WaterfowlForum.Net

hi guys just wanted some advice, I have a 4 acre corn field that I've shot plenty of geese out of that I want to add an area that holds water, in the area when it rains a lot of the fields around floods and gets a ton of ducks, unfortunately my field is the highest field, so it drains quick, I'm looking to dig a decent area out, and put pond liners down, and when it rains it should hold the water, I don't have access to a well, but the rain we get floods the other fields so if I can hold the water it should stay, this year im planting millet. any advice on holding the water besides the pond liners? or advice on doing it