Boundary Bay draws its name from the position it represents: it straddles the boundary
between Canada and the United States, with its southernmost Canadian point near the
city of White Rock and its northwestern point at Point Roberts.
In 1792, the Spanish explorers Alcalá-Galiano and Valdez named this bay Ensenada del Engaño, Gulf of Deception, likely in answer
to the bay's shallowness.1
1. Andrew Scott, The Encyclopedia of Raincoast Place Names (Madeira Park, BC: Harbour Publishing, 2009), 81.