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100-537: The river originates in the Cascade Range near Mount Daniel and flows generally south, through Hyas Lake. The river is joined by many tributary streams including Waptus River and Cooper River draining from Cooper Lake , after which it enters Cle Elum Lake . Although a natural lake, Cle Elum Lake's water level and discharge is controlled by Cle Elum Dam, a 165-foot (50 m) high earthfill structure built in 1933. The dam and lake are managed for irrigation purposes by

200-549: A 110-metre (360 ft) tunnel under the border between British Columbia and Washington , intended for the use of smuggling marijuana , the first such tunnel known on this border. From 2007 to 2010, 147 people were arrested for smuggling marijuana on the property of a bed-and-breakfast in Blaine, Washington, but agents estimate that they caught only about 5% of smugglers. Because of its location, Cornwall, Ontario , experiences ongoing smuggling—mostly of tobacco and firearms from

300-507: A Canadian province or territory, or an enhanced identification/photo card issued by a Canadian province or territory. Several other documents may be used by Canadians to identify their citizenship at the border, although the use of such documents requires it to be supported with additional photo identification. American and Canadian citizens who are members of a trusted traveler program such as FAST or NEXUS, may present their FAST or NEXUS card as an alternate form of identification when crossing

400-633: A birth certificate and driver's license/government-issued identification card when crossing the Canada–United States border. However, in late 2006, the U.S. Department of Homeland Security (DHS) announced the final rule of the Western Hemisphere Travel Initiative (WHTI), which pertained to new identification requirements for travelers entering the United States. This rule, which marked the first phase of

500-743: A border closure caused by the COVID-19 pandemic in 2020. In response to the COVID-19 pandemic in Canada and the United States , the governments of Canada and the United States agreed to close the border to "non-essential" travel on March 21, 2020, for an initial period of 30 days. The closure was extended 15 times. In mid-June 2021, the Canadian government announced it would ease some entry requirements for fully vaccinated Canadian citizens, permanent residents, and foreign nationals starting on July 5. The closure finally expired on July 21. In mid-July,

600-646: A border, the flatness of the terrain made it difficult to locate this line. The treaty extinguished British claims to the south of the 49th in the Red River Valley , which was part of Rupert's Land . The treaty also extinguished U.S. claims to land north of the 49th in the watershed of the Missouri River , which was part of the Louisiana Purchase . Along the 49th parallel, the border vista is theoretically straight, but in practice follows

700-489: A chain of volcanoes (the Cascade Volcanic Arc) above the subduction zone. Soil conditions for farming are generally good, especially downwind of volcanoes . This is largely because volcanic rocks are often rich in potassium -bearing minerals such as orthoclase , and erode relatively easily. Volcanic debris, especially lahars , also helps to spread mineral-rich volcanic material, and the storage of water in

800-577: A few wolf packs returning from Canada live in the Cascades. Fewer than 50 grizzly bears reside in the Cascades of Canada and Washington. Canada%E2%80%93United States border The Canada–United States border is the longest international border in the world. The boundary (including boundaries in the Great Lakes , Atlantic, and Pacific coasts) is 8,891 km (5,525 mi) long. The land border has two sections: Canada 's border with

900-602: A few strikingly large volcanoes, like Mount Hood and Mount St. Helens, that dominate the landscape. The Cascade volcanoes define the Pacific Northwest section of the Ring of Fire , an array of volcanoes that rim the Pacific Ocean. The Ring of Fire is also known for its frequent earthquakes. The volcanoes and earthquakes arise from a common source: subduction , where the dense Juan de Fuca Plate plunges beneath

1000-620: A fur trader with the North West Company , seeking a viable route across the mountains, explored and crossed the northern Cascades between Fort Okanogan and Puget Sound. His report of the journey is vague about the route taken. He followed the lower Methow River into the mountains. He might have used Cascade Pass to reach the Skagit River . Ross was the first European-American to explore the Methow River area and likely

1100-419: A land or sea port-of-entry (including ferries ) has been required to present one of the above forms of identification to enter the United States. Conversely, to cross into Canada, a traveler must also carry identification, as well as a valid visa (if necessary) when crossing the border. Forms of identification include a valid passport, a Canadian Emergency Travel Document, an enhanced driver's license issued by

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1200-455: A national record single-season snowfall in the winter of 1998–99 with 1,140 inches (2,900 cm) (= 95 feet (29 m)). Before that year, Mount Rainier held the American record for snow accumulation at Paradise in 1978. It is not uncommon for some places in the Cascades to have over 500 inches (1,300 cm) of annual snow accumulation, such as at Lake Helen , near Lassen Peak. Most of

1300-583: A nearly continuous chain of mountain ranges (cordillera) that form the western "backbone" of North, Central , and South America . The Cascades are home to many national parks and protected areas, including North Cascades National Park , Mount Rainier National Park , Crater Lake National Park , and Lassen Volcanic National Park . The northern half of the Pacific Crest Trail follows the range. The Cascades extend northward from Lassen Peak (also known as Mount Lassen) in northern California to

1400-405: A process that made their crossing more tedious, believing it violated their treaty rights of free passage. When traveling from the U.S. to Cornwall Island , they must first cross a second bridge into Canada, for inspection at the new Canadian border station. Discussions between inter-governmental agencies were being pursued on the feasibility of relocating the Canadian border inspection facilities on

1500-521: A sharp turn towards the northeast. The border then reaches the St. Lawrence River, proceeding through it until finally, at 45°00′N 74°40′W  /  45.000°N 74.667°W  / 45.000; -74.667 (between Massena, New York and Cornwall, Ontario ), the border splits from the river and continues into Quebec. The province of Quebec borders (west to east) the U.S. states of New York, Vermont , New Hampshire , and Maine , beginning where

1600-712: A traveler passes through the Cascade Range, the climate first gets colder, then warmer and drier east of the crest. Most of the Cascades' lower and middle elevations are covered in coniferous forest ; the higher altitudes have extensive meadows as well as alpine tundra and glaciers . The southern part of the Cascades are within the California Floristic Province , an area of high biodiversity . Silver fir predominates above 2500 ft, while there are moors , meadows , and mountain hemlock / subalpine fir groves from 4500 to 6000 ft on

1700-616: A visual height (height above nearby crestlines) of one mile or more. The highest peaks, such as the 14,411-foot (4,392 m) Mount Rainier, dominate their surroundings for 50 to 100 miles (80 to 161 km). The northern part of the range, north of Mount Rainier, is known as the North Cascades in the United States but is formally named the Cascade Mountains north of the Canada–United States border , reaching to

1800-619: A water boundary. It begins at the north-westernmost point of Minnesota's Northwest Angle ( 49°23′N 95°09′W  /  49.383°N 95.150°W  / 49.383; -95.150 ). From here, it proceeds eastward through the Angle Inlet into the Lake of the Woods , turning southward at 49°19′N 94°48′W  /  49.317°N 94.800°W  / 49.317; -94.800 (near Dawson Township, Ontario ) where it continues into

1900-762: Is an interpretive site there now at "The End of The Oregon Trail". The road was constructed as a toll road – $ 5 per wagon – and was very successful. In addition, the Applegate Trail was created to allow settlers to avoid rafting down the Columbia River. The Trail used the path of the California Trail to north-central Nevada . From there, the Trail headed northwest into northern California, and continued northwest towards today's Ashland, Oregon . From there, settlers would head north along

2000-544: Is as low as 9 inches (230 mm) on the eastern foothills due to a rain shadow effect. Beyond the eastern foothills is an arid plateau that was largely formed 17 to 14 million years ago by the many flows of the Columbia River Basalt Group . Together, these sequences of fluid volcanic rock form the 200,000-square-mile (520,000 km ) Columbia Plateau in eastern Washington, Oregon, and parts of western Idaho. The Columbia River Gorge

2100-414: Is no border zone ; the U.S. Customs and Border Protection routinely sets up checkpoints as far as 100 miles (160 km) into U.S. territory. In August 2020, the United States constructed 3.8 km (2.4 mi) of short cable fencing along the border between Abbotsford, British Columbia , and Whatcom County, Washington . Before 2007, American and Canadian citizens were only required to produce

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2200-616: Is the only major break of the range in the United States. When the Cascades began to rise 7 million years ago in the late Miocene , the Columbia River drained the relatively low Columbia Plateau. As the range grew, erosion from the Columbia River was able to keep pace, carving out the gorge and major pass seen today. The gorge also exposes uplifted and warped layers of basalt from the plateau. Before European exploration, First Nations tribes named many peaks, including "Wy'east" for Mount Hood , "Seekseekqua" for Mount Jefferson (Oregon) , "M'laiksini Yaina" for Mount McLoughlin , "Tahoma",

2300-642: The American Revolutionary War between Great Britain and the United States. In the second article of the Treaty, the parties agreed on all boundaries of the United States, including, but not limited to, the boundary to the north along what was then British North America . The agreed-upon boundary included the line from the northwest angle of Nova Scotia to the northwesternmost head of the Connecticut River and proceeded down along

2400-695: The Appalachian Mountains as it turns into the border of Maine. It continues to do so until 46°25′N 70°03′W  /  46.417°N 70.050°W  / 46.417; -70.050 (near Saint-Camille-de-Lellis, Quebec on the Canadian side, and unorganized territory on the American side), where it heads north, then northeastward at 46°41′N 69°59′W  /  46.683°N 69.983°W  / 46.683; -69.983 (near Lac-Frontière, Quebec ). Finally, at 47°27′N 69°13′W  /  47.450°N 69.217°W  / 47.450; -69.217 (near Pohénégamook , Quebec),

2500-490: The Baker River is dammed to form Lake Shannon and Baker Lake . The Cascades harbor a largely-untapped potential for geothermal power . The U.S. Geological Survey Geothermal Research Program has been investigating this potential. Some of this energy is already being used in places like Klamath Falls, Oregon , where volcanic steam is used to heat public buildings. The highest recorded underground temperature found in

2600-626: The Cascades Rapids in the Columbia River Gorge, a feature on the river now submerged beneath the Bonneville Reservoir . Before long, the great white-capped mountains that loomed above the rapids were called the "mountains by the cascades" and later simply as the "Cascades". The earliest attested use of the name "Cascade Range" is in the writings of botanist David Douglas in 1825. In 1814, Alexander Ross ,

2700-743: The Fairweather Glacier ), where the border heads northwestward towards the Coast Mountains . At 59°48′N 135°28′W  /  59.800°N 135.467°W  / 59.800; -135.467 (near Skagway, Alaska ), the border begins a general southeastward direction along the Coast Mountains. The border eventually reaches the Portland Canal and follows it outward to the Dixon Entrance , which takes

2800-665: The Hudson's Bay Company (HBC) at Fort Vancouver near today's Portland, Oregon . From this base HBC trapping parties traveled throughout the Cascades in search of beaver and other fur-bearing animals. For example, using what became known as the Siskiyou Trail , Hudson's Bay Company trappers were the first non-natives to explore the southern Cascades in the 1820s and 1830s, establishing trails which passed near Crater Lake , Mount McLoughlin , Medicine Lake Volcano , Mount Shasta , and Lassen Peak. The course of political history in

2900-653: The International Boundary Commission , which was charged with surveying and mapping the boundary. It also provided for the removal of British forces from Detroit , as well as other frontier outposts on the U.S. side. The Jay Treaty was superseded by the Treaty of Ghent (effective 1815) concluding the War of 1812 , which included pre-war boundaries. Signed in December 1814, the Treaty of Ghent ended

3000-527: The Lushootseed name for Mount Rainier, and "Louwala-Clough", meaning "smoking mountain" for Mount St. Helens. In early 1792, British navigator George Vancouver explored Puget Sound and gave English names to the high mountains he saw. Mount Baker was named for Vancouver's third lieutenant, Joseph Baker , although the first European to see it was Manuel Quimper , who named it la gran montaña del Carmelo ("Great Mount Carmel ") in 1790. Mount Rainier

3100-528: The North American Plate . As the oceanic slab sinks deep into the Earth's interior beneath the continental plate, high temperatures and pressures allow water molecules locked in the minerals of solid rock to escape. The water vapor rises into the pliable mantle above the subducting plate, causing some of the mantle to melt. This newly formed magma rises toward the Earth's surface to erupt, forming

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3200-809: The North Cascades , and the notable volcanoes known as the High Cascades . The small part of the range in British Columbia is referred to as the Canadian Cascades or, locally, as the Cascade Mountains . The highest peak in the range is Mount Rainier in Washington at 14,411 feet (4,392 m). The Cascades are part of the Pacific Ocean 's Ring of Fire , the ring of volcanoes and associated mountains around

3300-688: The Pacific Northwest saw the spine of the Cascade Range being proposed as a boundary settlement during the Oregon Dispute of 1846. The United States rejected the proposal and insisted on the 49th parallel north , which cuts across the range just north of Mount Baker. Throughout the period of dispute and up to the creation of the Crown Colony of British Columbia in 1858, the Hudson's Bay Company's York Factory Express route, as well

3400-809: The Rainy River . The border follows the River to Rainy Lake , then subsequently through various smaller lakes, including Namakan Lake, Lac la Croix , and Sea Gull Lake . The border then crosses the Height of Land Portage over the divide between the Hudson Bay drainage basin, and that of the Great Lakes. The boundary then follows the Pigeon River , which leads it out into Lake Superior. The border continues through Lake Superior and Whitefish Bay , into

3500-491: The Saint John River . The border moves through the River until 47°04′N 67°47′W  /  47.067°N 67.783°W  / 47.067; -67.783 (between Hamlin, Maine and Grand Falls, New Brunswick ), where it splits from the river. It heads southward to 45°56′N 67°47′W  /  45.933°N 67.783°W  / 45.933; -67.783 (near Amity, Maine ), from whence it follows

3600-638: The St. Clair River , leading it to Lake St. Clair . The border proceeds through Lake St. Clair, reaching the Detroit River , which leads it to Lake Erie , where it begins turning northeast. From Lake Erie, the border is led into the Niagara River , which takes it into Lake Ontario . From here, the boundary heads northwestward until it reaches 43°27′N 79°12′W  /  43.450°N 79.200°W  / 43.450; -79.200 , where it makes

3700-588: The St. Mary's River then the North Channel . At 45°59′N 83°26′W  /  45.983°N 83.433°W  / 45.983; -83.433 (between Drummond Township, Michigan to the west and Cockburn Island (Ontario) to the east), the border turns southward into the False Detour Channel , from which it reaches Lake Huron . Through the Lake, the border heads southward until reaching

3800-797: The United States Bureau of Reclamation as part of the Yakima Project. Below the dam, Cle Elum River continues south to join the Yakima River on the west side of the city of Cle Elum . This article related to a river in the state of Washington is a stub . You can help Misplaced Pages by expanding it . Cascade Range The Cascade Range or Cascades is a major mountain range of western North America , extending from southern British Columbia through Washington and Oregon to Northern California . It includes both non-volcanic mountains, such as many of those in

3900-631: The United States–Mexico border (which is one-third the length of the Canada–U.S. border), which is actively patrolled by U.S. Customs and Border Protection personnel to prevent illegal migration and drug trafficking . Parts of the International Boundary cross through mountainous terrain or heavily forested areas, but significant portions also cross remote prairie farmland and the Great Lakes and Saint Lawrence River, in addition to

4000-692: The contiguous United States to its south, and with the U.S. state of Alaska to its west. The bi-national International Boundary Commission deals with matters relating to marking and maintaining the boundary, and the International Joint Commission deals with issues concerning boundary waters. The agencies responsible for facilitating legal passage through the international boundary are the Canada Border Services Agency (CBSA) and U.S. Customs and Border Protection (CBP). The Treaty of Paris of 1783 ended

4100-765: The railway roadbed and the Othello Tunnels , now decommissioned, are popular tourist recreation destinations for hiking and bicycling. The pass is used by the Coquihalla Highway , a government megaproject built as part of the Expo 86 spending boom of the 1980s, which is now the main route from the Coast to the British Columbia interior. Traffic formerly went via the Fraser Canyon , to the west, or via Allison Pass and Manning Park along Highway 3 to

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4200-599: The 19th-century surveyed border markers and varies by several hundred feet in spots. Disputes over the interpretation of the border treaties and mistakes in surveying required additional negotiations, which resulted in the Webster–Ashburton Treaty of 1842. The treaty resolved the Aroostook War , a dispute over the boundary between Maine , New Brunswick , and the Province of Canada . The treaty redefined

4300-663: The British team. This survey focused on the border from the Lake of the Woods to the summit of the Rocky Mountains. In 1903, following a dispute that arose because of the Klondike Gold Rush , a joint United Kingdom–Canada–U.S. tribunal established the boundary of southeast Alaska . On April 11, 1908, the United Kingdom and the United States agreed, under Article IV of the Treaty of 1908 "concerning

4400-434: The CBP on the Northern border that adversely affect enforcement actions; the U.S. Border Patrol "identified an insufficient number of agents that limited patrol missions along the northern border" while CBP Air and Marine Operations "identified an insufficient number of agents along the northern border, which limited the number and frequency of air and maritime missions." There are eight U.S. Border Patrol sectors based on

4500-415: The Canada–U.S. border, each covering a designated "area of responsibility"; the sectors are (from west to east) based in Blaine, Washington ; Spokane, Washington ; Havre, Montana ; Grand Forks, North Dakota ; Detroit, Michigan ; Buffalo, New York ; Swanton, Vermont ; and Houlton, Maine . Following the September 11 attacks in the United States, security along the border was dramatically tightened by

4600-482: The Canadian border. Smuggling of alcoholic beverages ( "rum running" ) was widespread during the 1920s, when Prohibition was in effect nationally in the United States and parts of Canada . In more recent years, Canadian officials have brought attention to drug , cigarette , and firearm smuggling from the United States, while U.S. officials have made complaints of drug smuggling via Canada. In July 2005, law enforcement personnel arrested three men who had built

4700-423: The Canadian government announced that fully vaccinated American citizens and permanent residents could visit Canada starting August 9. The American government reopened its land border to fully vaccinated Canadian citizens effective November 8. The 2020–21 closure was reportedly the first long-term blanket closure of the border since the War of 1812. Business advocacy groups, noting the substantial economic impact of

4800-522: The High Cascades are therefore white with snow and ice year-round. The western slopes are densely covered with Douglas-fir ( Pseudotsuga menziesii ), western hemlock ( Tsuga heterophylla ) and red alder ( Alnus rubra ), while the drier eastern slopes feature mostly ponderosa pine ( Pinus ponderosa ), with some western larch ( Larix occidentalis ), mountain hemlock ( Tsuga mertensiana ) and subalpine fir ( Abies lasiocarpa ) and subalpine larch ( Larix lyallii ) at higher elevations. Annual rainfall

4900-431: The Ontario-New York border ends in the St. Lawrence River at the 45th parallel north . The Quebec-New York border heads inland towards the east, remaining on or near the parallel, becoming the border of Vermont . At 45°00′N 71°30′W  /  45.000°N 71.500°W  / 45.000; -71.500 (the tripoint of Vermont, New Hampshire , and Quebec), the border begins to follow various natural features of

5000-400: The Pacific Ocean. All of the eruptions in the contiguous United States over the last 200 years have been from the Cascade Volcanoes . The two most recent were Lassen Peak from 1914 to 1921 and a major eruption of Mount St. Helens in 1980 . Minor eruptions of Mount St. Helens have also occurred since, most recently from 2004 to 2008. The Cascade Range is a part of the American Cordillera ,

5100-650: The U.S. Residents of both nations who own property adjacent to the border are forbidden to build within the 6-metre-wide (20 ft) boundary vista without permission from the International Boundary Commission. They are required to report such construction to their respective governments. All persons crossing the border are required to report to the customs agency of the country they have entered. Where necessary, fences or vehicle blockades are used. In remote areas, where staffed border crossings are not available, there are hidden sensors on roads, trails, railways, and wooded areas, which are located near crossing points. There

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5200-411: The U.S. side of the border. In August 2017, the border between Quebec and New York saw an influx of up to 500 irregular crossings each day, by individuals seeking asylum in Canada. As a result, Canada increased border security and immigration staffing in the area, reiterating the fact that crossing the border irregularly did not affect one's asylum status. From the beginning of January 2017 up until

5300-494: The U.S. state of Alaska , beginning at the Beaufort Sea at 69°39′N 141°00′W  /  69.650°N 141.000°W  / 69.650; -141.000 and proceeding southwards along the 141st meridian west . At 60°18′N, the border proceeds away from the 141st meridian west in a southeastward direction, following the Saint Elias Mountains . South of the 60th parallel north , the border continues into British Columbia. British Columbia has two international borders with

5400-418: The U.S. west of the Rockies to be 54°40′N related to the southern boundary of Russia's Alaska Territory . However, Great Britain wanted a border that followed the Columbia River to the Pacific Ocean. The dispute was resolved in the Oregon Treaty of 1846, which established the 49th parallel as the boundary through the Rockies. The Northwest Boundary Survey (1857–1861) laid out the land boundary. However,

5500-402: The United States and what is now Ontario . Northwest of Lake Superior , the boundary followed rivers to the Lake of the Woods . From the northwesternmost point of the Lake of the Woods , the boundary was agreed to go straight west until it met the Mississippi River . That line never meets the river since the river's source is farther south. The Jay Treaty of 1794 (effective 1796) created

5600-449: The United States. The neighboring Mohawk territory of Akwesasne straddles the Ontario–Quebec–New York borders, where its First Nations sovereignty prevents Ontario Provincial Police , Sûreté du Québec , Royal Canadian Mounted Police , Canada Border Services Agency, Canadian Coast Guard , United States Border Patrol , United States Coast Guard , and New York State Police from exercising jurisdiction over exchanges taking place within

5700-448: The United States: with the state of Alaska along BC's northwest, and with the contiguous United States along the southern edge of the province, including (west to east) Washington , Idaho , and Montana . BC's Alaskan border, continuing from Yukon's, proceeds through the Saint Elias Mountains , followed by Mount Fairweather at 58°54′N 137°31′W  /  58.900°N 137.517°W  / 58.900; -137.517 (near

5800-428: The War of 1812 and also laid out preliminary principles for drawing a border between British North America and the United States. The Treaty of 1818 saw the expansion of both British North America and the United States, with their boundary extending westward along the 49th parallel , from the Northwest Angle at Lake of the Woods to the Rocky Mountains . While the Laurentian Divide had previously been agreed to as

5900-416: The War of 1812, returning the boundaries of British North America and the United States to the state they were before the war. In the following decades, the United States and the United Kingdom concluded several treaties that settled the major boundary disputes between the two, enabling the border to be demilitarized . The Rush–Bagot Treaty of 1817 provided a plan for demilitarizing the two combatant sides in

6000-470: The border between New Hampshire , Vermont, and New York on the one hand, and the Province of Canada on the other, resolving the Indian Stream dispute and the Fort Blunder dilemma at the outlet to Lake Champlain . The part of the 45th parallel that separates Quebec from the U.S. states of Vermont and New York had first been surveyed from 1771 to 1773 after it had been declared the boundary between New York (including what later became Vermont) and Quebec. It

6100-462: The border down and out into the Pacific Ocean, terminating it upon reaching international waters . BC's border along the contiguous U.S. begins southwest of Vancouver Island and northwest of the Olympic Peninsula , at the terminus of international waters in the Pacific Ocean and the northwest corner of the American state of Washington . It follows the Strait of Juan de Fuca eastward, turning northeastward to enter Haro Strait . The border follows

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6200-416: The border heads toward Beau Lake , going through it and continuing into New Brunswick. The entire border of New Brunswick is shared with the U.S. state of Maine, beginning at the southern tip of Beau Lake at 47°18′N 69°03′W  /  47.300°N 69.050°W  / 47.300; -69.050 (between Rivière-Bleue , Quebec and Saint-François Parish, New Brunswick ), subsequently proceeding to

6300-538: The border with Canada in connection with the pandemic. He later abandoned the idea following vocal opposition from Canadian officials. The International Boundary is commonly said to be the world's "longest undefended border", though this is true only in the military sense, as civilian law enforcement is present. It is illegal to cross the border outside border controls, as anyone crossing the border must be checked per immigration and customs laws. The relatively low level of security measures stands in contrast to that of

6400-410: The boundary between the United States and the Dominion of Canada from the Atlantic Ocean to the Pacific Ocean", to survey and delimit the boundary between Canada and the U.S. through the St. Lawrence River and Great Lakes, by modern surveying techniques, and thus accomplished several changes to the border. In 1925, the International Boundary Commission's temporary mission became permanent for maintaining

6500-439: The closure on both sides of the border, called for more nuanced restrictions in place of the blanket ban on non-essential travel. The Northern Border Caucus, a group in the U.S. Congress composed of members from border communities, made similar suggestions to the governments of both countries. Beyond the closure itself, US President Donald Trump also initially suggested the idea of deploying United States military personnel near

6600-410: The confluence of the Nicola and Thompson rivers in British Columbia . The Fraser River separates the Cascades from the Coast Mountains in Canada, as does the Willamette Valley from the upper portion of the Oregon Coast Range . The highest volcanoes of the Cascades, known as the High Cascades, dominate their surroundings, often standing twice the height of the nearby mountains. They often have

6700-439: The early 1840s, at first only marginally. Following the Oregon Treaty the inward flux of migration from the Oregon Trail intensified and the passes and back-valleys of what is now the state of Washington were explored and populated, and it was not long after that railways followed. Despite its being traversed by several major freeways and rail lines, and its lower flanks subjected to major logging in recent decades, large parts of

6800-662: The end of March 2018, the RCMP intercepted 25,645 people crossing the border into Canada from an unauthorized point of entry. Public Safety Canada estimates another 2,500 came across in April 2018 for a total of just over 28,000. The length of the terrestrial boundary is 8,891 km (5,525 mi), of which 6,416 km (3,987 mi) is against the contiguous 48 states , and 2,475 km (1,538 mi) against Alaska . Eight out of thirteen provinces and territories of Canada and thirteen out of fifty U.S. states are located along this international boundary. The Canadian territory of Yukon shares its entire western border with

6900-418: The entire Canada–U.S. border in Manitoba lies along the 49th parallel north. At the province's eastern end, however, the border briefly enters the Lake of the Woods, turning north at 48°59′N 95°09′W  /  48.983°N 95.150°W  / 48.983; -95.150 where it continues into the land along the western end of Minnesota's Northwest Angle , the only part of the United States besides

7000-477: The established Siskiyou Trail into the Willamette Valley . With the exception of the 1915 eruption of remote Lassen Peak in Northern California, the range was quiet for more than a century. Then, on May 18, 1980, the dramatic eruption of Mount St. Helens shattered the quiet and brought the world's attention to the range. Geologists were also concerned that the St. Helens eruption was a sign that long-dormant Cascade volcanoes might become active once more, as in

7100-403: The first to explore the Stehekin River and Bridge Creek region. Due to the difficulty of crossing the northern Cascades and the paucity of beaver, fur-trading companies made only a few explorations into the mountains north of the Columbia River after Ross. Exploration and settlement of the Cascades region by Europeans and Americans was accelerated by the establishment of a major trading post of

7200-650: The flag of the Mohawk people. Although U.S. Customs remained open to southbound traffic, northbound traffic was blocked on the U.S. side by both American and Canadian officials. The Canadian border at this crossing remained closed for six weeks. On July 13, 2009, the CBSA opened a temporary inspection station at the north end of the north span of the bridge in the city of Cornwall, allowing traffic to once again flow in both directions. The Mohawk people of Akwesasne have staged ongoing protests at this border. In 2014, they objected to

7300-421: The form of snow and ice is also important for agriculture. The snow-capped mountains, such as Mt. Hood and Mt. Bachelor , are used as ski resorts in the late winter, while in the summer they become popular hiking and mountaineering locations. Much of their meltwater eventually flows into reservoirs, where it is used for recreation, while its potential energy is captured to generate hydroelectric power before

7400-616: The initiative, was implemented on January 23, 2007, specifying six forms of identification acceptable for crossing the U.S. border (depending on mode): The requirement of a passport or an enhanced form of identification to enter the United States by air went into effect in January 2007; and went into effect for those entering the U.S. by land and sea in January 2008. Although the new requirements for land and sea entry went into legal effect in January 2008, its enforcement did not begin until June 2009. Since June 2009, every traveler arriving via

7500-424: The international boundary by land or sea, or when arriving by air from only Canada or the United States. Although permanent residents of Canada and the United States are eligible for FAST or NEXUS, they are required to travel with a passport and proof of permanent residency upon arrival at the Canadian border. American permanent residents who are NEXUS members also require Electronic Travel Authorization when crossing

7600-783: The maritime components of the boundary at the Atlantic , Pacific , and Arctic oceans. The border also runs through the middle of the Mohawk Nation at Akwesasne and even divides some buildings found in communities in New England and Quebec. The US Customs and Border Protection identifies the chief issues along the border as domestic and international terrorism; drug smuggling and smuggling of products (such as tobacco ) to evade customs duties; and illegal immigration. A June 2019 U.S. Government Accountability Office report identified specific staffing and resource shortfalls faced by

7700-465: The middle of the river to the 45th parallel of north latitude . The parallel had been established in the 1760s as the boundary between the provinces of Quebec and New York (including what would later become the State of Vermont ). It was surveyed and marked by John Collins and Thomas Valentine from 1771 to 1773. The St. Lawrence River and the Great Lakes became the boundary further west, between

7800-493: The mountain range which contained these peaks. He referred to it simply as the "eastern snowy range". Earlier Spanish explorers called it Sierra Nevada , meaning "snowy mountains". In 1805, the Lewis and Clark Expedition passed through the Cascades on the Columbia River, which for many years was the only practical way to pass that part of the range. They were the first non-indigenous people to see Mount Adams , but they thought it

7900-532: The northern and northeastern parts are less glaciated and more plateau-like, resembling nearby areas of the Thompson Plateau . The range is near the Pacific Ocean and in the region's prevailing westerly winds , so it receives significant rain and snowfall, especially on the western slopes due to orographic lift , with annual snow accumulations of up to 1,000 inches (2,500 cm) (= 83 feet (25 m)) in some areas. Mount Baker in Washington recorded

8000-613: The northern extremity of the Cascades at Lytton Mountain . Overall, the North Cascades and Canadian Cascades are extremely rugged; even the lesser peaks are steep and glaciated, and valleys are quite low relative to peaks and ridges, so there is great local relief . The southern part of the Canadian Cascades, particularly the Skagit Range , is geologically and topographically similar to the North Cascades, while

8100-774: The older Hudson's Bay Company Brigade Trail from the Canyon to the Interior, the Dewdney Trail, and older routes which connected east to the Similkameen and Okanagan valleys. The southern mainline of the Canadian Pacific Railway penetrated the range via the passes of the Coquihalla River , along one of the steepest and snowiest routes in the entire Pacific Cordillera . Near Hope, B.C. ,

8200-597: The period from 1800 to 1857 when a total of eight erupted. None have erupted since St. Helens, but precautions are being taken nevertheless, such as the Cascades Volcano Observatory and Mount Rainier Volcano Lahar Warning System in Pierce County, Washington . The Cascade Range is made up of a band of thousands of very small, short-lived volcanoes that have built a platform of lava and volcanic debris. Rising above this volcanic platform are

8300-422: The provinces of both Alberta and Saskatchewan lies along the 49th parallel north. Both provinces share borders with the state of Montana , while, farther east, Saskatchewan also shares a border with North Dakota . On the American side, the states of Montana, North Dakota , and Minnesota all lie on the straight part of the border. Along with the U.S. states of North Dakota and Minnesota (west to east), nearly

8400-466: The range is 510 °F (266 °C) at 3,075 feet (937 m) below Newberry Volcano 's caldera floor. Forests of large, coniferous trees ( western red cedars , Douglas-firs, western hemlocks, firs , pines , spruces , and others) dominate most of the Cascade Range. Cool, wet winters and warm, dry summers (largely a result of oceanic influence) favor evergreen species, whereas mild temperatures and rich soils promote fast and prolonged growth. As

8500-495: The range remain intense and forbidding alpine wilderness. Much of the northern half of the Cascades, from Rainier north, have been preserved by U.S. national or British Columbia provincial parks (such as E.C. Manning Provincial Park ), or other forms of protected area. The Canadian side of the range has a history that includes the Fraser Canyon Gold Rush of 1858–60 and its famous Cariboo Road , as well as

8600-524: The route of fur brigades, followed the Okanogan River along the east edge of the Cascades and the Columbia River through the range. Passes across the range were not well known and little used. Naches Pass was used for driving cattle and horses to Fort Nisqually . Yakima Pass was also used by the Hudson's Bay Company. American settlement of the flanks of the Coast Range did not occur until

8700-691: The south, near the border. The Barlow Road was the first established land path for U.S. settlers through the Cascade Range in 1845, and formed the final overland link for the Oregon Trail (previously, settlers had to raft down the treacherous rapids of the Columbia River). The Road left the Columbia at what is now Hood River and passed along the south side of Mount Hood at what is now Government Camp , terminating in Oregon City. There

8800-401: The state of Alaska that is north of the 49th parallel. The border reaches Ontario at 49°23′N 95°09′W  /  49.383°N 95.150°W  / 49.383; -95.150 . The province of Ontario shares its border (west to east) with the U.S. states of Minnesota, Michigan , Ohio , Pennsylvania , and New York . The largest provincial international border, most of the border is

8900-830: The strait in a northward direction, but turns sharply eastward through Boundary Pass , separating the Canadian Gulf Islands from the American San Juan Islands . Upon reaching the Strait of Georgia , the border turns due north and then towards the northwest, bisecting the strait until the 49th parallel north. After making a sharp turn eastbound, the border follows this parallel across the Tsawwassen Peninsula , separating Point Roberts, Washington , from Delta, British Columbia , and continues into Alberta. The entire Canada–U.S. border in

9000-489: The survey and mapping of the border; maintaining boundary monuments and buoys; and keeping the border clear of brush and vegetation for 6 m (20 ft). This " border vista " extends for 3 m (9.8 ft) on each side of the line. In 1909, under the Boundary Waters Treaty , the International Joint Commission was established for Canada and the U.S. to investigate and approve projects that affect

9100-494: The territory. In May 2009, the Mohawk people of Akwesasne occupied the area around the Canada Border Services Agency port of entry building to protest the Canadian government's decision to arm its border agents while operating on Mohawk territory. The north span of the Seaway International Bridge and the CBSA inspection facilities were closed. During this occupation, the Canadian flag was replaced with

9200-531: The two countries in both populated and rural areas. Both nations are also actively involved in detailed and extensive tactical and strategic intelligence sharing. In December 2010, Canada and the United States were negotiating an agreement titled "Beyond the Border: A Shared Vision for Perimeter Security and Competitiveness" which would give the U.S. more influence over Canada's border security and immigration controls, and more information would be shared by Canada with

9300-667: The water boundary was not settled for some time. After the Pig War in 1859, arbitration in 1872 established the border between the Gulf Islands and the San Juan Islands . The International Boundary Survey (or, the "Northern Boundary Survey" in the U.S.) began in 1872. Its mandate was to establish the border as agreed to in the Treaty of 1818. Archibald Campbell led the way for the United States, while Donald Cameron, supported by chief astronomer Samuel Anderson , headed

9400-450: The water is used to irrigate crops. Because of the abundance of powerful streams, many of the major westward-draining rivers of the Cascades have been dammed to provide hydroelectric power . One of these, Ross Dam on the Skagit River , retains a reservoir which spans the border southeast of Hope, British Columbia , extending 2 miles (3.2 km) into Canada. At the foot of the southeast flank of Mount Baker, at Concrete, Washington ,

9500-410: The waters and waterways along the border. As a result of the 2001 September 11 attacks , the Canada–U.S. border was shut without any warning, and no goods or people were allowed to cross. In the wake of the impromptu border closure, procedures were jointly developed to ensure that commercial traffic could cross the border even if people were restricted from crossing. These procedures were later used for

9600-471: The west side. The treeline is at ~6000 feet. On the east side, subalpine forests of larch trees grade to pine and interior fir forests below 4200 ft, which grade to ponderosa below 2500 ft, which in turn grades to semidesert scrub near sea level. Above 7500 ft, the landscape is barren with either no plants or only moss and lichen . Black bears , coyotes , bobcats , cougars , beavers , deer , elk , moose , mountain goats and

9700-457: Was Mount St. Helens. When they later saw Mount St. Helens they thought it was Mount Rainier. On their return trip, Lewis and Clark spotted a high but distant snowy pinnacle that they named for the sponsor of the expedition, U.S. President Thomas Jefferson . Lewis and Clark called the Cascade Range the "Western Mountains". The Lewis and Clark expedition, and the many settlers and traders that followed, met their last obstacle to their journey at

9800-603: Was in Canada, which created a dilemma for the U.S. that was not resolved until a provision of the treaty left the border on the meandering line as surveyed. The border along the Boundary Waters in present-day Ontario and Minnesota between Lake Superior and the Northwest Angle was also redefined. An 1844 boundary dispute during the Presidency of James K. Polk led to a call for the northern boundary of

9900-564: Was named after Admiral Peter Rainier . Later in 1792, Vancouver had his lieutenant William Robert Broughton explore the lower Columbia River . He named Mount Hood after Lord Samuel Hood , an admiral of the Royal Navy . Mount St. Helens was sighted by Vancouver in May 1792, from near the mouth of the Columbia River. It was named for Alleyne FitzHerbert, 1st Baron St Helens , a British diplomat. Vancouver's expedition did not, however, name

10000-471: Was surveyed again after the War of 1812. The U.S. federal government began to construct fortifications just south of the border at Rouses Point, New York , on Lake Champlain. After a significant portion of the construction was completed, measurements revealed that at that point, the actual 45th parallel was three-quarters of a mile (1.2 km) south of the surveyed line. The fort, which became known as " Fort Blunder ",

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