u/Adventureless_Hero

Rain tends to run a channel from my back neighbors yard through my yard. Over time the soil around a fence post was so washed out the fence began to come down.

The neighbor and I have since worked together to purchase a new fence, and the builder avoided putting a post in that same run off spot.

But the problem persists. Should I build a retention wall? In truth the whole fence line sits about a foot above the ground level that meets my house (yard slopes toward the home and runs off to the side to meet the street).

I am not sure if I should build a small retention wall, or one that spans the entire length of the back fence.

Any advice is welcomed!