The Yukon Plateau is a

plateau In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides ha ...

(also defined as a

plain In geography, a plain is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands ...

) located in the Yukon Territory, comprising much of the central and southern

Yukon Yukon (; ; formerly called Yukon Territory and also referred to as the Yukon) is the smallest and westernmost of Canada's three territories. It also is the second-least populated province or territory in Canada, with a population of 43,964 as ...

Territory and the far northern part of

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

, Canada between

Tagish Lake Tagish Lake is a lake in Yukon and northern British Columbia, Canada. The lake is more than long and about wide. It has two arms, the Taku Arm in the east which is very long and mostly in British Columbia and Windy Arm in the west, mostly in ...

(W) and the Cassiar Mountains (E) and north of the

Nakina River The Nakina River is a river in northwestern British Columbia, Canada, rising southeast of Atlin Lake and flowing generally southeast to its confluence with the Inklin River at the locality of Inklin, where the two rivers combine to form the Taku Ri ...

. Sub-plateaus include the

Teslin Plateau The Teslin Plateau is a sub-plateau, of the Yukon Plateau physiographic section, in northern British Columbia, Canada, located north of the Nakina River between Atlin Lake and Teslin Lake. See also *Atlin Volcanic Field *Nisutlin Plateau The Nis ...

and the

Nisutlin Plateau The Nisutlin Plateau is a sub-plateau, of the Yukon Plateau physiographic section, in northern British Columbia, Canada, extending east from Teslin Lake Teslin Lake is a large lake spanning the border between British Columbia and Yukon, Canada. ...

, west and east of

Teslin Lake Teslin Lake is a large lake spanning the border between British Columbia and Yukon, Canada. It is one of a group of large lakes in the region of far northwestern BC, east of the upper Alaska Panhandle, which are the southern extremity of the bas ...

, respectively.