3,300 cu km (1985)
Freshwater withdrawal (domestic/industrial/agricultural):
total: 44.72 cu km/yr (20%/69%/12%)
per capita: 1,386 cu m/yr (1996)
Natural hazards:
continuous permafrost in north is a serious obstacle to development; cyclonic storms form east of the Rocky Mountains, a result of the mixing of air masses from the Arctic, Pacific, and North American interior, and produce most of the country's rain and snow east of the mountains
volcanism: the vast majority of volcanoes in Western Canada's Coast Mountains remain dormant
Environment - current issues:
air pollution and resulting acid rain severely affecting lakes and damaging forests; metal smelting, coal-burning utilities, and vehicle emissions impacting on agricultural and forest productivity; ocean waters becoming contaminated due to agricultural, industrial, mining, and forestry activities
Environment - international agreements: