or in violation of the floodplain overlay is a zoning misdemeanor under Sec. 10.99 — up to $1,000 / 90 days — and may trigger removal from FEMA's flood insurance program if not corrected. Lenders also require correction.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how St. Michael's flood zones rules stack up against other locations.
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