Yard drains are commonly referred to as catch basins. It is a small underground structure that is covered by a plastic or metal grate meant to 'catch' water and then redirect it through one or more branch drain pipes that are attached to it. These pipes are mostly made of plastic. Some may have perforations that allow some of the water to drain along the pipe while others are made with rigid plastic. The runoff water is directed to a storm drain, dry well, another street, or some other termination point.