Williston Lake

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Williston Lake
Ominica Arm, Williston Lake (274287741).jpg
Canada British Columbia relief location map.jpg
Red pog.svg
Williston Lake
Location British Columbia
Coordinates 56°N124°W / 56°N 124°W / 56; -124
Type Reservoir
Primary inflows Peace River
Primary outflows Peace River
Basin  countriesCanada
Max. length251 km (156 mi)
Max. width155 km (96 mi)
Surface area1,761 km2 (680 sq mi) [1]
Average depth42 m (138 ft)
Water volume74 cubic kilometres (60,000,000 acre⋅ft)
Surface elevation671 m (2,201 ft) [2]
(level varies by 18 m)
References [1] [2]

Williston Lake is a reservoir created by the W. A. C. Bennett Dam and is located in the Northern Interior of British Columbia, Canada.

Contents

Geography

The lake fills the basin of the upper Peace River, backing into the Rocky Mountain Trench which is where the Parsnip and Finlay met at Finlay Forks to form the Peace. The lake includes three reaches, the Peace Reach (formerly the Peace Canyon), and the Parsnip and Finlay Reaches, which are the lowermost basins of those rivers, and covers a total area of 1,761 km2 (680 sq mi), [1] being the largest lake in British Columbia and the seventh largest reservoir (by volume) in the world.

The reservoir is fed by the Finlay, Omineca, Ingenika, Ospika, Parsnip, Manson, Nation and Nabesche Rivers and by Clearwater Creek, Carbon Creek, and other smaller creeks.

Several provincial parks are maintained on the shore of the lake, including Muscovite Lakes Provincial Park, Butler Ridge Provincial Park, Heather-Dina Lakes Provincial Park and Ed Bird-Estella Provincial Park.

Tributaries

The following rivers empty into the Williston Reservoir, in clockwise order from the Peace River outlet:

Additionally, the following creeks empty into Williston Reservoir, in clockwise order from the Peace River outlet (this list is not comprehensive): [3]

History

Williston Lake was created in 1968 by the building of the W. A. C. Bennett Dam on the Peace River, which flooded the aboriginal-territorial home of the Tsay Keh Dene First Nation. [4]

The reservoir was named after the Honourable Ray Gillis Williston, at the time the Minister of Lands, Forests and Water Resources.

Barge on Williston Lake Wiliston lake barge.JPG
Barge on Williston Lake

See also

Related Research Articles

Hudson's Hope is a district municipality in northeastern British Columbia, Canada, in the Peace River Regional District. Having been first settled along the Peace River in 1805, it is the third-oldest European-Canadian community in the province, although it was not incorporated until 1965. Most jobs in the economy are associated with the nearby W. A. C. Bennett Dam and Peace Canyon Dam, and timber logging.

<span class="mw-page-title-main">W. A. C. Bennett Dam</span> Dam in Hudsons Hope, British Columbia, Canada

The W. A. C. Bennett Dam is a large hydroelectric dam on the Peace River in northern British Columbia, Canada. At 186 metres (610 ft) high, it is one of the world's highest earth fill dams. Construction of the dam began in 1961 and culminated in 1968. At the dam, the Finlay, the Parsnip and the Peace rivers feed into Williston Lake, also referred to as Williston Reservoir. It is the third largest artificial lake in North America as well as the largest body of fresh water in British Columbia. Williston Lake runs 250 kilometres north–south and 150 kilometres east–west.

<span class="mw-page-title-main">Peace River</span> River in Canada

The Peace River is a 1,923-kilometre-long (1,195 mi) river in Canada that originates in the Rocky Mountains of northern British Columbia and flows to the northeast through northern Alberta. The Peace River joins the Athabasca River in the Peace-Athabasca Delta to form the Slave River, a tributary of the Mackenzie River. The Finlay River, the main headwater of the Peace River, is regarded as the ultimate source of the Mackenzie River. The combined Finlay–Peace–Slave–Mackenzie river system is the 13th longest river system in the world.

<span class="mw-page-title-main">Peace–Athabasca Delta</span> River delta in Northeast Alberta

The Peace–Athabasca Delta, located in northeast Alberta, is the largest freshwater inland river delta in North America. It is located partially within the southeast corner of Wood Buffalo National Park, Canada's largest national park, and also spreads into the Regional Municipality of Wood Buffalo, west and south of the historical community of Fort Chipewyan. The delta encompasses approximately 321,200 ha, formed where the Peace and Athabasca rivers converge on the Slave River and Lake Athabasca. The delta region is designated a wetland of international importance and a UNESCO World Heritage Site. The region is large enough that it is considered one of twenty distinct natural subregions of Alberta by the provincial government's Natural Regions Committee.

<span class="mw-page-title-main">Sekani</span> Ethnic group

Sekani or Tse’khene are a First Nations people of the Athabaskan-speaking ethnolinguistic group in the Northern Interior of British Columbia. Their territory includes the Finlay and Parsnip River drainages of the Rocky Mountain Trench. The neighbours of the Sekani are the Babine to the west, Dakelh to the south, Dunneza (Beaver) to the east, and Kaska and Tahltan, to the north, all Athabaskan peoples. In addition, due to the westward spread of the Plains Cree in recent centuries, their neighbours to the east now include Cree communities.

<span class="mw-page-title-main">Rocky Mountain Trench</span> Long valley in British Columbia

The Rocky Mountain Trench, also known as the Valley of a Thousand Peaks or simply the Trench, is a large valley on the western side of the northern part of North America's Rocky Mountains. The Trench is both visually and cartographically a striking physiographic feature extending approximately 1,600 km (1,000 mi) from Flathead Lake, Montana, to the Liard River, just south of the British Columbia–Yukon border near Watson Lake, Yukon. The trench bottom is 3–16 km (1.9–9.9 mi) wide and is 600–900 m (2,000–3,000 ft) above sea level. The general orientation of the Trench is an almost straight 150/330° geographic north vector and has become convenient as a visual guide for aviators heading north or south.

<span class="mw-page-title-main">Finlay River</span> River in British Columbia, Canada

The Finlay River is a 402 km long river in north-central British Columbia flowing north and thence south from Thutade Lake in the Omineca Mountains to Williston Lake, the impounded waters of the Peace River formed by the completion of the W.A.C. Bennett Dam in 1968. Prior to this, the Finlay joined with the Parsnip River to form the Peace. The headwaters of the Finlay at Thutade Lake are considered the ultimate source of the Mackenzie River. Deserters Canyon is located just north of Williston Lake.

The Parsnip River is a 240-kilometre (150 mi) long river in central British Columbia, Canada. It flows generally north-westward from the Parsnip Glacier in the Hart Ranges to the Parsnip Reach of Williston Lake, formed by the impounding of the waters of the Peace River by the W.A.C. Bennett Dam in 1968. Prior to that, the Parsnip joined with the Finlay River to form the Peace at Finlay Forks, with both sharing an alignment along the Rocky Mountain Trench.

Thutade Lake is located in the Omineca Mountains of the Northern Interior of British Columbia, Canada. About 40 km (25 mi) in length, and no more than about 2 km (1.2 mi) wide, the lake is primarily significant as the ultimate source of the Mackenzie River. The lake is at the head of the Finlay River, which joins the Peace River via Williston Lake. The area is very remote, being located about 260 km (160 mi) north of Smithers, although several mining operations for ores containing copper, lead, zinc and silver have occurred around the lake. The largest of these is the Kemess Mine, an iron and copper property originally owned by Royal Oak Mines and now by Northgate Minerals, located in the valley of Kemess Creek, which is off the northeast end of Thutade Lake. The mine is accessed by the Omineca Resource Road and other resource routes, and is 400 km (250 mi) by road from Prince George. Just downstream from the outlet of Thutade Lake, the Finlay plunges over the 180-foot (55 m) Cascadero Falls, and then through a series of cataracts in a twisting course until it begins its main northeastward trend. Cascadero Falls is slated for hydroelectric development in connection with the power needs of the area's mines.

<span class="mw-page-title-main">Kwadacha</span> Place in British Columbia, Canada

Kwadacha, also known as Fort Ware or simple Ware, is an aboriginal community in northern British Columbia, Canada, located in the Rocky Mountain Trench at the confluence of the Finlay, Kwadacha and Fox Rivers, in the Rocky Mountain Trench upstream from the end of the Finlay Reach of Williston Lake. The population is about 350. It is in the federal electoral riding of Prince George-Peace River.

<span class="mw-page-title-main">Omineca Mountains</span> Group of mountain ranges in British Columbia, Canada

The Omineca Mountains, also known as "the Ominecas", are a group of remote mountain ranges in the Boreal Cordillera of north-central British Columbia, Canada. They are bounded by the Finlay River on the north, the Rocky Mountain Trench on the east, the Nation Lakes on the south, and the upper reaches of the Omineca River on the west. They form a section of the Continental Divide, that, in this region, separates water drainage between the Arctic and Pacific Oceans. The lower course of the Omineca River flows through the heart of the range. To the south of the Ominecas is the Nechako Plateau, to the west the Skeena Mountains and Hazelton Mountains, to the north the Spatsizi Plateau and the Stikine Ranges, while east across the Rocky Mountain Trench are the Muskwa Ranges.

<span class="mw-page-title-main">Omineca River</span>

Omineca River is a river of the North American boreal forest, in northern British Columbia, Canada. It flows into Williston Lake, and is part of the Peace River basin. It was originally a tributary of the Finlay River before the creation of Lake Williston. According to Father Adrien-Gabriel Morice the name is derived from a Sekani word meaning 'lake-like or sluggish river'.

The Nechako Plateau is the northernmost subdivision of the Interior Plateau, one of the main geographic regions of the Canadian province of British Columbia. It spans the basin of the Nechako River and its tributaries the Stuart River and Endako Rivers, and is bounded on the south by the West Road River, south of which is the Chilcotin Plateau and on the north by the Nation River and the valleys of Babine and Takla Lakes, beyond which are the Omineca Mountains (N) and Skeena Mountains (NW). To the west, it abuts the various ranges of the Hazelton Mountains while on its east it is bounded by the pass between Prince George, British Columbia and the Parsnip Arm of Williston Lake, beyond which is the McGregor Plateau, which skirts the Northern Rockies. Some classification systems include the plateau area on the east bank of the Fraser River beyond the city of Prince George; this area neighbours the northernmost reaches of the Quesnel Highland and Cariboo Mountains.

<span class="mw-page-title-main">British Columbia Interior</span> Interior region of British Columbia, Canada

The British Columbia Interior, popularly referred to as the BC Interior or simply the Interior, is a geographic region of the Canadian province of British Columbia. While the exact boundaries are variously defined, the British Columbia Interior is generally defined to include the 14 regional districts that do not have coastline along the Pacific Ocean or Salish Sea, and are not part of the Lower Mainland. Other boundaries may exclude parts of or even entire regional districts, or expand the definition to include the regional districts of Fraser Valley, Squamish–Lillooet, and Kitimat–Stikine.

The Nechako Reservoir, sometimes called the Ootsa Lake Reservoir, is a hydroelectric reservoir in British Columbia, Canada that was formed by the Kenney Dam making a diversion of the Nechako River through a 16-km intake tunnel in the Kitimat Ranges of the Coast Mountains to the 890 MW Kemano Generating Station at sea level at Kemano to service the then-new Alcan aluminum smelter at Kitimat. When it was constructed on the Nechako River in 1952, it resulted in the relocation of over 75 families. It was one of the biggest reservoirs built in Canada until the completion of the Columbia Treaty Dams and the W.A.C. Bennett Dam that created Lake Williston. The water level may swing 10 feet between 2790 and 2800 feet.

The Ospika River is a river in the Northern Interior of British Columbia, Canada, rising in the Northern Rocky Mountains to the north of Lake Williston and flowing south to join that lake in the lower end of its Finlay Reach. Before the creation of that lake by the building of WAC Bennett Dam, it was a tributary of the Finlay River.

<span class="mw-page-title-main">Tsay Keh Dene First Nation</span> One of the Sekani bands of the Northern Interior of British Columbia

The Tsay Keh Dene First Nation is one of the Sekani bands of the Northern Interior of British Columbia. Tsay Keh Dene means "People of the Mountain". While they have an office in the City of Prince George, their territories, settlements, and Indian Reserves are all to the north, in the area of Williston Lake, whose creation as part of the W. A. C. Bennett Dam project flooded a large part of their territory with devastating effects on the people and their way of life.

The Nation River, formerly known as the Tribe River and originally in French as the Rivière au Nation, is a river in the Northern Interior of British Columbia, Canada. Originally a tributary of the Parsnip River, it now feeds Lake Williston via the Nation Arm of that lake, which is the reservoir formed by WAC Bennett Dam. The town of Mackenzie is to the southeast of the river's terminus at the lake.

Finlay Forks, is the confluence of the Finlay River and Parsnip River in British Columbia, Canada. The Finlay Bay Recreation Site, on the southeast bank, is about three kilometres (1.9 mi) southeast of the former settlement that is now submerged beneath Williston Lake. Like the river, it was named after explorer John Finlay. The access road from Mackenzie is called the Parsnip West FSR.

Omineca Provincial Park and Protected Area is a provincial park and protected area located in the north-central interior of British Columbia, Canada. It was established on 11 April 2001 by BC Parks to protect provincially significant riparian and wetland habitats along the Omineca River.

References

  1. 1 2 3 Atlas of Canada. Lakes
  2. 1 2 Statistics Canada. Lakes, elevation and area, by provinces and territories
  3. Mackenzie Natural Resource District Road Users Map
  4. Sekani Tribal Council. Carrier Chronology of Contact with Europeans-Euroamericans Archived at the Wayback Machine. Archive date 2006-11-18.