Well, I am sure your knowledge about PA laws will be valuable to those members on here from PA as well as other states... My and I have thought about building a pond on our hunting property in PA. We'd like to dam up a hollow on the side of the mountain our land is on. The hollow has an intermittent stream that only flows during the spring and right after a heavy summer rain. Otherwise its all underground. I suspect it would be easier to get the permits to do that than trying to dam up a permanent stream...