our place has a water control device and is planted annually with sorghum, corn, millet etc. DRAINED POST SEASON EACH YEAR. we did soil tests and added clay to areas that needed less porous bottom, otherwise rich bottomland dirt. After decades of same plants the seed production is declining, even with fertilizer. Area is fed by a small year round spring system and rainwater....dyke was cut in a key trench then filled with rock compacted to make it water tight. HAD access to good construction and earthmoving equipment at the time and "did it right'. Have tried to use the gobbler oak or sawtooth oak early acorn trees but may be too far north to get the acorn production proponents of those trees claim in deep south. All of this was done prior to wetland permitting requirements that may now affect where and how such a area can be built.