N.C. Gen. Stat. § 156-92
Whenever any improvement constructed under this Subchapter is completed it shall be under the control and supervision of the board of drainage commissioners. It shall be the duty of the board to keep the levee, ditch, drain, or watercourse in good repair, and for this purpose they may levy an assessment on the lands benefited by the maintenance or repair of such improvement in the same manner and in the same proportion as the original assessments were made, and the fund that is collected shall be used for repairing and maintaining the ditch, drain, or watercourse in perfect order: Provided, however, that if any repairs are made necessary by the act or negligence of the owner of any land through which such improvement is constructed or by the act or negligence of his agent or employee, or if the same is caused by the cattle, hogs, or other stock of such owner, employee, or agent, then the cost thereof shall be assessed and levied against the lands of the owner alone, to be collected by proper suit instituted by the drainage commissioners. It shall be unlawful for any person to injure or damage or obstruct or build any bridge, fence, or floodgate in such a way as to injure or damage any levee, ditch, drain, or watercourse constructed or improved under the provisions of this Subchapter, and any person causing such injury shall be guilty of a Class 3 misdemeanor, and upon conviction thereof may only be fined in any sum not exceeding twice the damage or injury done or caused.
N.C. Gen. Stat. § 156-92