I talked today to the excavator. He said with the test holes they dug they got down to 10 or 11 feet and started to hit some sandy soil. He says that if we stay at about 10 feet deep the ponds should hold just fine. The USDA handbook recommends a minimum of 7-8 feet deep in my area, therefore I would think that 10 feet would be enough but I also don't want to have a problem with fish kills in the winter. Will 10 feet be enough?
Also I had used picturetrail.com to post the pictures and said it was free and easy, turns out it is only easy. I got an email today from them that my free trial period will be ending soon and I can start an account for $19.95, bummer!