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Greene County, MO Environmental Rules: Flood Zones (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

FEMA flood zone rules in Greene County, MO, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Permit: Required for all floodplain development
Residential elevation: Lowest floor 1 ft above BFE
Floodway rise limit: No more than 1-foot increase
Administrator: Greene County Stormwater Engineer
Scope: Unincorporated county only, not Springfield

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Greene County, MO.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Greene County, MO on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

Unincorporated Greene County requires a Floodplain Development Permit for any construction in a mapped flood zone, and new homes must have their lowest floor built one foot above the base flood elevation. Springfield has its own separate floodplain code.

City-specific rules exist: Springfield has its own flood zones rules that differ from Greene County's county-level regulations. If you live in Springfield, check the city-specific page instead.

New construction or substantial improvement of any residential structures, including manufactured homes, shall have the lowest floor, including basement, elevated to one foot above the base flood elevation. Non-Residential Construction New construction or substantial improvements of any commercial, industrial, or other nonresidential structures, including manufactured homes, shall have the lowest floor, including basement, elevated to one foot above the base flood elevation or, together with attendant utility and sanitary facilities, be floodproofed so that below the base flood elevation the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect shall certify that the standards of this subsection are satisfied. Such certification shall be provided to the Floodplain Administrator as set forth in

Source: Greene County Resource Management — EnvironmentalView official code

Official source re-checked September 7, 2026: the cited page had not changed since it was quoted.

Full Breakdown

The Greene County Stormwater Engineer, designated Floodplain Administrator under Article XXI, issues a Floodplain Development Permit before any construction, fill, or manufactured-home placement begins in a numbered or unnumbered A zone or AE zone shown on the county's Flood Insurance Rate Map. New or substantially improved residential structures, including manufactured homes, must have the lowest floor, basement included, elevated to at least one foot above the base flood elevation; non-residential buildings must meet that same elevation or be engineer-certified floodproof. Encroachment that would raise the base flood's water surface more than one foot is prohibited. These rules bind only unincorporated county land, Springfield, Republic, Willard, Strafford and Ash Grove enforce their own separate codes.

Violations & Fines

Building, filling, or placing a manufactured home in the flood zone without a Floodplain Development Permit, or violating permit conditions, is a misdemeanor carrying up to a $100 fine, with each day a separate offense.

Frequently Asked Questions

Does this rule apply inside Springfield?

No. Springfield administers its own municipal code and floodplain rules; Greene County's Article XXI only governs unincorporated areas outside all cities and towns in the county.

How high must a new house be built in the flood zone?

The lowest floor, including any basement, must sit at least one foot above the base flood elevation shown on the county's Flood Insurance Rate Map.

Who issues the floodplain permit?

The Greene County Stormwater Engineer, designated as Floodplain Administrator, reviews applications and issues the required Floodplain Development Permit before construction begins.

Sources & Official References

[1]Greene County Zoning Regulations, Article XXI - Floodplain Management Ordinance

Other rules in Greene County

Parking Rules: RV & Boat ParkingSome Restrictions Stormwater ManagementSome Restrictions Erosion ControlSome Restrictions Flood Elevation RequirementsSome Restrictions Noise Ordinances: Decibel LimitsHeavy Restrictions Parking Rules: Driveway RulesSome Restrictions Parking Rules: Loading ZonesSome Restrictions Parking Rules: Commercial & Oversized VehiclesSome Restrictions Parking Rules: Abandoned VehiclesSome Restrictions

All Greene County rules

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Flood Zones in Cities Across Greene County

Springfield, MO