The Dease Plateau is a subregion of the larger Yukon Plateau

Yukon Plateau

The Yukon Plateau is a plateau comprising much of the central and southern Yukon Territory and the far northern part of British Columbia, Canada between Tagish Lake and the Cassiar Mountains and north of the Nakina River....

, and is located in far northern British Columbia

British Columbia

British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, northwest from the Deadwood River

Deadwood River

The Deadwood River is a tributary of the Dease River in the far north of British Columbia, Canada. It forms the southeastern boundary of the Dease Plateau, which extends northward to the Yukon-British Columbia boundary and beyond....

 to and beyond the Yukon

Yukon

Yukon is the westernmost and smallest of Canada's three federal territories. It was named after the Yukon River. The word Yukon means "Great River" in Gwich’in....

-British Columbia boundary. The plateau is named in association with Dease Lake and the Dease River

Dease River

The Dease River flows through northwestern British Columbia, Canada and is a tributary of the Liard River. The river descends from Dease Lake, though its ultimate origin is in the headwater of Little Dease Creek at Snow Peak, approximately 50 km to the west of the lake...

. Very mountainous in some of its vast area, it is in some classification systems it is included as a subarea of the Cassiar Mountains

Cassiar Mountains

The Cassiar Mountains are the most northerly group of the Northern Interior Mountains in the Canadian province of British Columbia and the Yukon Territory. They lie north and west of the Omineca Mountains, west of the northernmost Rockies and the Rocky Mountain Trench, north of the Hazelton...

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