Complex leaves, serrated or smooth edges, leaf shape, a typical or typical branching, deciduous, etc... ???????? There was plenty of vagueness in your description. There are over 300 species of trees in WV alone. Many in the size range and the description you described. It might be species growing out of it's normal place. Meaning it might be something that grows 40 foot high in Maine but, stunted here. People ARE just trying to help. But, to do so, we need pics. Without them we are just throwing lobs shots at it, because one little difference could easily separate it from another dozen of similar species.
I'm lob shooting at it here but, thinking it is some type of Alder. God Bless