Would another idea on sealing a micro be to bring in clay? Assuming I could find good clay nearby, how thick would the clay layer need to be in a 5 foot deep pond? I am thinking 2 to 1 slope to a flat bottom.


Edit: I have been digging thru old soil surveys for my area and it seems it is very possible that below my gravel, sand, etc layer is "blue clay." I remember hitting something like that when we dug the test hole at about 12 feet. Can blue clay work to seal a pond?

Last edited by Bill D.; 02/27/15 07:59 PM.
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