Pin oak is an associated species in silver maple-American elm in the bottom lands along the Ohio, Wabash, Mississippi, and Missouri Rivers.
Pin oak also occurs in black ash-American elm-red maple in poorly drained bottom lands in northern Ohio and Indiana along with silver maple (Acer saccharinum), swamp white oak, sycamore (Platanus occidentalis), black tupelo, and eastern cottonwood (Populus deltoides) [REF].