Skip to main content
CityRuleLookup

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

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Plan required
land disturbance over 1 acre
Filing deadline
30+ days before starting work
Ground cover deadline
15 working days after grading
Civil penalty
up to $5,000 per violation
Project penalty cap
$25,000 if abated in 180 days
Criminal penalty
Class 2 misdemeanor, up to 90 days

Summary

Any land-disturbing activity over one acre in unincorporated Guilford County, including its extraterritorial reach into Jamestown, Stokesdale, Summerfield and Oak Ridge, needs an approved erosion and sedimentation control plan filed at least 30 days ahead. Slopes must get permanent ground cover within 15 working days of grading, and the Enforcement Officer can fine violators up to $5,000 per day.

City-specific rules exist: High Point, and Greensboro have their own erosion control rules that differ from Guilford County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

1. Plan Required. No person shall undertake any land-disturbing activity subject to this Ordinance without first obtaining a Plan approval therefor from Guilford County, if the land-disturbing activity: a. Exceeds one (1) acre. b. Will take place on highly erodible soils with a "k" factor greater than .36 in a watershed critical area. c. Includes a permanent runoff control structure in a watershed critical area. d. Will take place in Tier 1 or Tier 2 of a watershed critical area.

Full Breakdown

36 in a watershed critical area, adds a permanent runoff control structure in a critical area, or falls in Tier 1 or Tier 2 of a watershed critical area (UDO Subsec. 1). The rule reaches beyond the county line into the extraterritorial jurisdiction the county shares with Jamestown, Stokesdale, Summerfield, Whitsett, Sedalia, Pleasant Garden and Oak Ridge under interlocal agreement (Subsec. 1). Farming, forestry conducted under the state's Forest Practice Guidelines, and land-disturbing activity under 43,560 square feet are exempt (Subsec. 2-3). Anyone who does need a plan must file it with the county at least 30 days before starting work (Subsec.

e), keep a buffer along any lake or watercourse wide enough that the nearer 25 percent of the buffer confines visible siltation (Subsec. a), and grade slopes no steeper than vegetation or erosion devices can hold, planting permanent ground cover within 15 working days of completing a grading phase or 90 calendar days after finishing construction, whichever is shorter (Subsec. b, d). The Enforcement Officer can assess a civil penalty per violation, up to $5,000, with a $25,000 cap per project if the violator abates damage within 180 days and has no prior violation (UDO Subsec.

A). Willful or knowing violations are a Class 2 misdemeanor punishable by up to 90 days in jail, a fine up to $5,000, or both (Subsec. F).

Violations & Fines

Violating soil erosion rules carries a civil penalty of up to $5,000 per violation, assessed daily, with a $25,000 cumulative cap when the violator has no prior offense and corrects the damage within 180 days (UDO Subsec. 10.07.A). Guilford County must serve written notice before assessing a penalty, and violators can request a hearing or seek state remission within 30 or 60 days. Willful violations are a Class 2 misdemeanor punishable by up to 90 days in jail and a $5,000 fine.

Frequently Asked Questions

Do I need a permit to grade my lot in unincorporated Guilford County?
Yes, if the land-disturbing activity exceeds one acre, involves highly erodible soil in a watershed critical area, adds a permanent runoff control structure in a critical area, or falls in Tier 1 or Tier 2 of a watershed critical area. You must file an erosion and sedimentation control plan with Guilford County at least 30 days before starting work.
Is farmland exempt from Guilford County's erosion control plan requirement?
No. Farming and related agricultural production, forestry conducted under the state's Forest Practice Guidelines Related to Water Quality, mining activity permitted under the Mining Act of 1971, and any land-disturbing activity that stays under 43,560 square feet are all excluded from the plan-approval requirement under UDO Subsec. 9.2.B.2 and B.3.
What happens if I violate Guilford County's erosion control rules?
Guilford County can assess a civil penalty of up to $5,000 for each violation, with a $25,000 cap on all penalties tied to one land-disturbing project if you have no prior violation and fix the damage within 180 days of the Notice of Violation. Knowing or willful violations are prosecuted as a Class 2 misdemeanor.
How soon must I stabilize a graded slope in Guilford County?
Once any phase of grading is complete, exposed slopes must be planted or otherwise covered enough to restrain erosion within 15 working days, or 90 calendar days after finishing construction overall, whichever period is shorter. A buffer zone along any lake or watercourse must also confine visible siltation to its landward 25 percent.

Sources & Official References

Other rules in Guilford County

All Guilford County rules

Compare Guilford County to another location·View the North Carolina environmental rules overview

Get notified when Erosion Control in Guilford County, NC changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.

Erosion Control in Cities Across Guilford County