I can tell you about the fuel cost. I had a friend let me use his track hoe and front end loader and he and I started digging back in feb. I am 90 percent finished and sitting at just under 8000.00 for fuel, oil and hyd fluid. The pond is a dug out pond and is nearly 22 feet deep at its deepest point and just under 2 acres right now. Contractor I had bid it was at 50,000.