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110th Meridian West

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110th Meridian West

Line across the Earth
110°
110th meridian west
In Canada, the 110th meridian west defines part of the border between the Northwest Territories and Nunavut, and it approximately defines the border between Alberta and Saskatchewan.

The meridian 110° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

The 110th meridian west forms a great circle with the 70th meridian east.

In Canada, the meridian forms the boundary between Nunavut and the Northwest Territories north of the parallel 70° north. Originally 110°W was intended as the Fourth Meridian for the Dominion Land Survey, but because of the imperfect surveying methods of the time, the meridian was placed a few hundred meters west of this longitude. The Fourth Meridian has been the entire boundary between Alberta and Saskatchewan since 1905.

In the United States, the meridian formed the western border of the historic and extralegal Territory of Jefferson.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 110th meridian west passes through:

Co-ordinates Country, territory or sea Notes
Arctic Ocean
 Canada Northwest Territories / Nunavut border — Borden Island
Wilkins Strait
 Canada Northwest Territories / Nunavut border — Mackenzie King Island
Unnamed waterbody
 Canada Northwest Territories / Nunavut border — Melville Island
Eldridge Bay
 Canada Northwest Territories / Nunavut border — Melville Island (for about 2 km)
Sabine Bay
 Canada Northwest Territories / Nunavut border — Melville Island
Parry Channel Viscount Melville Sound
 Canada Northwest Territories / Nunavut border — Victoria Island
Nunavut — from on Victoria Island
Coronation Gulf
 Canada NunavutJameson Islands and the mainland
Northwest Territories — from , passing through the Great Slave Lake
Saskatchewan — from , passing through Lake Athabasca, around 400m east of the Alberta border
 United States Montana
Wyoming — from
Utah — from
Arizona — from
 Mexico Sonora
Gulf of California
 Mexico Baja California Sur
Pacific Ocean
Southern Ocean
Antarctica Unclaimed territory — passing through the Walgreen Coast of Marie Byrd Land

See also


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