Birch Bay was named by botanist Archibald Menzies for its abundance of black birch trees. Menzies was on the 1792 Vancouver expedition. Archeological evidence indicates that the bay was inhabited by Semiahmoo, Lummi and Nooksack tribes since prehistoric times. At the turn of the 20th century, the huge fir trees of the area were logged with oxen and horse teams. Large old-growth stumps, with spring-board marks, remain as evidence.
