Lake Timiskaming or Lake Temiskaming (, ) is a large freshwater lake on the provincial boundary between Ontario and Quebec, Canada. The lake, which forms part of the Ottawa River, is in length and covers an area of . Its water level ranges between and above sea-level, with a mean annual average of .

Timiskaming Graben

Lake Timiskaming is located within the ancient major rift valley Timiskaming Graben. It is the northern extension of the Ottawa-Bonnechere Graben, which is part of the Saint Lawrence rift system.

There have been recent earthquakes along the rift valley, the most recent being in 2000. There are numerous faults in the area and has produced cliffs such as Devil's Rock, just south of Haileybury and is dated to be 2.2 billion years old. There are known kimberlite pipes within the rift valley that are considered to be diamondiferous.

See also

  • Mugwump (folklore)
  • 1935 Timiskaming earthquake
  • 2000 Kipawa earthquake

References

  • Description on Notre-Dame-du-Nord municipal website
  • Timiskaming – Ontario Highway 11 Homepage