It shall be unlawful for any person, firm or corporation to obstruct the flow of water in any watercourse or ravine, by damming the same or depositing any earth, stone, rubbish or other material herein so as to make stagnant water therein; or to stop or obstruct the course of water in any street, gutter, public sewer, culvert or water pipe or drain laid or placed by the city.
(1980 Code, § 31.127) Penalty, see § 130.99