[§ 1, Ord. 831U, eff. August 16, 1988; renumbered by § 12, Ord. 947-97, eff. December 18, 1997]
(a) 
It is unlawful for any person, firm or corporation, to place or cause to be placed in the channel, bed, or on the bank of any stream, wash or arroyo or in any storm drain in the City of Avalon or within the floodplain of any stream, wash or arroyo if a floodway has not been adopted, any cans, receptacles, bottles, papers, food, animal or vegetable matter, rubbish, trash, garbage or any decaying or putrid matter, material or substance which might decay, or any refuse, rubbish, or other matter that may pollute or contaminate the flow of the waters in such stream, wash, arroyo, storm drain, floodway or floodplain, or that may catch or collect debris carried by such waters, or that may be carried downstream by such waters to the damage and detriment of either private or public property within or adjacent to said stream, wash, arroyo, storm drain, floodway or floodplain, nor shall any materials, either solid or liquid, be placed in said stream, wash, arroyo, storm drain, floodplain or flood control channel, that will deteriorate the quality of the water flowing therein.
(b) 
As used herein, "floodplain" means the lowlands adjoining natural water-courses which will be covered by water during flood events.