I am looking for opinions on pond depth. I am in northern lower Michigan, 1/4 acre water table pond (basically the water flows through the sand that sits on top of thick laver of clay.) I have seen a wide range of recommend pond depths, which I suppose depends on the specifics of each pond. Most recommendations are for 12-15ft deep, which for a 1/4 acre oval shaped pond is proving to be somewhat of a challenge. What is the purpose of this depth? Is it as a heat sink? Is it for dissolved oxygen storage, (I thought the deep water is unusable because of the low do anyway?) Would a larger area of 10Ft deep provide better, worse, equal to a smaller area of 12-15ft.?