The edge on that travertine waterfall can be easily worked to fix the fall. That's the nice thing with this stuff, it's really soft stone and can be manipulated.
jatkinson, is there something specific that we should do to the edge? If I remember correctly, it's important to keep the edge squared. I also remember something about creating a groove on the underside and/or using silicone (?). I don't remember the specifics though.