Thanks, Ken. I want to put the pond alongside the stream rather than damming the whole stream because for one thing it is a wooded area except for a bit of a clearing where I plan to put the pond, and for another thing the stream gets very full, fast, and turbid when it rains. I am thinking of trying to use a hydraulic ram pump to supply water to the pond, filtered through a rough filter and maybe even a slow sand filter. The stream is at the lowest point between gently sloping terrain on either side and it has cut into the ground about three feet also. So the pond either has to be higher than the stream or has to be deep with high banks so that it can be lower than the stream and I could gravity feed water from the stream, through a pipe as you said, to the pond. The alternative is to not make the pond so deep and pump water up to it from the stream. I'm a little concerned about having a "low" pond with high banks for fear that an animal could fall in and not be able to get out. Thanks for the tip about the "navigable waters".
