Bobad, thanks for the response.
Sorry I didn't describe the dam clearly. It is 16' wide at the top of the dam and it does get much wider towards the base, it's roughly a 45 degree angle on the dry side and steeper on the water side. It holds about 16' of water from the base of the dam to the the bottom of the overflow pipes and it is about 4' higher than that to the top of the road. Because of the slope of the land, the dry side of the dam is at least 25' below the roadway. I like the idea of adding the clay to the area, although I would be a little concerned about driving the tractor over the area. I should probably wait until we have at least a week of dry weather. Should I also add bentonite to the water to help stop the leak from the other side?
Thanks,
Jeff
