Maple Grove, MN Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard required
- 1 foot above base flood
- Term used
- Regulatory flood protection elevation (RFPE)
- Applies to
- Lowest floor of new structures
- Code section
- § 36-644(d)
Summary
Maple Grove requires new floodplain structures to sit at least one foot above the base regional flood elevation, the city's minimum freeboard standard called the regulatory flood protection elevation.
The regulatory flood protection elevation (RFPE) is an elevation no lower than one foot above the elevation of the regional flood, plus any increases in flood elevation caused by encroachments on the floodplain that result from designation of a floodway.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 6 Update 1).
Full Breakdown
Maple Grove defines the regulatory flood protection elevation (RFPE), the elevation floors and equipment must clear, as no lower than one foot above the base flood elevation, plus any rise caused by floodway encroachments, under § 36-644(d). Flood fringe structures must be built on fill reaching the RFPE under § 36-647(b)(1), and floodway accessory structures must have their utilities elevated to or above it under § 36-646(d)(3)d. The one-foot freeboard applies wherever property in Maple Grove, Hennepin County, Minnesota falls in a mapped flood zone.
Violations & Fines
Building below the RFPE without floodproofing violates the floodplain ordinance, a misdemeanor under § 36-654 punishable per § 1-13; the city can also require corrective elevation work or after-the-fact permits.
Frequently Asked Questions
What is Maple Grove's freeboard requirement?
Where does the base flood elevation come from?
Sources & Official References
Other rules in Maple Grove
Compare Maple Grove to another location·View the Minnesota environmental rules overview
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Flood Elevation Requirements in Nearby Cities
How other cities in Hennepin County handle flood elevation requirements.