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Roanoke, VA Environmental Rules: Flood Zones (2026)

Significant Restrictions

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

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

Key Facts

Governing section: City Code Sec. 36.2-333(d)
FIRM effective date: September 28, 2007
Floodway increase limit: 1 foot rise on base flood
Special exception body: Board of Zoning Appeals

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 Roanoke, VA.

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 Roanoke, VA on the FEMA flood map

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

Summary

Roanoke's Floodplain Overlay District bans most new encroachments in the floodway and restricts development across all special flood hazard areas, permitting only limited by-right uses like farming and parks unless a special exception is granted.

The following provisions shall apply within the floodway of an AE zone: (i)Within any floodway area, no encroachments, including fill, new construction, substantial improvements, or other development shall be permitted unless it has been demonstrated through hydrologic and hydraulic analysis performed in accordance with standard engineering practice that the proposed encroachment will not result in any increase in flood levels within the community during the occurrence of the base flood discharge...(ii)Permitted uses in floodway. The following uses shall be permitted as of right in the floodway to the extent that they are otherwise permitted in the underlying base zoning district...(1)Agricultural operations, such as farming, pasture, grazing, outdoor plant nurseries, horticulture, forestry, sod farming, and wild crop harvesting;(2)Public and private recreational uses such as parks, picnic grounds, golf courses...

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 94 Update 1).

Full Breakdown

Sec. 2-333(d) establishes the Floodplain Overlay District using FEMA's Flood Insurance Study and Flood Insurance Rate Map for the City, dated September 28, 2007, and any later revisions. Within the floodway of an AE zone, no encroachment, fill, new construction, or substantial improvement is permitted unless hydrologic and hydraulic analysis by a professional engineer proves it will not raise flood levels during the base flood. By-right uses in the floodway are limited to agricultural operations, public and private outdoor recreation such as parks and golf courses, botanical gardens, and accessory residential uses like yards and gardens.

Everything else, including utility substations, water pump stations, sewage or water treatment facilities, quarrying, and material storage, needs a special exception from the Board of Zoning Appeals, and even then only if permitted in the underlying base zoning district. In AE zones without a delineated floodway, no new construction or fill is allowed unless the applicant shows the cumulative effect will not raise the base flood water surface more than one foot. In approximated A Zones lacking detailed flood profiles, the applicant must determine the base flood elevation using accepted engineering methods before development can proceed, and the Zoning Administrator can require a full hydrologic and hydraulic analysis.

AO Zones, mapped for shallow flooding, require the lowest floor of new residential construction to sit at least two feet above the FIRM's specified flood depth, or four feet above the highest adjacent grade if no depth is listed.

Violations & Fines

Developing in the floodway without the required engineering demonstration, or without first obtaining a Conditional Letter of Map Revision and City Council-endorsed resolution for any project that would raise flood levels, violates Sec. 36.2-333 and is enforced through Section 36.2-571's penalty provisions. The Board of Zoning Appeals can revoke a special exception if the approved use in the floodway is not conducted as approved, after which the property loses its nonconforming status.

Frequently Asked Questions

Can I build a shed in Roanoke's floodway?

Only as an accessory structure tied to a permitted use like farming or recreation, and only by special exception from the Board of Zoning Appeals under Sec. 36.2-333(d)(2)(A)(iii), provided it does not increase the 100-year flood height or velocity.

What uses are allowed by right in Roanoke's floodway?

Agricultural operations, public and private outdoor recreation such as parks and golf courses, botanical gardens, and accessory residential uses like yards and gardens are permitted as of right under Sec. 36.2-333(d)(2)(A)(ii), as long as they don't involve structures or fill that raise flood levels.

Who decides if a use is allowed in Roanoke's AE flood zone without a mapped floodway?

The Zoning Administrator determines compliance, and under Sec. 36.2-333(d)(2)(B) no new construction or fill is permitted unless it's demonstrated the cumulative development won't raise the base flood water surface more than one foot at any point in the City.

Sources & Official References

[1]Roanoke City Code Sec. 36.2-333

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