I have a soak-away that just gets rid of water from a single garage roof, so as you can imagine, it's not THAT much water in comparison to a house roof. A couple of days ago, during the rain I noticed it was not flowing away, and upon inspection the whole 15ft? length of gutter was full of water as was the downpipe. I got rid of the water, and through 'super-human' strength physically pulled the downpipe together with Ceramic pipe 90' bend out of the ground This was all blocked with silt, and the pipe that led from this to underground was also blocked. Anyway................. It seems the pipe that goes underground is only about 3ft long, and stops dead into our clay soil. This is how it's been since the property was built 60ish years ago. As I say it's only a single garage roof, so I guess this is probably enough generally as long as you can keep the silt built up out. My question really is this: I can dig down to the end of this 3ft pipe, and expose the end of it, it's less than 1ft down at the end. Would it potentially work better if I dig out a hole at the end of this pipe, let's say approx an 18" cube of soil, fill this void with broken rubble/stone etc, and put a few inches of dirt back on top and pack it down? This is clay soil as I said. Perhaps if I did this, I'd need to put a slab over the top? to stop the dirt on top washing down between the rubble? I can just leave it as it is, I just wondered if some rubble in a hole would aid water dispersion as opposed the the end of this ceramic pipe going directly into soil at the end?