My pond is a partially raised, rigid type except with flexible liner. Take
a
look at it on the following link. It was easy to construct. My wife and
I
completed it in about two days. It might be a little different from what
you
are envisioning, but maybe it will give you some ideas.
http://tinyurl.com/3cz8e
I hope this helps give you some ideas. Just remember, if you live in an
area
that freezes in the winter, the pond should be deep enough that it won't
freeze
solid. You can also buy a de-icer at any garden pond store, if needed.
Thanks George
It has given me quite a few ideas.
I hadn't thought about decreasing the width to increase the depth at all
Peter