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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, for ...
is the westernmost province of
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by to ...
, bordered by the
Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the conti ...
. With an area of it is Canada's third-largest province. The province is almost four times the size of the United Kingdom and larger than every
United States state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its s ...
except
Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U ...
. It is bounded on the northwest by the U.S. state of Alaska, directly north by
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 ...
and the
Northwest Territories The Northwest Territories (abbreviated ''NT'' or ''NWT''; french: Territoires du Nord-Ouest, formerly ''North-Western Territory'' and ''North-West Territories'' and namely shortened as ''Northwest Territory'') is a federal territory of Canada. ...
, on the east by
Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest T ...
, and on the south by the U.S. states of
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...
,
Idaho Idaho ( ) is a U.S. state, state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Monta ...
, and
Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columb ...
. Formerly part of the
British Empire The British Empire was composed of the dominions, colonies, protectorates, mandates, and other territories ruled or administered by the United Kingdom and its predecessor states. It began with the overseas possessions and trading posts e ...
, the southern border of British Columbia was established by the 1846
Oregon Treaty The Oregon Treaty is a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to ...
. The province is dominated by
mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have ari ...
s, among them the
Canadian Rockies The Canadian Rockies (french: Rocheuses canadiennes) or Canadian Rocky Mountains, comprising both the Alberta Rockies and the British Columbian Rockies, is the Canadian segment of the North American Rocky Mountains. It is the easternmost part ...
but dominantly the
Coast Mountains The Coast Mountains (french: La chaîne Côtière) are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbi ...
,
Cassiar Mountains The Cassiar Mountains (french: Chaîne des Cassiars) are the most northerly group of the Northern Interior Mountains in the Canadian province of British Columbia and also extend slightly into the southernmost Yukon Territory. They lie north and ...
, and the
Columbia Mountains The Columbia Mountains are a group of mountain ranges along the upper Columbia River in British Columbia, Montana, Idaho and Washington. The mountain range covers 135,952 km² (52,491 sq mi). The range is bounded by the Rocky Mountain T ...
. Most of the population is concentrated on the Pacific coast, notably in the area of
Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2021 Canadian census recorded 662,248 people in the city, up from 631,486 in 2016. ...
, located on the southwestern tip of the mainland, which is known as the
Lower Mainland The Lower Mainland is a geographic and cultural region of the mainland coast of British Columbia that generally comprises the regional districts of Metro Vancouver and Fraser Valley. Home to approximately 3.05million people as of the 2021 Cana ...
. It is the most mountainous province of Canada.


Statistics

* Total area: * Land area: * Water area: (2.1%)


Physical geography

British Columbia is customarily divided into three main regions, the Interior, the
Coast The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the coastline. The Earth has around of coastline. Coasts are important zones in n ...
and the
Lower Mainland The Lower Mainland is a geographic and cultural region of the mainland coast of British Columbia that generally comprises the regional districts of Metro Vancouver and Fraser Valley. Home to approximately 3.05million people as of the 2021 Cana ...
(though the last-named is technically part of the Coast). These are broken up by a loose and often overlapping system of cultural-geographic regions, often based on river basins but sometimes spanning them. Examples of the former would be the Kootenays, the Okanagan, and the Chilcotin, while of the latter would be the
Lillooet Country The Lillooet Country, also referred to as the Lillooet District, is a region spanning from the central Fraser Canyon town of Lillooet west to the valley of the Lillooet River, and including the valleys in between, in the Southern Interior of Br ...
and
Cariboo The Cariboo is an intermontane region of British Columbia, Canada, centered on a plateau stretching from Fraser Canyon to the Cariboo Mountains. The name is a reference to the caribou that were once abundant in the region. The Cariboo was t ...
. Important subareas of these include the
Fraser Valley The Fraser Valley is a geographical region in southwestern British Columbia, Canada and northwestern Washington State. It starts just west of Hope in a narrow valley encompassing the Fraser River and ends at the Pacific Ocean stretching from the ...
, part of the Lower Mainland, the Fraser Canyon (which overlaps with various regions) and the Robson Valley, which is the uppermost basin of the Fraser River southeast of Prince George. Vancouver Island is seen as its own region within the Coast, as are the
Haida Gwaii Haida Gwaii (; hai, X̱aaydag̱a Gwaay.yaay / , literally "Islands of the Haida people") is an archipelago located between off the northern Pacific coast of Canada. The islands are separated from the mainland to the east by the shallow Heca ...
(Queen Charlotte Islands) and the
Gulf Islands The Gulf Islands are a group of islands in the Salish Sea between Vancouver Island and the mainland coast of British Columbia. Etymology The name "Gulf Islands" comes from "Gulf of Georgia," the original term used by George Vancouver in his ...
.


Terrain

The
Canadian Rockies The Canadian Rockies (french: Rocheuses canadiennes) or Canadian Rocky Mountains, comprising both the Alberta Rockies and the British Columbian Rockies, is the Canadian segment of the North American Rocky Mountains. It is the easternmost part ...
,
Coast Mountains The Coast Mountains (french: La chaîne Côtière) are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbi ...
and Inside Passage provide some of British Columbia's renowned and spectacular scenery. These landforms provide the backdrop and context for a growing outdoor adventure and
ecotourism Ecotourism is a form of tourism involving responsible travel (using sustainable transport) to natural areas, conserving the environment, and improving the well-being of the local people. Its purpose may be to educate the traveler, to provide fund ...
industry. In the southwestern corner of B.C., the Lower Fraser Valley forms a flat, fertile triangle of intensively used land. The city of
Penticton Penticton ( ) is a city in the Okanagan Valley of the Southern Interior of British Columbia, Canada, situated between Okanagan and Skaha lakes. In the 2016 Canadian Census, its population was 33,761, while its census agglomeration The ce ...
and the small towns Oliver, and Osoyoos have some of the warmest summer climates in Canada, although the hottest spots are the towns of Lillooet and Lytton in the Fraser Canyon. Nearly all of the
Coast The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the coastline. The Earth has around of coastline. Coasts are important zones in n ...
including much of
Vancouver Island Vancouver Island is an island in the northeastern Pacific Ocean and part of the Canadian province of British Columbia. The island is in length, in width at its widest point, and in total area, while are of land. The island is the largest by ...
is covered by a temperate rain forest. One-third of the province consists of barren
alpine tundra Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alpine tundra gets ...
, icefields, and
glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such a ...
s.


Mountains and mountain ranges

The landforms of British Columbia include two major continental landforms, the
Interior Plains The Interior Plains is a vast physiographic region that spreads across the Laurentian craton of central North America, extending along the east flank of the Rocky Mountains from the Gulf Coast region to the Arctic Beaufort Sea. In Canada, it e ...
in the province's northeast, the British Columbia portion of which is part of the Alberta Plateau. The rest of the province is part of the Western Cordillera of North America, often referred to in Canada as the Pacific Cordillera or Canadian Cordillera. The Cordillera is subdivided into four main "systems" (which are distinct from the corresponding region's geologic provinces):


= Eastern System

= B.C.'s Eastern Mountain System comprises the dominant Canadian Rockies, with the
Cariboo The Cariboo is an intermontane region of British Columbia, Canada, centered on a plateau stretching from Fraser Canyon to the Cariboo Mountains. The name is a reference to the caribou that were once abundant in the region. The Cariboo was t ...
, Selkirk,
Monashee The Monashee Mountains are a mountain range lying mostly in British Columbia, Canada, extending into the U.S. state of Washington. They stretch from north to south and from east to west. They are a sub-range of the Columbia Mountains. The high ...
, and Purcell ranges of the
Columbia Mountains The Columbia Mountains are a group of mountain ranges along the upper Columbia River in British Columbia, Montana, Idaho and Washington. The mountain range covers 135,952 km² (52,491 sq mi). The range is bounded by the Rocky Mountain T ...
system in the south, and the
Hart Ranges The Hart Ranges are a major subrange of the Canadian Rockies located in northeastern British Columbia and western Alberta. The mountains constitute the southernmost portion of the Northern Rocky Mountains. The Hart Ranges were named in honour o ...
& Muskwa Ranges of the Northern Rocky Mountains to the north The Canadian Rockies incorporate the Canadian segment of the North American
Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico ...
range. The southern end in Alberta and British Columbia borders Idaho and Montana of the United States. The northern end is at the
Liard Plain The Liard Plain is a landform in far northern British Columbia, Canada. It is located between the Smith River and the Dease Plateau. See also *Geography of British Columbia British Columbia is the westernmost province of Canada, bordered b ...
in British Columbia.


= Interior System

= The Interior System comprises the Interior Plateau and
Interior Mountains The Interior Mountains or Northern Interior Mountains are the semi-official names for an expansive collection of mountain ranges that comprises much of the northern half of the Canadian province of British Columbia and a large area of southern Y ...
(aka the Northern Interior Mountains) and the southern part of the
Yukon Plateau The Yukon Plateau is a plateau (also defined as a plain) located in the Yukon Territory, comprising much of the central and southern Yukon Territory and the far northern part of British Columbia, Canada between Tagish Lake (W) and the Cassiar Moun ...
. The major subdivisions of the Interior Mountains are the
Cassiar Mountains The Cassiar Mountains (french: Chaîne des Cassiars) are the most northerly group of the Northern Interior Mountains in the Canadian province of British Columbia and also extend slightly into the southernmost Yukon Territory. They lie north and ...
, Omineca Mountains,
Stikine Plateau The Stikine Plateau is a plateau in northern British Columbia, Canada. It lies between the Boundary Ranges of the Coast Mountains on the west and southwest and the Cassiar Mountains along its northeast, and between the Skeena Mountains on its south ...
, Skeena Mountains and Hazelton Mountains. Each has a variety of subranges and some definitions include the
Tahltan Highland The Tahltan Highland is an upland area of plateau and relatively lower mountain ranges in British Columbia, Canada, lying east of the Boundary Ranges and south of the Inklin River (the east fork of the Taku River). Its eastern boundary is formed b ...
and Tagish Highland which may also be assigned to the
Boundary Ranges The Boundary Ranges, also known in the singular and as the Alaska Boundary Range, are the largest and most northerly subrange of the Coast Mountains. They begin at the Nass River, near the southern end of the Alaska Panhandle in the Canadian pr ...
of the
Coast Mountains The Coast Mountains (french: La chaîne Côtière) are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbi ...
(see next). The major subdivisions of the Interior Plateau are the Nechako Plateau, the McGregor Plateau, the
Fraser Plateau The Fraser Plateau is an intermontane plateau. It is one of the main subdivisions of the Interior Plateau located in the Central Interior of British Columbia. Geography The region includes the Cariboo Plateau and Chilcotin Plateau, and the adjoi ...
(which includes the Chilcotin Plateau and Cariboo Plateau and a number of small mountain ranges) and the Thompson Plateau. The
Quesnel Quesnel or Quesnell means "little oak" in the Picard language, Picard dialect of French language, French. It is used as a proper name and may refer to: Places * Le Quesnel, a commune the Somme department in France * Quesnel, British Columbia, a c ...
, Shuswap and Okanagan Highlands which flank the plateau to the east are sometimes seen as part of it, but are officially part of the
Columbia Mountains The Columbia Mountains are a group of mountain ranges along the upper Columbia River in British Columbia, Montana, Idaho and Washington. The mountain range covers 135,952 km² (52,491 sq mi). The range is bounded by the Rocky Mountain T ...
range-system and are seen as subranges of the adjoining ranges, namely the Cariboo Mountains and Monashee Mountains.


= Western System

= The Western System comprises the
Coast Mountains The Coast Mountains (french: La chaîne Côtière) are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbi ...
, the Canadian portion of the Cascade Mountains (known in the US as the Cascade Range), the southeasternmost
Saint Elias Mountains The Saint Elias Mountains (french: Chaîne Saint-Élie) are a subgroup of the Pacific Coast Ranges, located in southeastern Alaska in the United States, Southwestern Yukon and the very far northwestern part of British Columbia in Canada. The r ...
and the Coastal Trough, which includes the
Georgia Depression The Georgia Depression is a depression in the Pacific Northwest region of western North America. The depression includes the lowland regions of southwestern British Columbia and northwestern Washington along the shores of the Salish Sea. Format ...
and its subunit the Fraser Lowland and other low-lying coastal areas. The Western Mountain System's
Coast Mountains The Coast Mountains (french: La chaîne Côtière) are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbi ...
are the westernmost range of the Pacific Cordillera, running along the western shore of the North American continent, extending south from the Alaska Panhandle and covering most of coastal British Columbia. The range is covered in dense temperate rainforest on its western exposures, the range rises to heavily glaciated peaks, including the largest temperate-latitude icefields in the world, and then tapers to the dry Interior Plateau on its eastern flanks, or to the subarctic boreal forest of the Skeena Mountains and Stikine Plateau.
Mount Waddington Mount Waddington, once known as Mystery Mountain, is the highest peak in the Coast Mountains of British Columbia, Canada. Although it is lower than Mount Fairweather and Mount Quincy Adams, which straddle the United States border between Ala ...
(4016 m) is the highest mountain within B.C. and
Fairweather Mountain Mount Fairweather (officially gazetted as Fairweather Mountain in Canada but referred to as Mount Fairweather), is the highest mountain in the Canadian province of British Columbia, with an elevation of . It is located east of the Pacific Ocean ...
in the
Fairweather Range The Fairweather Range is the unofficial name for a mountain range located in the U.S. state of Alaska and the Canadian province of British Columbia. It is the southernmost range of the Saint Elias Mountains. The northernmost section of the range ...
of the
Saint Elias Mountains The Saint Elias Mountains (french: Chaîne Saint-Élie) are a subgroup of the Pacific Coast Ranges, located in southeastern Alaska in the United States, Southwestern Yukon and the very far northwestern part of British Columbia in Canada. The r ...
on the B.C. and Alaska border has the highest point. Much of the B.C. coast has a fjord scenery, due to the many islands along the Pacific coast being the highest points of a partly submerged mountain range.


= Insular System

= The Insular System comprises the Insular Mountains, which include the Vancouver Island Ranges and Queen Charlotte Mountains as well as the Nanaimo Lowland, Nahwitti Lowland and Hecate Depression.


Geology and orogeny

The younger ranges of the Canadian Rockies were uplifted during the late Cretaceous period (145 million-66 million years ago) and are a relatively new, tall and uneroded mountain range., During the last glaciation of the current
ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gre ...
, all of British Columbia was covered by ice (except
Haida Gwaii Haida Gwaii (; hai, X̱aaydag̱a Gwaay.yaay / , literally "Islands of the Haida people") is an archipelago located between off the northern Pacific coast of Canada. The islands are separated from the mainland to the east by the shallow Heca ...
and
Brooks Peninsula ''Parts of this article have been adapted from thBC Parks website'' Mquqʷin/Brooks Peninsula Provincial Park is a provincial park located on the west coast of Vancouver Island in British Columbia, Canada. History As a result of land-use pl ...
).
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Statistics Canada
'


Volcanoes

Although little-known to the general public, British Columbia is home to a huge area of
volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates ...
es and volcanic activity in the Pacific Ring of Fire. Several mountains that many British Columbians look at every day are dormant volcanoes. Most of them have erupted during the Pleistocene and Holocene. Although none of Canada's volcanoes are currently erupting, several volcanoes, volcanic fields, and volcanic centers are considered potentially active, 49 of which have erupted in the past 10,000 years and many of which have been active in the past two million years. There are hot springs at some volcanoes while 10 volcanoes in British Columbia appear related to seismology, seismic activity since 1975, including: Mount Silverthrone, Mount Meager massif, Wells Gray-Clearwater volcanic field, Mount Garibaldi, Mount Cayley, Castle Rock (volcano), Castle Rock, The Volcano (British Columbia), The Volcano, Mount Edziza, Hoodoo Mountain and Crow Lagoon. Numerous shield volcanoes developed during the Tertiary period in north-central British Columbia and some were active intermittently to recent times. Mount Edziza and Level Mountain are most spectacular examples. Mount Edziza is a stratovolcano consisting of a basal shield of basaltic flows surmounted by a central vent and flanked by numerous satellite cones, ash beds and blocky lavas. The complex has a long history of volcanic eruption that began about 10 million years ago and ended about 1300 years ago. The volcanoes are grouped into four volcanic belts with different tectonic settings. The Garibaldi Volcanic Belt is a north–south range of volcanoes in southwestern British Columbia. It is the northern extension of the Cascade Volcanoes, Cascade Volcanic Arc in the United States and contains the most explosive young volcanoes in Canada. It was formed by subduction of the Juan de Fuca Plate at the Cascadia subduction zone. Eruption styles within the belt range from effusive eruption, effusive to explosive eruption, explosive, with compositions from basalt to rhyolite. The most recent major catastrophic eruption was the 2350 BP eruption of the Mount Meager massif. It produced an eruption column, ash column at least 20 km high into the stratosphere and dammed the Lillooet River with breccia. The Anahim Volcanic Belt is an east–west line of volcanoes. These volcanoes probably formed when the North American Plate moved over the Anahim hotspot. The hotspot (geology), hotspot is considered similar to the one feeding the Hawaiian Islands. The last volcanic eruption within the belt was about 7000 years ago at a small cinder cone called Nazko Cone. The Northern Cordilleran Volcanic Province (sometimes called the Stikine Volcanic Belt) is the most active volcanic region in Canada, containing more than 100 volcanoes. Several eruptions are known to have occurred within this region in the past 400 years and contains Canada's largest volcanoes. It formed as a result of geologic fault, faulting, Fracture, cracking, rifting and the interaction between the Pacific Plate, Pacific and the North American Plate, North American plates. The Chilcotin Group in southern British Columbia is thought to have formed as a result of back-arc basin, back-arc extension behind the Cascadia subduction zone. The Wells Gray-Clearwater volcanic field in southeastern British Columbia consists of numerous small, basaltic volcanoes and extensive lava flows. Many individual volcanoes in the field have been active for the last 3 million years during which time the region was covered by thick glacial ice at least twice, prior to the well known Fraser Glaciation (also known as the Wisconsin Glaciation). The origin of the volcanism is yet unknown but is probably related to crust (geology), crustal thinning. The last eruption in the field was at Kostal Cone in 1500. Volcanism within the field has also created the -high Helmcken Falls, which is the fourth highest waterfall in Canada. It owes its foundation to the deposits of volcanic rock that were placed down in the wide valley of the Murtle River. Layer upon layer of fresh lava created flat areas, over which enormous floods flowed during the last
ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gre ...
. These floods shaped the upright cliff in the lava flows over which the river now flows. The protection of Helmcken Falls was one of the major causes for the development of Wells Gray Provincial Park. As a result, if it had not been for the volcanic eruptions, it is not likely that such a large wilderness region would have been made.


Water

The Fraser River forms an important transportation corridor when it drains much of central and southern British Columbia flowing to the Pacific Ocean. Other major rivers include the upper Columbia River and the Kootenay River. In northern B.C. the Stikine River, Stikine, Nass River, Nass and Skeena Rivers flow toward the Pacific Ocean, and Peace River (Canada), Peace River flows northeast toward the Arctic Ocean. Hydroelectric resources in B.C. are highly developed, and pulp and paper and lumber mills are common throughout the province. The Fraser, Nass, and Skeena Rivers have not been dammed in order to protect the salmon runs on them. Rivers and their valleys have for a long time provided routes through the mountains for people in B.C. Long, narrow lakes are found throughout the valleys of the British Columbia Interior, Southern and Central Interior. Among these are Atlin Lake, Atlin, Kootenay Lake, Kootenay, Okanagan Lake, Okanagan, Quesnel Lake, Quesnel, and Shuswap Lakes. Several high dams have impounded large reservoir lakes like Kinbasket Lake, particularly on the Columbia (see Hydroelectric dams on the Columbia River) and Peace Rivers. Williston Lake, on the Peace River, is the province's largest body of freshwater.
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Statistics Canada
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Environment Canada
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anglersatlas.com
'


Climate

Because of the many mountain ranges and rugged coastline, British Columbia's climate varies dramatically across the province. Coastal southern British Columbia has a mild, rainy oceanic climate, influenced by the North Pacific Current, which has its origins in the Kuroshio Current. Hucuktlis Lake on
Vancouver Island Vancouver Island is an island in the northeastern Pacific Ocean and part of the Canadian province of British Columbia. The island is in length, in width at its widest point, and in total area, while are of land. The island is the largest by ...
receives an average of of rain annually, and some parts of the area are even classified as warm-summer Mediterranean climate, Mediterranean, some of the northernmost occurrences in the world. In Victoria, British Columbia, Victoria, the annual average temperature is , the warmest in Canada. Due to the blocking presence of successive mountain ranges, the climate of some of the interior valleys of the province is semi-arid with certain locations receiving less than in annual precipitation.


South Coast

The climate of the coast of British Columbia is generally oceanic (''Cfb''). The winters are very cloudy, cool, and extremely rainy, although generally above freezing, and the summers are cool and comparatively drier with temperatures generally between . Precipitation is generally around , falling on around 200 days. Coastal fog develops on many days, especially in winter, with sunshine around 1400 hours a year. The exception to British Columbia's wet and cloudy winters is during the El Niño phase. During El Niño events, the jet stream is much farther south across North America, making the province's winters milder and drier than normal. Winters are much wetter and cooler during the opposite phase, La Niña.


Lower Mainland

Like regions of San Francisco and southern California, the
Lower Mainland The Lower Mainland is a geographic and cultural region of the mainland coast of British Columbia that generally comprises the regional districts of Metro Vancouver and Fraser Valley. Home to approximately 3.05million people as of the 2021 Cana ...
exhibits a variety of microclimates. Here, the winters are cloudy, cool, and rainy, while the summers are varied across the region. For example, Delta, British Columbia, Delta on the southwest tip of the region has summer highs of , while inland regions like Abbotsford, British Columbia, Abbotsford and Chilliwack have summers up to and occasionally above . Precipitation is between . Sunshine ranges from 1500 to 2000 hours.


Southwest Interior

Here, the winters are comparatively colder, with temperatures between , but still very mild for inland locations. Conversely, summer temperatures are the highest in Canada, generally between . Regional averages range from in higher elevations up to in Osoyoos, which has the hottest daytime high temperature in Canada. Although the days are hot, the humidity is low and nights are very cool, reaching in summer. These regions are typically very dry, with some regions receiving less than on around 100 days, strongly contrasting with some of the wettest regions in the world on the coast. In spite of the arid climate, temperature inversions are often created in winter which reduces sunshine to just 1700 to 2000 hours a year, exceptionally little for the dryness.


Southeast Interior

This region, situated further to the east, typically has similar weather to the southwest interior, although with cooler and wetter conditions due to orographic lift and higher elevation. The winters are between , while the summers are .


Cariboo

This region typically has cooler weather due to increased latitude and altitude, but is still generally warmer than much of Canada at similar latitudes. Here, the winters are between , while summers are between .


North Coast

The North Coast of British Columbia typically has winters that are remarkably similar to the southern Coast, but with much cooler summers between . It is also very wet, with of precipitation a year falling on around 230 days. The North Coast is one of the cloudiest places in Canada, with Stewart, British Columbia having only 985 hours of sun a year.


Northeast

The northeast of the province is the only region east of the
Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico ...
, causing conditions similar to the rest of Canada and similar to neighbouring Alberta. Winters are while summers are .


Parks and Protected Areas

There are 14 designations of parks and protected areas in the province that reflect the different administration and creation of these areas in a modern context. There are 141 Ecological Reserves, 35 Provincial Marine Parks, 7 Provincial Heritage Sites, 6 National Historic Sites, 4 National Parks and 3 National Park Reserves. 12.5% (114,000 km2) of BC is currently considered 'protected' under one of the 14 different designations that includes over 800 distinct areas. British Columbia contains seven of National Parks of Canada, Canada's national parks: * Glacier National Park (Canada), Glacier National Park * Gulf Islands National Park Reserve * Gwaii Haanas National Park Reserve and Haida Heritage Site * Kootenay National Park * Mount Revelstoke National Park * Pacific Rim National Park Reserve * Yoho National Park BC also contains a large network of provincial parks, run b
BC Parks
of the Ministry of Environment and Climate Change Strategy. In addition to parks, British Columbia also protects approximately 47,000 square kilometers of agricultural land via the Agricultural Land Reserve.


Ecoregions


Environment Canada system

Environment Canada subdivides British Columbia into a system of Ecozones of Canada, ecozones, each containing smaller ecoregions. The ecozones within British Columbia include the Pacific Marine Ecozone (CEC), Pacific Marine, Pacific Maritime Ecozone (CEC), Pacific Maritime, Boreal Cordillera Ecozone (CEC), Boreal Cordillera, Montane Cordillera Ecozone (CEC), Montane Cordillera, Taiga Plains Ecozone (CEC), Taiga Plains, and Boreal Plains Ecozone (CEC), Boreal Plains Ecozones. The system used was established by the trilateral Commission for Environmental Cooperation and as such is parallel to that used by the Environmental Protection Agency in the United States, though their system uses different names for the same ecozones and ecoregions, and to a similar ecoregional subdivision of Mexico.


World Wildlife Fund system

In an ecoregion system advanced by the World Wildlife Fund, British Columbia's ecosystems are divided on five different levels, each classifying the area on a progressively more detailed basis. At the top level
ecodomains
delineate areas of broad climatic uniformity across the world. The ecodomains are then divided int

which delineate areas of broad climatic and physiographic uniformity. Next, the ecodivisions are divided int

which consider climate, oceanography, relief and regional landforms. The ecoprovinces are then divided int

which consider major physiographic and minor macroclimatic or oceanographic variations. Finally, the ecoregions are divided int

for minor physiographic and macroclimatic or oceanographic variations. Overall, B.C. is divided into 4 large ecodomain areas which are progressively divided down into 114 small ecosections.


Biogeoclimatic Zones of British Columbia

The Executive Council of British Columbia, British Columbia Ministry of Forests and Range subdivides the province's ecoregions into Biogeoclimatic zones of British Columbia, a system of biogeoclimatic zones: * Coastal Western Hemlock Zone: Wet, mossy, dense temperate rain forests of Western Hemlock, Thuja plicata, Western Redcedar, Pacific Silver Fir, Pacific Silver (Amabilis) Fir, Callitropsis nootkatensis, Yellow Cedar, Coast Douglas-fir, Grand Fir, Sitka Spruce, and Western White Pine, Bigleaf Maple, Alnus rubra, Red Alder, Polystichum munitum, sword fern, devil's club, and red huckleberry predominate on the west coast of Vancouver Island, the west coast of the mainland north of the Fraser River delta to north of Prince Rupert, British Columbia, Prince Rupert, farther inland along the Fraser Valley, Fraser and Skeena River Valleys, and on
Haida Gwaii Haida Gwaii (; hai, X̱aaydag̱a Gwaay.yaay / , literally "Islands of the Haida people") is an archipelago located between off the northern Pacific coast of Canada. The islands are separated from the mainland to the east by the shallow Heca ...
. This zone was the original focus of British Columbia's forest industry; and most of the trees have been harvested at least once. There has been much effort (some successful) to protect the remaining old growth forest from logging. * Coast Douglas-fir Zone: A drier region of temperate forest, this is the smallest and most heavily populated biome of the province. It encompasses the southern and most of the eastern coastal fringe of Vancouver Island, the Fraser River delta, the
Gulf Islands The Gulf Islands are a group of islands in the Salish Sea between Vancouver Island and the mainland coast of British Columbia. Etymology The name "Gulf Islands" comes from "Gulf of Georgia," the original term used by George Vancouver in his ...
, and parts of the Sunshine Coast, British Columbia, Sunshine Coast. Trees unique to this area include the Arbutus, Garry oak, and manzanita. * Rocky Mountain Douglas-fir, Interior Douglas-fir–Montane–Ponderosa Pine–Bunchgrass Zones: The dry valleys and plateaus of BC's southern interior, stretching from the lower reaches of the Chilcotin Plateau, across the southern
Cariboo The Cariboo is an intermontane region of British Columbia, Canada, centered on a plateau stretching from Fraser Canyon to the Cariboo Mountains. The name is a reference to the caribou that were once abundant in the region. The Cariboo was t ...
, and south through the Okanagan. A separate, isolated region exists in the Kootenays, East Kootenay. This region encompasses the Fraser Canyon, the lower Thompson River, and the Nicola River, Nicola and Similkameen River, Similkameen drainage basin, watersheds. It is characterised by treeless bunchgrass steppes, sagebrush scrub, and open forests of Ponderosa Pine, Rocky Mountain Douglas-fir, trembling aspen, Lodgepole Pine, and Western Larch. Much of the area is used for timber harvesting, ranching, and orchard-growing. The winters are cold and dry, and the summers are hot and drier. * Interior Thuja plicata, Redcedar-Western Hemlock Zone: An interior wetbelt, similar to the Coastal Western Hemlock Zone, is found in the low to middle elevations of the
Columbia Mountains The Columbia Mountains are a group of mountain ranges along the upper Columbia River in British Columbia, Montana, Idaho and Washington. The mountain range covers 135,952 km² (52,491 sq mi). The range is bounded by the Rocky Mountain T ...
in southeastern British Columbia, west of the Rocky Mountains, Rockies, as well as north in the Nass River, Nass and Skeena River drainages. The cool, wet winters and warm, moist summers produce the greatest plant diversity of any zone in the province. Western Hemlock and Thuja plicata, Western Redcedar predominate, but Grand Fir, Western Larch, White Spruce, Engelmann Spruce, balsam poplar, black cottonwood, trembling aspen, Western White Pine, and Subalpine Fir are also common, depending on the elevation. The dense and diverse forests make this zone the second most productive forest zone in British Columbia and Canada. * Sub-Boreal (Hemiboreal) Spruce and Pine-Spruce Zones: The central interior of the province, consisting of the rolling lake-studded terrain of the
Cariboo The Cariboo is an intermontane region of British Columbia, Canada, centered on a plateau stretching from Fraser Canyon to the Cariboo Mountains. The name is a reference to the caribou that were once abundant in the region. The Cariboo was t ...
— the Fraser and Nechako Plateaus — is characterised by severe, snowy winters and warm, short summers. This is a transitional zone between southern and northern biomes. Seral species include Lodgepole Pine, Rocky Mountain Douglas-fir, and trembling aspen; mature species include White Spruce, White and Engelmann Spruce, and Subalpine Fir. The moderately dense forests are interrupted in places by ponds and muskeg. The generally flat plateaus make this an active area for logging. * Boreal ecosystem, Boreal Zones: The northern third of the province is dominated by long, cold winters, and short, warm summers. This is a vast, largely unpopulated region, with isolated logging and mining activity. White Spruce, Black Spruce, Lodgepole Pine, trembling aspen, Tamarack Larch, and Paper Birch predominate among the meadows and muskeg of the Peace River (Canada), Peace and Liard River, Liard Plains. At higher elevations, the winters are harsher, the summers briefer, and White Spruce and Subalpine Fir give way to scrub willow and birch. * Mountain Zones: At higher elevations (above about 850 m on the southwest coast, less as one goes farther inland and north), the summers are shorter and the winters are colder. Along the coast, the lush, diverse forests give way to more uniform stands of Mountain Hemlock, Pacific Silver Fir, Pacific Silver (Amabilis) Fir, and Callitropsis nootkatensis, Yellow Cedar. These are interrupted by subalpine heath (habitat), heaths, meadows, and fens. In the drier, interior regions, the higher elevations are marked by Engelmann Spruce, Subalpine Fir, Subalpine Larch, and Lodgepole Pine, the trees clumped among meadows and grassland.


Floristic province

In botany, nearly all of British Columbia is part of the Rocky Mountain Floristic Province.


Political geography

Founded as several colonies as part of the British Empire, the political geography is complicated by the fact that during colonization no treaties or conquests of First Nations (the indigenous people) occurred outside of a few small areas of the province. The resulting legal and political system is based upon the British, and later Canadian state that evolved from it. At present much of the province is subject to contested title and political rights with First Nations. The issue used to be called the Indian Land Question, though the term is no longer used. On-going disputes have included protest, political activity and legal challenges, including the recent Supreme Court of Canada decision recognizing title to one group (Tsilhqot'in Nation v British Columbia). British Columbia is divided into defined regions for various political purposes. One is for the purpose of providing local government services in various ways. Among the most important subdivisions of the province are forest regions and forest districts, which have jurisdiction over forests and their management, and also rangeland, range and grazing leases, and also manage Ministry of Forests recreation sites and campgrounds. Other important subdivisions are Ministry of Environment regions (which controls water rights and management, environmental oversight, pesticide and herbicide permits, the British Columbia Conservation Officer Service and Fish and Wildlife Branch; the List of British Columbia provincial parks, provincial parks are managed by a sub-department of the Ministry of Environment, BC Parks), Health regions of Canada#British Columbia, health regions (which administer health funding, hospitals and ambulance services), List of school districts in British Columbia, school districts (whose taxation authority is distinct from that of regional districts and organized by tax assessment areas), and mining districts (whose authority under the Mines Act supersedes nearly all other jurisdictions). The Ministry of Tourism also has a system of tourism regions, and the Ministry of Industry, Trade and Small Business Development divides the province into development regions, with BC Stats using a different regionalization system than that of Statistics Canada, which uses regional district boundaries to organize its data. Also very important is a system of Regional Management Planning Boards, which are "roundtable"-type planning authorities on which local stakeholders ranging from taxpayer and industry groups, municipalities and chambers of commerce, Ministry of Forests and Ministry of Environment/BC Parks and in some cases First Nations hammer out long-range plans for regional land-use management. The provincial judicial system also subdivides the province into Counties of British Columbia, counties, though this is mostly only procedural and does not impact directly on daily life. All such regions and underlying title and survey descriptions are organized by land districts, which are the cadastral survey system underlying all legal descriptions in the province and date from the original Lands Act in the days of the Colony of British Columbia (1858–1866), Colony of British Columbia and Colony of Vancouver Island.


Local government

In the case of municipal-type services, there are municipalities, which are incorporated areas, and regional districts, which are groups of member municipalities and rural areas. Another purpose is for the provision of provincial services. The provincial government has dividing certain services into regional services, such as health authorities and agricultural commissions, which administer specified regions according to their own policies. The province is also divided to provide electoral districts by Elections BC for provincial elections and Elections Canada for federal elections. In addition to these, Indian Reserves have been established throughout the province but are administered by the federal government. In order to fund community-wide services, such as a sewer system, urban areas incorporate to form municipalities. The vast majority of British Columbians live in these municipalities but there are also large areas of unincorporated rural areas around the municipalities. In 1964 the provincial government created regional districts, through amendments to the Municipal Act, to better coordinate regional issues and provide community services to unincorporated areas. Only one area, the sparsely populated Stikine Region in northwest B.C., is not covered by a regional district and municipal-type powers are administered directly by the provincial government. The Stikine Region has a permanent population of only 1,352 people, most of them aboriginal, and covers an area of 135,391 square kilometers with no municipalities within its borders. its only major towns being Atlin, British Columbia, Atlin and Telegraph Creek. Most planning in that region is governed by the Ministry of Energy, Mines and Petroleum Resources (forestry is only a small player in the region's economy as yet). All the regional districts and municipalities are members of the Union of British Columbia Municipalities. The former Sechelt Indian Band is now a municipal-type government, the Sechelt Indian Government District, and former Indian Reserves are now fee-simple lands within that effective municipality.


Regional districts

Since 1966–67, British Columbia has been segmented into 27 regional districts as a way of extending municipal powers outside of municipalities. These regional districts are governed by boards composed of representatives of member municipalities and electoral areas. The unincorporated area of the regional district is segmented into electoral areas. Each electoral area elects one director who sits on the Regional Board and the Electoral Area Directors Committee. The Islands Trust acts similar to a regional district for most of the unincorporated islands in the Gulf of Georgia between the Mainland and Vancouver Island, which are part of various regional districts though the Islands Trust supersedes them in planning and zoning authority. The regional districts are used to provide local government services (mostly zoning, building inspection, etc.) to unincorporated areas, sub-regional services (e.g. street bridge over a border) between two or more members, regional parks, and regional services (e.g. funding the regional hospital district) required for the entire area. Also, as a collection of municipalities they are able to borrow funds for capital projects at lower interest rates.


Municipalities

There are over 150 Municipality, municipalities in British Columbia. They are divided into cities, districts, towns and villages, according to their population at the time of their incorporation. There are also three other municipalities that were incorporated for special purposes. These are the Resort Municipality of Whistler, Sechelt Indian Government District, and Bowen Island Municipality. With the exception of the City of Vancouver all municipalities attain their legislative powers from the Local Government Act (formerly the Municipal Act), which is being replaced, in phases, by the Community Charter.Legislative Assembly of British Columbia
The City of Vancouver obtains its legislative authority from the Vancouver Charter.


Indian reserves & band governments

British Columbia has a large number of List of Indian Reserves in British Columbia, Indian Reserves which are outside the municipal and regional district systems and are self-governing by numerous List of First Nations governments in British Columbia, band governments, most of which belong to tribal councils, which is an association of bands with common interests and not governments as such. Many bands claim sovereignty, having signed no treaties to surrender title.


Provincial electoral districts

For representation in the Legislative Assembly of British Columbia, Legislative Assembly B.C. is segmented into 87 electoral districts. Each one of these ridings elects one candidate to become its Member of the Legislative Assembly (MLA) in a first past the post race contained within the electoral district. Patterns of voting established by the right-wing predecessors of the BC Liberal Party, the British Columbia Social Credit Party, BC Social Credit Party and the wartime Liberal-Conservative Coalition dominated provincial politics for much of the latter part of the twentieth century and enjoyed power bases on Vancouver's West Side, Victoria's richer suburbs, on the south bank of the Fraser Valley and in the Okanagan and the province's Central Interior and Northeast. The New Democratic Party has traditionally drawn its support from more urbanized areas such as Vancouver and Victoria, as well as the North Coast and northwest Interior, plus the mining towns of the Kootenays and key areas of Vancouver Island. Swing areas include the BC Interior, certain urban areas within the Lower Mainland (like Surrey) and certain rural areas (like in southeastern BC).


Federal electoral districts

The province of British Columbia currently has 42 electoral districts represented in the House of Commons of Canada. Regional voting patterns are similar to those for provincial ridings, except that many voters vote differently federally than they do provincially, particularly on the right.


See also

* Outline of British Columbia#Geography of British Columbia, Outline of British Columbia geography * List of islands of British Columbia


Notes


References


External links


Biogeoclimatic Zones of British Columbia





Land Cover

Relief Map of British Columbia

Ecoregions of British Columbia



British Columbia: BCStats

Erica A. Massey: A Comparative Study of Glaciovolcanic Palagonitization of Tholeitic and Alkaline Sideromelane in Helgafell, Icland, and Wells Gray-Clearwater Volcanic Filed, BC, Canada. B.Sc., The University of British Columbia, 2014
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