I have excavated 12' of sand from my new pond and and have reached the water table. There is approximately 4' more sand to remove before I get to the clay I need to line the sides. Here is my question. Could I lay drain tile around the inside sides of the pond just above the clay bottom in the sand before I line the sides. Then pump from the ground water to fill and maintain the pond? This seems like a good supply of shallow water with a much greater pumping capacity than a well.