I am in Chipley, Fl. I will take the spillway into consideration, there is a large area 100 ft from the edge of the where the dam will be that is swamp and wetlands extending for a lot of acreage, 50-100 or so of swamp and washed out creek bed. So I could do an emergency spillway into that, as it already collects a lot of water around us, and most of the natural runoff of where I am digging. So I think it might dry the area up a bit until the pond overflows. As for compaction, I only have my JD 3032, I thought about just running the box blade all the way down over and over, but not sure if that would be enough. I might rent a skid steer, or if it really comes down to it, I might have to pay someone for a couple of days of dozer work for that part. Thanks!