It is unlawful for any person to throw, push, or place or cause to be thrown, pushed, or placed, any ice or snow from private property, sidewalks, or driveways onto the traveled way of a street or alley so as to obstruct gutters, or impede the passage of vehicles upon the street or alley or to create a hazardous condition therein; or to push, throw, place, or cause to be thrown, pushed, or placed such ice or snow onto any adjoining property not owned by such person.
(Code of Iowa, Sec. 364.12[2])