thanks but it is not that type of pond. Its in an area with a high water table so the prior owners simply dug a hole and it filled with water. I have read the publications for this area and most recommend that a fish pond have a minimum depth of 10 to 12 feet but I have also read that some area fish ponds do well with 7 foot depths. This has been a drought year and the pond is only down about a foot and rainfall is about 10 inches less than what is normal.