Interesting ideas, GBBudd. We have already taken the old pond most of the way out, and will start rebuilding/enlarging it tomorrow. But the idea of having the stream pump water up from the lake, and then drain back into the lake is interesting, indeed. One challenge might be that, since our lake is 250 acres, long and quite narrow, and a popular destination for wake-boarders and wake-surfing...we get MASSIVE wakes pounding over our sea wall all day long. So any water feature that ends at waters edge would be pummeled HEAVILY.