According to the website it is .42 Bill. I initially questioned if it was really .75 like the owner said, but I had no real reference. I definitely believe the website size is more accurate. As for depth, I haven't gone out to get an average. My wild guess would be around 5 feet. I think the deepest is about 11 feet having swam to the bottom. It will probably be a little while before I know everything I need to know about the pond system. It's a learning process like everything else.