Pond Boss Forums POND CONSTRUCTION Selecting a site where to get clay?

If you only cover your pond bottom 12" thick you'll need 180 cubic yards. 65x75=4875÷27=180.555555 You should plate the whole bottom of the pond up to and above the high water line. I'd feel a LOT more comfortable with 18" of clay.............

Here's why: You drain the pond down. Bring in the one semi-truckload of clay. Get the heavy equipment to place and pack the clay. Pay for the equipment rental and delivery charge. Fill up the pond, find that you didn't hit the leak, repeat.

You can't just dump the clay into the pond and pack it properly with a tractor or skid loader.