Land disturbance in Williamson County triggers a soil erosion and sedimentation control plan once excavation or fill tops 500 cubic yards or clearing exceeds 5,000 square feet. Stream work always requires a plan.
Zoning Ordinance Section 7230 requires an erosion and sedimentation control plan with the zoning certificate application whenever earthwork exceeds 500 cubic yards, fill is deeper than three feet, excavation deeper than four feet, or clearing disturbs more than 5,000 square feet. Silt fence, sediment basins, stabilized entrances, and prompt revegetation are standard. Agriculture the county cannot regulate is exempt. Sites disturbing one acre or more also fall under TDEC's construction general permit. Disturbing any stream or waterbody always requires a plan, regardless of size.
Clearing or grading without required controls stops work and brings fines. Sediment washing into the Harpeth or its tributaries can trigger TDEC enforcement and daily penalties until the site is stabilized.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Williamson County, TN
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See how Williamson County's erosion control rules stack up against other locations.
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