I guess without playing around, we'd never discover more... I kind of like this watered edge around a slightly raised bit of ground. It reminds me of the flooded areas we're seeing through the UK at the moment, although far prettier...! Maybe a little too green, but I'm wondering if this would be alot easier on the eye than some drops into water that are too sharp lined.. ?
Forgot to add how I did it.. I changed the Texture in the Inspector window, using the Wrap Mode from Repeat to Clamp...