1. Connected Drain Spouts - Water runs directly from the roof to the storm sewer.
2. Thin top soil - Once saturated, allows water to flow directly to the street. A small amount of water is able to soak deeper into the ground before the topsoil dries out.
3. Storm sewers efficiently collect all runoff directing it to the outfall.
4. Water flow in the creek increases quickly as the water discharges from the storm sewer and falls shortly after the rain stops. Flooding may occur.