Environmental Rules in Iredell County, NC (2026)
4 rules for unincorporated Iredell County, North Carolina.
Verified from official government sources
Stormwater Management
Any new subdivision in unincorporated Iredell County must include a stormwater drainage plan built to NCDOT drainage standards before the preliminary plat is approved. The rule bars discharge into sanitary sewers and sets minimum grades and side slopes for drainage courses, with a flat ban on run-off flowing directly into Lake Norman, Lookout Shoals Lake or the Catawba River.
Stormwater Drainage Rules in Iredell County
Some RestrictionsIredell County Code of Ordinances § 10.12.1
The stormwater drainage plan shall be designed to meet the following objectives:1.The subdivider shall provide a stormwater drainage system constructed to the standards of the NCDOT... 5.Surface drainage courses shall have side slopes of at least three (3) feet of horizontal distance for each one (1) foot of vertical distance... 6.The minimum grade along the bottom of a surface drainage course ...
Erosion Control
Iredell County requires an approved erosion and sedimentation control plan before disturbing one acre of land, or a half-acre in a water supply watershed. Violators face civil penalties up to $5,000 per violation and a Class 2 misdemeanor for knowing or willful breaches.
Iredell County erosion & sediment control permits
Significant RestrictionsIredell County Code of Ordinances App. H § 6
Prior Plan Approval. No person shall undertake any land-disturbing activity that will disturb one (1) acre or more, or one half (1/2) acre or more in a water supply watershed area, on a tract unless, thirty (30) or more days prior to initiating the activity, a Plan for the activity is filed with and approved by the County.
Flood Zones
Any development inside an Iredell County Special Flood Hazard Area needs a Floodplain Development Permit from the Floodplain Administrator before work starts. Violations are a Class 1 misdemeanor carrying up to a $100 fine or 30 days in jail per day of continued violation.
Iredell County floodplain development permits
Significant RestrictionsIredell County Code of Ordinances App. G, Art. 3 § C
SECTION C. - ESTABLISHMENT OF FLOODPLAIN DEVELOPMENT PERMIT. A Floodplain Development Permit shall be required in conformance with the provisions of this ordinance prior to the commencement of any development activities within Special Flood Hazard Areas determined in accordance with the provisions of Article 3, Section B of this ordinance.
Flood Elevation Requirements
Iredell County's Flood Damage Prevention ordinance requires two feet of freeboard above the base flood elevation for new construction and substantial improvements in Special Flood Hazard Areas. Residential structures, including manufactured homes, must have their reference level, including any basement, built no lower than that Regulatory Flood Protection Elevation.
Flood Elevation & Freeboard Rules, Iredell County
Significant RestrictionsIredell County Code of Ordinances, Appendix G (Flood Damage Prevention), Article 5, § B(1); Article 2
Residential Construction. New construction and substantial improvement of any residential structure (including manufactured homes) shall have the reference level, including basement, elevated no lower than the Regulatory Flood Protection Elevation, as defined in Article 2 of this ordinance. ... "Regulatory Flood Protection Elevation" means the "Base Flood Elevation" plus the "Freeboard". In "Sp...
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