What fruit trees are known to grow in partially flooded area zone 7 TN ?
Fruit Tree in Partial Flooded Areas
Certified GKH Gardening Expert
You can try a Pear tree, look for those labeled as grown from Pyrus betulaefolia. In fact, P. betulaefolia is ideal for moist soil. If you want to grow Asian pears in your moist garden, seek out those grown on this rootstock as well.
Also Persimmon Trees may do pretty well.