Williamson County requires erosion plans for significant earthwork and forbids development from sending more stormwater onto downstream neighbors. Post-development flows cannot exceed the peak rate, volume, or velocity of the land in its natural state.
Grading is regulated through the same resource-protection article as erosion and stormwater. Earthwork above 500 cubic yards, fill over three feet, or excavation over four feet needs a soil erosion and sedimentation control plan (Section 7230). Section 7220 bars any development from discharging stormwater to downstream owners, watercourses, or channels at a higher peak rate, volume, or velocity than the undeveloped site would have produced. Drainageways must keep functioning, retaining walls and detention basins may be required, and the owner maintains on-site drainage facilities long-term.
Grading without a plan stops work and brings fines. Redirecting drainage onto a neighbor or downstream property requires corrective action; slope failures from bad grading leave the owner liable for repairs.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Williamson County, TN
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Williamson County, TN
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Williamson County, TN
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Williamson County, TN
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Williamson County, TN
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Williamson County, TN
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