"Fill" means the addition of any material, such as (by way of illustration) earth, clay, sand, rock, gravel, concrete rubble, wood chips, bark, or waste of any kind, which is placed, stored or dumped upon the surface of the ground resulting in an increase in the natural surface elevation. The physical structure of a shore stabilization structure shall not be considered fill. However, fill placed behind the structure is considered fill. Stream bed manipulation for irrigation diversions shall not be considered fill. (Ord. 2123, § 1 (Att.), 2021.)