(a) A person commits an offense if, with the intent to swim, bathe, wade, or go in the water, he enters the water of a river, stream, pond, or watercourse within the city, either natural or artificial, whether public or private.
(b) It is an exception to the application of this section if the body of water is a public, semi-public, or private swimming pool which meets the standards of the laws of the state and Chapter 43A of this code.
(c) It is a defense to prosecution under this section that:
(1) the person was engaged in the performance of his official duties as an officer or employee of the city;
(2) the person was engaged in a bona fide effort to rescue or recover a human being or property from the water;
(3) the person was engaged in dredging or other water improvement or construction work authorized by the city council or the park and recreation department; or
(4) the water was designated by official signs showing that wading or going into the water in the specific designated area is authorized by the rules and regulations of the park and recreation department of the city. (Ord. 14971)