The city council shall at all times have full power and authority to prohibit the use and operation of any and all boats in the waters of the lakes should it become necessary, in the opinion of the city council, to do so for the purpose of suppressing and arresting any epidemic or any contagious or infectious disease or whenever, in the opinion of the city council, the use and operation of boats in such waters should be discontinued for any reason whatever. Subject to such control and supervision, the lakes shall be controlled and maintained for recreational purposes by the park and recreation board. (Ord. Nos. 8018; 32407)