Several yrs ago I built a 7 acre duck marsh for a customer, it was some really flat river bottom ground, we just built a berm on the lower three sides, and put a water level control structure from agri drain in the lower side, he drains it down in the spring and grows corn and milo in it then in the fall has some wells and floods it out with water up to the point that the lowest ears of corn are just reachable for ducks while sitting on the water, then raises the level as the yr goes on and the food source needs it.
He rents it out to Larry Potterfield and he brings a bunch of clients in during the fall from a good ways around to wine and dine them and hunt ducks every yr.
Larry being the owner of Midway Arms that I am sure quite a few of you have heard of before.
