I have 2 covered basement window wells on the side of my house. When it rains heavily, they fill up with water from the bottom up. There are 4 downspouts from the gutters on our roof. They run into underground pipes (the black corrugated kind) that lead to a large drywell. When it rains heavily, the pipes take quite a lot of water. One of the pipes ran very close to the window wells and had some leaky elbows. We thought that was the cause of the seepage, so we ripped out that portion of pipe (about 10 feet in all) and re-routed it about 5 feet from the window wells using a much higher quality PVC pipe. It's still happening! We recently ran a camera down the pipes and it appears there are a few places where the pipes are crimped or broken by tree roots. This is about 25 feet from the window wells. Roto Rooter said that the crimped/broken pipes are what is causing the problem still and that I should replace ALL of our underground pipes with more solid quality pipes. Question: could this REALLY be the cause? I would figure that any backflow due to the crimps in the pipe would cause the water to overflow from where the downspouts connect into the ground pipe, not come up from underground inside the window wells. Note: there are no drains inside the window wells, just rocks. Not sure drains would help since the water is coming up from below.