It makes sense. When you have a spring fed pond generally you have the spring running in and an outlet with the water flowing out. As a result, you can have cooler water temperatures. I wonder if you have similar flows through a water table pond. Does the water constantly interchange through the water table and your pond similar to the flow of a natural spring? If so, is there a way to measure the interchange? On the one hand it seems to me there would be very little flow in a water table pond because the pond is the area of least resistance. The pond I am digging however is about 30 feet higher and 300 feet away from a creek bottom. It seems like gravity would pull water out of the pond fairly quickly causing an interchange in water. Of course, Iam new and my observations could be all wrong.