Each different levee which may be constructed shall, by the board of county commissioners of the county in which the levee may be located, be designated by number, and it shall also be the duty of such board of county commissioners to appoint for each different levee a supervisor thereof, who shall hold office during the pleasure of the board. It shall be the duty of such supervisor to maintain a vigilant watch over the levee, and in case of any break or leak therein, or damage thereto of any character, the supervisor shall cause the levee to be repaired. In cases where in the judgment of the supervisor an emergency exists, the supervisor shall have authority to summon forthwith for labor upon the levee any able-bodied person or persons between the ages of eighteen (18) and forty-five (45) years residing in the supervisor’s township, and not belonging to any class exempt from pay service under the laws of the state. Any such person so summoned who shall refuse to attend and perform labor or send a substitute therefor shall be deemed guilty of a misdemeanor and shall be liable for a fine not exceeding five dollars ($5).