We just got done with constructing a 5 acre lake. We have plans for structure and in fact the lake was constructed with many drop-offs, ledges and shelfs. We are planning on putting in 6-12 inch rock for the rip-rap and what I am asking is what would be the best width and depth of the rock that we put down? I have heard that it can be one layer of 6-12 inches and I have heard that it can be a couple feet deep. Obviously, the thinner the layer the less rock we need and, of course, lower cost. However, we don't want to skimp on the rock if it will make a big difference in the long run. Also, how wide of a swath do we need (4,6,8 ft). We do not expect there to be too much fluctuation in water levels.
I just subscribed to Pondboss and I have been very impressed with the amount of knowledge that is shared on this site and I hope someone will give me some good advice.

Doc