Haro Strait

Haro Strait, often referred to as the Haro Straits because it is really a series of straits, is one of the main channels connecting the Strait of Georgia to the Strait of Juan de Fuca, separating Vancouver Island and the Gulf Islands in British Columbia, Canada from the San Juan Islands of Washington state in the United States.

Haro Strait is a critical part of the route of the international boundary between Canada and the United States from the western terminus of the 49th parallel segment of that boundary, and was chosen by the arbitrator in the San Juan Islands dispute (Pig War) over the other main candidate, Rosario Strait, which lies on the east side of the San Juans.

According to the USGS, Haro Strait's southern boundary with the Strait of Juan de Fuca is formed by a line between Discovery Island, just east of Victoria, to Cattle Point at the southern tip of San Juan Island. Haro Strait's northern boundary is defined by a line running from the north tip of the Saanich Peninsula through Piers Island, Portland Island, and Moresby Island, then from Point Fairfax on Moresby Island to Turn Point on Stuart Island, then from the southern end of Stuart Island to McCracken Point at the north end of Henry Island, then to Mitchell Bay on San Juan Island. By this definition Haro Strait does not directly join with the Strait of Georgia. The main channel and international boundary runs from Haro Strait north through Boundary Pass to reach the Strait of Georgia.

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