Nash County, NC Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Nash County, NC, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Floodway obstructions
- Banned outright, no exceptions for artificial obstructions
- Manufactured homes
- Never permitted or relocated in a floodway
- Certification required
- Registered engineer must certify no flood-level increase
- Appeal hearing
- Held within 10 days for flood overlay cases
- Governing section
- UDO § 12-2.2, Flood Hazard Overlay District
Summary
Unincorporated Nash County outright bans artificial obstructions inside any mapped floodway under the Unified Development Ordinance's Flood Hazard Overlay District rules. No manufactured home may ever be placed or relocated in a floodway, and any other permissible encroachment needs an engineer's certification that it will not raise flood levels.
12-2.2.Artificial Obstructions Within Floodways Prohibited.(A)Located within areas of special flood hazard are areas designated as floodways. The floodway is an extremely hazardous area due to the velocity of floodwaters that carry debris and potential projectiles and has erosion potential.(B)No artificial obstruction may be located within any floodway. ... (D)The following standards shall apply to any permissible use or any other use allowed by variance (in accordance with Section 7-2.2):(1)No encroachments, including fill, new construction, substantial improvements and other developments shall be permitted unless certification (with supporting technical data) by a registered professional engineer is provided demonstrating that such encroachments shall not result in any increase in flood levels during occurrence of the base flood discharge. ... (3)No manufactured home shall be permitted nor relocated in a floodway.
Full Breakdown
2 of the Unified Development Ordinance addresses floodways specifically, the most hazardous portion of the area of special flood hazard because of the velocity, debris and erosion potential of floodwaters there. ' An artificial obstruction is defined broadly as anything, other than a natural obstruction, capable of reducing a stream's flood-carrying capacity or accumulating debris that reduces it; natural rock, trees, gravel and similar matter placed by non-human cause are excluded from the ban. 4. 2(D)(3) states flatly that none may be permitted or relocated in a floodway.
7(A), exists specifically to protect people and property from flood hazards and layers these floodway rules on top of the underlying zoning district's own requirements.
Violations & Fines
A floodway obstruction placed without the required engineering certification, or a manufactured home relocated into a floodway, draws a Notice of Violation from the Zoning Administrator, who also holds the specific flood damage prevention duties assigned under Section 12-2.7 (Sec. 5-3.1). Appeal in a Section 12-2 flood case goes to the Board of Adjustment, with a hearing held within 10 days of the notice rather than the standard timeline (Sec. 5-3.2). Uncorrected violations carry a $100-per-day civil penalty (Sec. 5-5.1, 5-5.4) and possible misdemeanor prosecution under NCGS 14-4 (Sec. 5-4.6).
Frequently Asked Questions
Can I build or place fill in a floodway in unincorporated Nash County?
Can I place a manufactured home in a floodway?
What is a floodway under Nash County's ordinance?
Sources & Official References
Other rules in Nash County
Compare Nash County to another location·View the North Carolina environmental rules overview
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