I just closed on a 10 acre property that has a sand pit I hope I can convert into a pond. I think the previous owner was trying to build a pond and gave up. Its about .25 acres in surface size, 15 foot deep in the lowest part, 80W x 150L foot irregular shape.

The problem I am worried about is the soil is 78% sand, 20% silt, and 2% clay. There is a little water in the bottom but is receding as it has been dry here. Also it looks like it has never been within 8 foot of the steep banked end. (It tapers from shallow to deep).

Any ideas from you pros? I am thinking clay but not sure what type I can use and clay% required.

Thanks
David