Lot's of ideas and suggestions out there for realistic waterfalls. My layout was featured in the Oct 2013 issue of 'the other rag' and there happened to be an article in it on how to make waterfalls along with the usual methods of silicon caulk, cellophane, and the like. Had no idea that article was going to be with mine. I used a photo I had taken of 'Looking Glass Falls' on NC 276 just north of Brevard NC that is 65' high and close to the road. I printed it out and used it in several places on our layout to great effect. What do you think?
By bringing the scenery right up to the edges and adding some white paint to the horizontal surface, it looks like the foam is real. The rock face flanking the falls is part of the photo here above. The plaster rocks and lichen are on top of the photo.
