It shall be unlawful for any person to injure, damage or obstruct any levee, ditch, drain or watercourse constructed or improved under the provisions of this chapter or to build any bridge, fence or floodgate in such way as to injure or damage any such levee, ditch, drain or watercourse. Any person violating any of the provisions of this section shall be guilty of a misdemeanor and, upon conviction thereof, may be fined in any sum not exceeding twice the damage or injury done or caused.