just started on my first pond. ive never made a pond before but ive done a bit of research and had 2 different pond guys i know look at it and they both say they wouldnt think twice about it. im uneasy about it since i have to wipe all the trees out to do it and it may or may not hold water. They say it will be no problem so ive bit the bullet and pretty much have to try to make it work now. heres the area i have and the water is planned to come to a hair above the backhoe when all is done. i test dug down about 8 ft at the dam and ran into solid dark clay,which i would think should work for the core.anybody see anything im missing or havent thought about before all these trees are gone?