Tree Roots & Drain Line

Over 30 years ago I installed a 4 inch drain line to remove ground water and storm water from around our house. We've had a couple years of wet weather and a section of our lawn has turned into a swamp so I dug up some the drain line and this is what I found.

Years after the drain line was installed some maple trees started to grow near the drain line and some of the maple tree roots grew into the slots in the drain line.

The tree roots completely filled the drain as they continued to grow in the drain for years.

I replaced an 80 foot section of drain line near the maple trees. I replaced the slotted drain pipe with solid drain pipe, hoping to keep tree roots out.