All natural watercourses and all relocated watercourses within the City are hereby recognized as and declared to be areas in which there is a public easement to flow stormwaters or surface runoff, and areas in which the public and the City possess an interest. (Ord. 1030 § 2(7), 2018; Ord. 1005 § 3, 2015; Ord. 344 § 1 (part), 1967; Ord. 186 § 2, 1948)