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Strait of Georgia
The Strait of Georgia or the Georgia Strait〔(BCGNIS "Georgia Strait" )〕 is a strait between Vancouver Island, and the mainland coast of British Columbia, Canada and extreme northern Washington, United States. It is approximately long and varies in width from .〔(Environmental History and Features of Puget Sound ), NOAA-NWFSC〕 Archipelagos and narrow channels mark each end of the Strait of Georgia, the Gulf Islands and San Juan Islands in the south, and the Discovery Islands in the north. The main channels to the south are Haro Strait and Rosario Strait, which connect the Strait of Georgia to the Strait of Juan de Fuca. In the north, Discovery Passage is the main channel connecting the Strait of Georgia to Johnstone Strait. The strait is a major navigation channel on the west coast of North America, owing to the presence of the port of Vancouver, and also due to its role as the southern entrance to the infracoastal route known as the Inside Passage.
== Extent ==
The United States Geological Survey defines the southern boundary of the Strait of Georgia as a line running from East Point on Saturna Island to Patos Island, Sucia Island, and Matia Island, then to Point Migley on Lummi Island. This line touches the northern edges of Rosario Strait, which leads south to the Strait of Juan de Fuca, and Boundary Pass, which leads south to Haro Strait and the Strait of Juan de Fuca.
The mean depth of the Strait of Georgia is , with a maximum depth of . Its surface area is approximately . The Fraser River accounts for roughly 80 percent of the fresh water entering the strait. Water circulates in the strait in a general counterclockwise direction.〔
The term "Gulf of Georgia" includes waters other than the Georgia Strait proper, such as the inter-insular straits and channels of the Gulf Islands, and may refer to communities on the shore of southern Vancouver Island. As defined by George Vancouver in 1792, the Gulf of Georgia included all the inland waters beyond the eastern end of the Strait of Juan de Fuca, including Puget Sound, Bellingham Bay, the waters around the San Juan Islands, as well as the Strait of Georgia.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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