sentences:  The Northern Backswamps are a network of low-lying overflow areas and floodplains historically dominated by bald cypress, water tupelo, overcup oak, water hickory, and Nuttall oak forest subject to year-round or seasonal inundation.The Wapanocca National Wildlife Refuge, which preserves some of the year-round flooded bald cypress forest typical of this ecoregion prior to development for row agriculture lies northeast of Crawfordsville.U.S.