When you put the sock pipe in, I would try to round the corner at more of a curve and not the 45 degree angle. The water will want to go straight at the bottom and you want it flowing around the curve. I think that spot will be where you have issues no matter what you do so that might be where you take the rock off the top each year and hose it out there. If you find not an issue, wont need to keep doing it.
TreeTopsToo t1_jdw1jlv wrote
Reply to How to fix this rock "trench" in my yard? by putriidx
When you put the sock pipe in, I would try to round the corner at more of a curve and not the 45 degree angle. The water will want to go straight at the bottom and you want it flowing around the curve. I think that spot will be where you have issues no matter what you do so that might be where you take the rock off the top each year and hose it out there. If you find not an issue, wont need to keep doing it.