If it will be a 10 ac pond, you could distribute the spoils from the pond to create a grade to drain/funnel rainfall to the pond. I have a water table pond in sandy soil, no dam, just a hole in the ground. We hit a 10" thick layer of clay at 10' with a 12" layer of gravel on top of it, and another layer of gravel at 21' with a thick layer of blue clay under that.

Like Dave said, the groundwater layer will suck water out of your pond when the surrounding water table goes dry or has less pressure in it than the water pressure in your pond.

How much watershed (in acres) could you contour to feed your pond?


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).