How to deal with a clogged foundation drain?
May 21, 2012 10:44 AM Subscribe
How to deal with a clogged foundation drain that's flooding my alley?
posted by zvs to Home & Garden (9 answers total)
I live in a rowhouse; it has a walk-in basement that leads out to a below-grade alley.
I diagrammed my drainage situation
Whenever it rains, the alley fills up with water. There's a drain in the middle of the alley, under which is a shallow pit. I've never seen into it as it's always at least a little bit full of water. (The drain filter is clean.)
In my basement, there's a trap door leading to an excavated part of the foundation, at the bottom of which is a valve. I assume that in my diagram there's a pipe running right to left that eventually reaches the sewer.
How do I fix this stuck drain? I assume the valve in my basement is for cleaning it out, but can I just snake it from the alley? (As an added annoyance, the valve does not want to come open, and the pit it sits in is very narrow and hard to fit a wrench into.)