Jackson County, MS Environmental Rules: Erosion Control (2026)

The Jackson County Zoning Ordinance regulates erosion and sedimentation under Article 11, Stormwater Runoff, Illicit Discharges, and Illegal Connections. 1 bars any landowner from permitting soil, sand or gravel to erode off a parcel onto adjoining property, a public street, a drainage channel or the County Drainage System, covering both pre-construction and post-construction conditions. 9 acre needs no permit or SWPPP unless it is part of a larger common plan of development or sale, 1 to 5 acres requires a county permit with a Notice of Intent and SWPPP filed with the County Permits Office, and anything above 5 acres requires an MDEQ permit with the approved MDEQ paperwork copied to the county.

3 folds in NPDES construction and industrial stormwater permits, including a ban on dumping excess cement or washing out cement trucks into the county drainage system, and requires all residential and commercial construction to design sediment and erosion control measures for a 25-year storm frequency, with post-construction drainage design following the Mississippi Department of Transportation Roadway Design Manual, Chapter 7. 3 makes final plat, construction plan, site plan and building permit approval by the county conditional on temporary and permanent erosion and sedimentation controls, achieved through structural best management practices installed before and during construction, temporary or permanent revegetation of bare ground, on-site stormwater detention doubling as temporary sedimentation basins, and control of construction debris, litter and sanitary waste.