Iredell County, NC Environmental Rules: Erosion Control (2026)

Appendix H, the Soil Erosion and Sedimentation Control Ordinance adopted October 8, 2019, covers land-disturbing activity in Iredell County and the extraterritorial jurisdictions of Mooresville, Statesville, and Troutman (Section 4.I). It exempts bona fide agriculture and forestry operations following state Best Management Practices, mining permitted under the Mining Act of 1971, and emergency life-safety work (Section 4.II). Section 5 sets mandatory buffer zones along lakes and natural watercourses: 30 feet inside a Water Supply Watershed, 25 feet elsewhere, measured horizontally from the water's edge to the nearest disturbed area.

Graded slopes steeper than 3:1 must be stabilized with ground cover within 7 days of completion; gentler slopes get 14 days. Permanent ground cover sufficient to restrain erosion must be established within 90 calendar days of completing construction (Section 5.IV). Section 6 requires a Plan filed with the county at least 30 days before work begins on any tract disturbing one acre or more (half an acre in a watershed), following either a Major or Minor Erosion Control Permit process; both include a pre-construction meeting where the Erosion Control Administrator issues the permit and Certificate of Approval on site.

A separate grading permit is required before grading for any residential dwelling or non-residential principal structure, and no building permit issues until that grading permit is obtained (Section 6.II). Major plans covering one acre or more must include stormwater runoff calculations, sediment basin design, and may require a seal from an engineer, architect, or surveyor; minor plans for smaller watershed disturbances do not (Section 6.III).