Rosario Strait is a

strait A strait is an oceanic landform connecting two seas or two other large areas of water. The surface water generally flows at the same elevation on both sides and through the strait in either direction. Most commonly, it is a narrow ocean channe ...

in northern

Washington state Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington ...

, separating San Juan County and Skagit and Whatcom Counties. It extends from the

Strait of Juan de Fuca The Strait of Juan de Fuca (officially named Juan de Fuca Strait in Canada) is a body of water about long that is the Salish Sea's outlet to the Pacific Ocean. The international boundary between Canada and the United States runs down the centre ...

about north to the

Strait of Georgia The Strait of Georgia (french: Détroit de Géorgie) or the Georgia Strait is an arm of the Salish Sea between Vancouver Island and the extreme southwestern mainland coast of British Columbia, Canada and the extreme northwestern mainland coast ...

. The

USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, a ...

defines its southern boundary as a line extending from Point Colville on

Lopez Island Lopez Island is the third largest of the San Juan Islands and an unincorporated town in San Juan County, Washington, United States. Lopez Island is in land area. The 2000 census population was 2,177, though the population swells in the summer, ...

to Rosario Head on

Fidalgo Island Fidalgo Island is an island in Skagit County, Washington, located about north of Seattle. To the east, it is separated from the mainland by the Swinomish Channel, and from Whidbey Island to the south by Deception Pass. The island is named after ...

, and its northern boundary as a line from Point Migley on

Lummi Island Lummi Island lies at the southwest corner of Whatcom County, Washington, United States, between the mainland part of the county and offshore San Juan County. The Lummi Indian Reservation is situated on a peninsula east of the island, but it d ...

to the east tip of Puffin Island (just east of

Matia Island Matia Island () is an island in the San Juan Islands of the U.S. state of Washington. The island's entire comes under the protection of the U.S. Fish and Wildlife Service and is cooperatively managed by the Washington State Parks and Recreation ...

) and then to Point Thompson on

Orcas Island Orcas Island () is the largest of the San Juan Islands of the Pacific Northwest, which are in the northwestern corner of San Juan County, Washington. History and naming of the island The name "Orcas" is a shortened form of ''Horcasitas,'' fro ...

. Rosario Strait runs north-south between Lopez, Decatur, Blakely, and

Orcas The orca or killer whale (''Orcinus orca'') is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. It is the only extant species in the genus ''Orcinus'' and is recognizable by its black-and-white pat ...

Islands on the west, and

Fidalgo ''Fidalgo'' (, ), from Galician and Portuguese —equivalent to nobleman, but sometimes literally translated into English as "son of somebody" or "son of some (important family)"—is a traditional title of Portuguese nobility that refers to a ...

, Cypress,

Sinclair Sinclair may refer to: Places * Lake Sinclair, near Milledgeville, Georgia * Sinclair, Iowa * Sinclair, West Virginia * Sinclair, Wyoming * Sinclair Mills, British Columbia * Sinclair Township, Minnesota * Sinclair, Manitoba People * ...

, and

Lummi The Lummi ( ; Lummi: ''Xwlemi'' ; also known as Lhaq'temish (), or ''People of the Sea''), governed by the Lummi Nation, are a Native American tribe of the Coast Salish ethnolinguistic group. They are based in the coastal area of the Pacific No ...

Islands on the east. Rosario Strait is a major shipping channel. More than 500

oil tankers An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined crud ...

pass through the strait each year, to and from the

Cherry Point Refinery The Cherry Point Refinery is an oil refinery in the northwest United States, near Bellingham, Washington, north of Seattle. Owned by BP, is the largest refinery in Washington state (and was the 30th largest in the U.S. in 2015). The last refine ...

and refineries near Anacortes. The strait is in constant use by vessels bound for Cherry Point, Bellingham, Anacortes, and the San Juan Islands. Vessels bound for British Columbia or Alaska also frequently use it in preference to the passages farther west, when greater advantage can be taken of the tidal currents.

History

In 1790 the Spanish explorers

Manuel Quimper Manuel Quimper Benítez del Pino (c. 1757 – April 2, 1844) was a Spanish Peruvian explorer, cartographer, naval officer, and colonial official. He participated in charting the Strait of Juan de Fuca and the Sandwich Islands in the late 18th ...

and Juan Carrasco, sailing aboard '' Princesa Real'', gave the name Boca de Fidalgo, in honor of

Salvador Fidalgo Salvador Fidalgo y Lopegarcía (6 August 1756 – 27 September 1803) was a Spanish explorer. He commanded an exploring expedition for Spain to Alaska and the Pacific Northwest during the late 18th century. Early career Fidalgo was born in La Seu ...

, to Rosario Strait, which was thought to be a bay. In 1791

José María Narváez José María Narváez (1768 – August 4, 1840) was a Spanish naval officer, explorer, and navigator notable for his work in the Gulf Islands and Lower Mainland of present-day British Columbia. In 1791, as commander of the schooner ''Santa S ...

renamed it Canal de Fidalgo after determining it was a strait. Also in 1791

Francisco de Eliza Francisco de Eliza y Reventa (1759 – February 19, 1825) was a Spanish naval officer, navigator, and explorer. He is remembered mainly for his work in the Pacific Northwest. He was the commandant of the Spanish post in Nootka Sound on Vancouve ...

gave the name Gran Canal de Nuestra Señora del Rosario la Marinera to what is now the

. In 1792,

George Vancouver Captain George Vancouver (22 June 1757 – 10 May 1798) was a British Royal Navy officer best known for his 1791–1795 expedition, which explored and charted North America's northwestern Pacific Coast regions, including the coasts of what a ...

explored the region and gave the Strait of Georgia its present name after

King George III George III (George William Frederick; 4 June 173829 January 1820) was King of Great Britain and of Ireland from 25 October 1760 until the union of the two kingdoms on 1 January 1801, after which he was King of the United Kingdom of Great Br ...

. He did not provide a name for Rosario Strait. In 1847

Charles Wilkes Charles Wilkes (April 3, 1798 – February 8, 1877) was an American naval officer, ship's captain, and explorer. He led the United States Exploring Expedition (1838–1842). During the American Civil War (1861–1865), he commanded ' during the ...

, during the

Wilkes Expedition The United States Exploring Expedition of 1838–1842 was an exploring and surveying expedition of the Pacific Ocean and surrounding lands conducted by the United States. The original appointed commanding officer was Commodore Thomas ap Catesby ...

, gave Rosario Strait the name Ringgold Channel after one of his officers. Then in 1847 the British Captain

Henry Kellett Vice Admiral Sir Henry Kellett, (2 November 1806 – 1 March 1875) was a British naval officer and explorer. Career Born at Clonacody in Tipperary County, Ireland, on 2 November 1806, Kellett joined the Royal Navy in 1822. He spent three yea ...

reorganized the British Admiralty charts, in the process removing the "pro-American" names given by Wilkes and affirming pro-British names and Spanish names. He affirmed the name Gulf of Georgia (Strait of Georgia) given by

and used a shortened version of Eliza's name for the Strait of Georgia to replace both Wilkes' and Eliza's original names for Rosario Strait. View from Washington Park, Anacortes, WA

View from Washington Park, Anacortes, WA

Following the

Oregon Treaty The Oregon Treaty is a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to t ...

it was assumed by the British to be the route of the deepest channel to the open sea from the 49th Parallel boundary's terminus in the middle of the

Georgia Strait The Strait of Georgia (french: Détroit de Géorgie) or the Georgia Strait is an arm of the Salish Sea between Vancouver Island and the extreme southwestern mainland coast of British Columbia, Canada and the extreme northwestern mainland coast ...

, and is in fact the shortest shipping route.

Haro Strait The Haro Strait 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), Washington sta ...

, west of the

San Juan Islands The San Juan Islands are an archipelago in the Pacific Northwest of the United States between the U.S. state of Washington and Vancouver Island, British Columbia, Canada. The San Juan Islands are part of Washington state, and form the core of ...

, which is wider though somewhat longer, was the American preference for the boundary and its eventual location following the arbitration of the dispute over the San Juan Islands, known as the Pig War.

References

{{reflist Bodies of water of Island County, Washington Straits of San Juan County, Washington Bodies of water of Skagit County, Washington Straits of Washington (state) Bodies of water of Whatcom County, Washington Pig War (1859) Salish Sea