| 释义 |
- Other notable boundary points
- Elevation
- See also
- References
The extreme points of British Columbia are four in number: - Mount Jetté, also legally described as Boundary Peak 177, which lies just inside the apex of the joint boundaries of British Columbia, Yukon and the US state of Alaska, at {{coord|59|59|41|N|139|03|10|W|display=inline|name=Mount Jetté}}. US coordinates for the same summit are {{coord|59|59|39.3|N|139|03|12.6|W|display=inline|name=Mount Jetté (US)}}.[1] The International Boundary Commission (IBC) defines "boundary point 177" as {{coord|59|59|41.3|N|139|3|13.8|W|display=inline|name=Boundary Point 177}}.[2] The actual extreme point is where a line extending northwest from that summit reaches the 60th Parallel north, which is the limit of British Columbia, en route to the 141st line of longitude, which is the boundary between Yukon and Alaska.
- at the intersection of the 60th Parallel N and the 120th Meridian West, which is the intersection of the boundaries of the Northwest Territories, British Columbia, and Alberta, north of the headwater area of the Petitot River, a tributary of the Liard ({{coord|60|00|00|N|120|00|00|W|display=inline|name=NWT/BC/AB boundary intersection}}).
- Forum Peak, which lies just north of the apex of the joint boundaries of British Columbia, Alberta, and the US state of Montana, and at the southwest corner of Waterton Lakes National Park, at {{coord|49|00|14|N|114|04|17|W|display=inline|name=Forum Peak}}. The actual extreme point lies just southeast of that summit, where the Continental Divide crosses the Canada–US border. That point is marked by boundary monument 272, at {{coord|48|59|55.89|N|114|4|5.45|W|display=inline|name=Boundary monument 272}}.[3]
- the southernmost extremity is a point in the Strait of Juan de Fuca at {{coord|48|13|28.4|N|123|32|28.4|W|display=inline|name=Turning Point 9}},[4] due south of Christopher Point which is the southernmost tip of Vancouver Island, at {{coord|48|19|00|N|123|35|00|W|display=inline|name=Christopher Point}}.[5] The southernmost land extremity is the southernmost point of land in the Race Rocks, which comprise an offshore ecological reserve, at {{coord|48|18|00|N|123|32|00|W|display=inline|name=Race Rocks}}.[6]
Other notable boundary points- The 49th Parallel boundary dividing the Mainland from the United States terminates in the middle of the Strait of Georgia southwest of the Tsawwassen Ferry Terminal, at {{coord|49|0|7.5|N|123|19|20.1|W|display=inline|name=Turning Point 1}}.[4]
- The northern marine boundary of British Columbia is the A-B Line, established by the Alaska Boundary Settlement of 1903, drawn from Point A to Point B. Point A is near Cape Muzon, the southern tip of Dall Island, Alaska, at {{coord|54|39|44.0|N|132|41|3.1|W|display=inline|name=Point A}}.[7] Point B is a point in the waters of Chatham Sound, on roughly the same line of latitude, at the south end of Tongass Passage, which separates Tongass Island, Alaska, from Wales Island, at {{coord|54|42|26.9|N|130|36|56.3|W|display=inline|name=Point B}}.[7]
- The southernmost point of the land border between Alaska and British Columbia is on the shoreline between Stewart, British Columbia and Hyder, Alaska at Eagle Point, which is the western tip of the estuary of the Salmon River as it enters the head of the Portland Canal, at {{coord|55|54|16|N|130|00|59|W|display=inline|name=Eagle Point (Boundary Monument 1)}}. Eagle Point is the location of Boundary Monument 1, as ordered by the Alaska Boundary Tribunal.[8][9]
- The British Columbia-Alberta border diverges from the 120th Meridian at Intersection Mountain, {{coord|53|47|56|N|120|00|00|W|display=inline|name=Intersection Mountain boundary point}} (the actual summit of Intersection Mountain is at {{coord|53|47|56|N|120|00|05|W|display=inline|name=Intersection Mountain (summit)}}).
Elevation- Fairweather Mountain, known in the United States as Mount Fairweather, at {{coord|58|54|23|N|137|31|36|W|display=inline|name=Mount Fairweather (Fairweather Mountain)}}, is the highest point of land in British Columbia, at 4671 m (15,325 ft), and is at the southern apex of the "British Columbia Panhandle" which lies west of the passes connecting Skagway, Dyea and Haines, Alaska to the Yukon. The southern slope of the mountain is in Alaska, while about a third of the mountain is in British Columbia, with the summit wholly within British Columbia
- The highest mountain fully within British Columbia is Mount Waddington, 4019 m (13,186 ft) at {{coord|51|22|20|N|125|15|44|W|display=inline|name=Mount Waddington}}.
- The lowest points in British Columbia are in the City of Richmond, and are c.6 ft below sea level, due to dyking and drainage systems. There are no natural formations in British Columbia below sea level.
See also- List of Boundary Peaks of the Alaska – British Columbia/Yukon border
- List of peaks on the British Columbia-Alberta border
References1. ^{{cite ngs|id=TY7934|designation=BOUNDARY PT 177 MT JETTE|accessdate=13 September 2010}}
2. ^{{cite web |title= Coordinates along the International Boundary (NAD 83), Southeast Alaska |publisher= International Boundary Commission |url= http://www.internationalboundarycommission.org/coordinates/SECT-O-83.txt |accessdate= 13 September 2010}}
3. ^{{cite ngs|id=TN1026|designation=BOUNDARY MON 272 CD US|accessdate=13 September 2010}}
4. ^1 {{cite web |title= Coordinates along the International Boundary (NAD 83), Straits of Georgia |publisher= International Boundary Commission |url= http://www.internationalboundarycommission.org/coordinates/SECT-N-83.txt |accessdate= 13 September 2010}}
5. ^"Christopher Point" in BCGNIS {{webarchive|url=https://web.archive.org/web/20110716152354/http://archive.ilmb.gov.bc.ca/bcgn-bin/bcg10?name=5952 |date=2011-07-16 }}
6. ^"Race Rocks" in BCGNIS {{webarchive|url=https://web.archive.org/web/20110716152401/http://archive.ilmb.gov.bc.ca/bcgn-bin/bcg10?name=22343 |date=2011-07-16 }}
7. ^1 {{cite web |title= Coordinates along the International Boundary (NAD 83), Portland Canal |publisher= International Boundary Commission |url= http://www.internationalboundarycommission.org/coordinates/SECT-O-83.txt |accessdate= 13 September 2010}}
8. ^"Eagle Point" in BCGNIS {{webarchive|url=https://web.archive.org/web/20110716152414/http://archive.ilmb.gov.bc.ca/bcgn-bin/bcg10?name=36559 |date=2011-07-16 }}
9. ^BC Basemap Online
- British Columbia Geographical Names Information System online search
- Geographical Names Information System online search
{{GeoGroupTemplate}} 1 : Geography of British Columbia |