snrub,
The pond is new and basically a small stream that was dug out (105' x100') The dam is about 2 feet over the height of the level of the stream. The stream runs pretty slow in the summer.It is about 8 feet wide and a few inches deep. I would estimate the pond to be about 350,000-400,000 gallons and it took 10 days to fill, in the dry part of summer. In the spring, the stream is about the same width and about a 1 1/2 feet deep and a lot faster. I couldn't guess what the flow would be. The overflow is a spillway over the dam.

I have large amounts of clay and shale for dam material.

I'll try to post some pics later.

thanks,
Greg