We're looking at building a raised patio approximately 2' off ground level. We would like to incorporate some kind of a waterfall off one side of the patio into either a small pond or a waterless pond (not yet decided). The fall has to look somewhat natural although this is not entirely realistic since it will be coming from the patio itself. I'm looking for some ideas and help/tips for doing something like this within a raised patio. Any photos you guys have of the construction phase of something similar would be a huge help. Thanks.