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Table 2.1
Water resource characteristics, by drainage region

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Water resource characteristics, by drainage region
  Code Land and water area 1 Water area 2 Precipitation 3
Total As a portion of total area Share of national water area Amount Volume
    km 2 percent mm per year km 3 per year
Canada   9,978,923 1,169,561 11.7 100 545 5,451
Pacific Coastal 1 334,455 14,219 4.3 1.2 1,354 451
Fraser–Lower Mainland 2 233,104 8,937 3.8 0.8 670 156
Okanagan–Similkameen 3 15,603 585 3.7 0.1 466 7
Columbia 4 87,323 2,348 2.7 0.2 776 68
Yukon 5 332,906 9,540 2.9 0.8 346 115
Peace–Athabasca 6 485,145 16,725 3.4 1.4 497 241
Lower Mackenzie 7 1,330,490 177,000 13.3 15.1 365 486
Arctic Coast–Islands 8 1,764,280 175,804 10.0 15.0 189 333
Missouri 9 27,096 915 3.4 0.1 390 11
North Saskatchewan 10 150,151 7,242 4.8 0.6 443 67
South Saskatchewan 11 177,623 6,219 3.5 0.5 419 74
Assiniboine–Red 12 190,704 8,846 4.6 0.8 450 86
Winnipeg 13 107,655 20,525 19.1 1.8 683 74
Lower Saskatchewan–Nelson 14 360,887 67,617 18.7 5.8 508 183
Churchill 15 313,568 51,918 16.6 4.4 480 151
Keewatin–Southern Baffin Island 16 939,569 161,011 17.1 13.8 330 310
Northern Ontario 17 691,809 56,064 8.1 4.8 674 466
Northern Quebec 18 940,193 149,081 15.9 12.7 698 656
Great Lakes 19 317,860 111,577 35.1 9.5 925 292
Ottawa 20 146,353 14,550 9.9 1.2 947 139
St. Lawrence 21 118,733 8,801 7.4 0.8 1,057 125
North Shore–Gaspé 22 369,095 36,933 10.0 3.2 994 367
Saint John–St. Croix 23 41,903 1,716 4.1 0.1 1,147 48
Maritime Coastal 24 122,057 6,495 5.3 0.6 1,251 153
Newfoundland–Labrador 25 380,361 54,893 14.4 4.7 1,030 392
Area includes the Canadian portion of the Great Lakes.
Water area figures are calculated from the Canada-wide 1-km Water Fraction derived from National Topographic Data Base maps.
Precipitation values have been estimated from an Inverse Distance Weighted interpolation of the 1971 to 2000 normals.
Source(s):
Environment Canada, Meteorological Service of Canada, 2008, Canadian Climate Normals and Averages 1971-2000, http://climate.weatheroffice.gc.ca/climate_normals/index_e.html (accessed April 27, 2010). Fernandes, R., G. Pavlic, W. Chen, and R. Fraser, 2001, 1-km Water Fraction From National Topographic Data Base Maps, Canada, Natural Resources Canada, Earth Science Sector, www.geogratis.ca/geogratis/en/option/select.do?id=8C3D34AE-5BD5-A83C-DB8C-895FB4AD86C6 (accessed April 28, 2010).