law: 73. Power to arrest without warrant.-
  Any person in charge of or employed upon any canal or drainage-work, may remove from the lands or buildings belonging thereto, or may take into custody without a warrant and take forthwith before a Magistrate or to the nearest police - station, to be dealt with according to law, any person who, within his view,commits any of the following offences:-
  (1) wilfully damages or obstructs any canal or drainage-work;
  (2) without proper authority interferes with the supply or flow of water in or from any canal or drainage-work, or in any river or stream, so as to endanger, damage or render less useful any canal or drainage-work.