Had an issue with some pool deck drains. They've had problems for more than 2 yrs. I could not find the outlet. Logic seemed to say they must drain "That way" all the drains hold water. so I measured the depth of each drain and determined the drains flow 180 the other direction. I walked past the outlet several time. Then thought maybe they are up on this retaining wall behind this tree. 
Why is there a tree growing out of the side of a retaining wall
That's because it was growing out of the drain outlet.
Photo #1 There is a pool behind the brown fence and at the far end you can see the tree on the wall
Why is there a tree growing out of the side of a retaining wall That's because it was growing out of the drain outlet. Photo #1 There is a pool behind the brown fence and at the far end you can see the tree on the wall
