I cut off my gutters (they are draining above ground) and have all new sewer system that is overhead and runs out to the street. I assumed this would take care of any water running into the catch basin. However during a heavy rain, the catch basin has filled with water. Where would it be coming from? PLease note non of the house plumbing is tied to the catch basin. Also the reason for the questions is that the catch basin is located in a crawl space.