We've had some interesting discussions on that song, including on just recently.
Click here for the "Waly, Waly" discussion.
Here's Water Is wide
Here's Water Is Wide - alternate lyrics
Here's water is wide (note the subtle difference?
And, here's river Is Wide (not-so-good thread...
And, lastly, this and this, the Bounty versions.

There are also probably a number of versions in the database, although at first stab, I only found this one and four or five versions that turned up when I searched for waly. This song is probably good for somebody's PhD thesis. It's one of the more talked-about folk songs around.
-Joe Offer-