Depending on how deep the pond is, you can use metal flashing to
stabilize sandy soil into vertical surfaces. Here's a website with
"how to" on this method:

http://www.pondlady.com/buildb.html

John Bachman wrote in message . ..
I have dug out my pond. Our soil is pure sand below the loam - easy
digging but not good for stable, vertical sides. How can I keep the
sides nearly vertical? I have heard of mixing some cement with the
soil to give it more adhesion.

Does anyone have experience with this or other techniques?

TIA

John