N.C. Gen. Stat. § 156-25
If any person shall fell any tree in any ditch, canal, or natural drainway of any farm, unless he shall remove the same and put such ditch, canal, or natural drainway in as good condition as it was before such tree was so felled; or if any person shall stop up or fill in such ditch, canal, or drainway and thereby obstruct the free passage of water along the said ditch, canal, or drainway, unless the said person shall first secure the written consent of the landowner, and those damaged by such obstruction in said ditch, canal, or drainway, or unless such person so filling in and stopping up such ditch, canal, or drainway shall, upon the demand of the person so damaged, clean out and put the said ditch, canal, or drainway in as good condition as the same was before such filling in and stopping up of the said ditch, canal, or drainway happened, he shall be guilty of a Class 3 misdemeanor.
N.C. Gen. Stat. § 156-25