Thanks, guys.
Sunil - here is a side picture of the cliff. Yes, I need to think about how steep it is. The top of the cliff will be under several feet of water about 5 feet from shore. The bank is also quite steep right here. Picturesque, but not good for my wife's goats or human kids. There is a really good beach area near by, so I may do something with landscaping to make this area less attractive.
The water level should be constant. I have a large primary spillway and with the constant flow in from the year-round springs, I don't think evaporation will be an issue.
Ewest - thanks for the structure ideas. I like the log leaning against the cliff - I have plenty of them. A follow on question is - is there any difference between hardwoods or pine as structure? I have tons of each.
