If any person or persons shall willfully cut into, mutilate or disfigure any levee or excavate dirt or sand from the right-of-way owned by any board of levee commissioners or any part thereof, or trespass upon said levee in violation of posted regulations, without being authorized to do so by the said board of levee commissioners, such person or persons shall be guilty of a misdemeanor, and on conviction shall be fined not less than One Hundred Dollars ($100.00) nor more than One Thousand Dollars ($1,000.00) for each offense, or shall be confined in the county jail for a term not exceeding thirty (30) days, or by both such fine and imprisonment in the discretion of the court.