Rowan County, NC Fence Regulations: Retaining Walls (2026)
Key Facts
- Applies to
- Retaining walls placing fill in regulated floodways
- Governing test
- No-rise engineering certification, Sec. 9-56
- Alternative path
- FEMA CLOMR, then LOMR within 6 months
- Permit needed
- Floodplain development permit, Sec. 9-8
- Penalty
- Class 1 misdemeanor, up to $50/day
Summary
Rowan County sets no general retaining-wall height or permit rule outside flood areas, but a retaining wall, sidewalk, or driveway that places fill inside a regulated floodway or non-encroachment area must meet the no-rise engineering standard in the county's flood damage prevention ordinance before it can be built.
(10)Other development.(a)Fences in regulated floodways and NEAs that have the potential to block the passage of floodwaters, such as stockade fences and wire mesh fences, shall meet the limitations of section 9-56 of this ordinance.(b)Retaining walls, sidewalks and driveways in regulated floodways and NEAs. Retaining walls and sidewalks and driveways that involve the placement of fill in regulated floodways shall meet the limitations of section 9-56 of this ordinance.
Full Breakdown
Sec. 9-52(10)(b) of the Rowan County Code addresses retaining walls specifically inside mapped floodways, requiring that retaining walls, sidewalks, and driveways that involve the placement of fill in regulated floodways meet the limitations of Sec. 9-56. Sec. 9-56 defines those limitations: no fill, new construction, or other development is permitted in a designated floodway or non-encroachment area unless a registered professional engineer certifies, using standard hydrologic and hydraulic analysis, that the encroachment will not increase base flood levels, or unless FEMA issues a conditional letter of map revision (CLOMR) followed by a letter of map revision (LOMR) within six months of completing the work.
A retaining wall that clears the Sec. 9-56 no-rise test must still comply with every other flood hazard reduction standard in Sec. 9-51 and Sec. 9-52, including anchoring against flotation and construction with flood-resistant materials. This retaining-wall rule applies only inside a regulated floodway or non-encroachment area; the county's general zoning ordinance, not the flood chapter, governs retaining walls elsewhere in unincorporated Rowan County, and the flood chapter sets no separate stand-alone height limit for retaining walls outside those mapped areas.
Violations & Fines
Placing fill for a retaining wall, sidewalk, or driveway inside a regulated floodway or non-encroachment area without the Sec. 9-56 engineering certification, or without a floodplain development permit under Sec. 9-8, is a Class 1 misdemeanor under Sec. 9-13, fined up to fifty dollars per day of continuing violation and punishable by up to thirty days in jail. The floodplain administrator can also issue a stop-work order under Sec. 9-33(16) until the required engineering analysis or CLOMR/LOMR is provided.
Frequently Asked Questions
Do I need a permit for a retaining wall in Rowan County?
What is the no-rise standard for a floodway retaining wall?
Does Rowan County limit retaining wall height outside the floodplain?
Sources & Official References
Other rules in Rowan County
Compare Rowan County to another location·View the North Carolina fence regulations overview
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