Yard clippings leaves are natural, so they don cause problems if swept into storm drains, right?
Grass, leaves and yard clippings that are repeatedly swept into catch basins can clog the drain, causing flooding and the potential for becoming a breeding ground for rodents and insects. Additionally, grass and leaves decompose and once they enter the ocean, they contribute to new plant growth which deprives fish of their oxygen, and the fish die. For more information on home gardening tips, refer to the residential Good Housekeeping Practices.