okanagan river valley (b.c. and wash.) peace river valley (b.c. and alta.) merrimack river valley (n.h. and mass.) hudson river valley (n.y. and n.j.) shenandoah river valley (va. and w. va.) Hudson River Valley (N.Y. and N.J.) columbia river gorge (or. and wash.) yukon river valley (yukon and alaska) salinas river valley (calif.) salish sea (b.c. and wash.)