I'm putting my waterfall back together after the liner failed. I got around ten years out of it. I put in a new one and did some extra work to protect it. I still have a bunch of rocks to stack. I wanted to see how the water flowed on the rocks placed so far.
Every year this area sees some settling of the road bed. I want to pour concrete base to stabilize it better. It's not that big of a job but getting the curves correct takes some effort. I've added ballast about four or five times now and re-leveled it. I have concrete in other areas that has worked out well.
The real issue is that I want to redo the whole layout and possibly make it into a folded dogbone for more interest than just running around the perimeter of the yard.
This job never ends!!