 Throughout the South Central Plains, forests are mostly swamp - southern floodplain forest, unlike the oak–hickory–pine forest of higher, better drained forests in adjacent eco-regions.Along the north and eastern county boundary, the Red River Bottomlands follows the Red River.This eco-region contains floodplains, low terraces, oxbow lakes, meander scars, backswamps, natural levees, and the meandering Red River.