The White Horse rapids were rapids on the Yukon River

Yukon River

The Yukon River is a major watercourse of northwestern North America. The source of the river is located in British Columbia, Canada. The next portion lies in, and gives its name to Yukon Territory. The lower half of the river lies in the U.S. state of Alaska. The river is long and empties into...

 in 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...

's Yukon Territory, named for their supposed resemblance to the mane of a charging white horse

Horse

The horse is one of two extant subspecies of Equus ferus, or the wild horse. It is a single-hooved mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today...

. The rapids formed a major navigational obstacle on the Yukon River during the Klondike Gold Rush

Klondike Gold Rush

The Klondike Gold Rush, also called the Yukon Gold Rush, the Alaska Gold Rush and the Last Great Gold Rush, was an attempt by an estimated 100,000 people to travel to the Klondike region the Yukon in north-western Canada between 1897 and 1899 in the hope of successfully prospecting for gold...

, and lent their name to the nearby town of Whitehorse

Whitehorse, Yukon

Whitehorse is Yukon's capital and largest city . It was incorporated in 1950 and is located at kilometre 1476 on the Alaska Highway in southern Yukon. Whitehorse's downtown and Riverdale areas occupy both shores of the Yukon River, which originates in British Columbia and meets the Bering Sea in...

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The Whitehorse dam, constructed in 1957-1958, submerged the rapids beneath the newly created Schwatka Lake

Schwatka Lake

Schwatka Lake is a reservoir created by the damming of the Yukon River in Whitehorse, Yukon, completed in 1958. The dam provides electrical power generation and is operated by the Yukon Energy Corporation. The White Horse Rapids, which gave the city its name, are now under the lake...

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