We are in the process of having our pool remodeled. We want to add a waterfall that I would like to build myself. I would like it to be about 8' wide by 3' to 4' tall. Can anyone provide a link to any websites or literature on how to build it.
Some of the questions I have is,
1) Is it best to build the height using mounds of dirt or should I build a concrete base?
2) should I put down a rubber liner with plaster over it to assure it will not leak.
3) Is there special mortar to grout the rocks to prevent shrinking, cracking, or leaking?

Any and all advise would be greatly appreciated. Thank You.