my advice--before building a pond and dam read this site well--know what to look for in clay to core the dam correctly--don't believe everything your contractor tells you ---make them do it like you want it done for once they are gone they are usually gone and accept no blame....
Very well said ga pond rookie. I quoted it to emphasize your words.
We've heard from more than one prospective pond owner that has hired a dirt mover to build a pond. It is quite an art to build a pond that will effectively hold water and to provide the other essential requirements to make the pond a productive fishing spot (shoreline slope, bottom contour, etc). Fortunately we have access to some of the best experts in the nation right here on Pond Boss.
JHAP ~~~~~~~~~~ "My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives." ...Hedley Lamarr (that's Hedley not Hedy)