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Table 2.2
Average annual water yield by drainage region, 1971 to 2004
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| Drainage region code | Water yield | ||
|---|---|---|---|
| Volume 1 | Volume per unit area | ||
| number | km 3 | m 3 per m 2 | |
| Canada | 3,472.3 | 0.348 | |
| Pacific Coastal | 1 | 513.7 | 1.536 |
| Fraser–Lower Mainland | 2 | 128.6 | 0.552 |
| Okanagan–Similkameen | 3 | 4.2 | 0.270 |
| Columbia | 4 | 67.7 | 0.776 |
| Yukon | 5 | 106.0 | 0.318 |
| Peace–Athabasca | 6 | 99.9 | 0.206 |
| Lower Mackenzie | 7 | 246.3 | 0.185 |
| Arctic Coast–Islands | 8 | 231.3 | 0.131 |
| Missouri | 9 | 0.5 | 0.019 |
| North Saskatchewan | 10 | 10.2 | 0.068 |
| South Saskatchewan | 11 | 9.6 | 0.054 |
| Assiniboine–Red | 12 | 6.9 | 0.036 |
| Winnipeg | 13 | 25.4 | 0.236 |
| Lower Saskatchewan–Nelson | 14 | 47.6 | 0.132 |
| Churchill | 15 | 49.4 | 0.158 |
| Keewatin–Southern Baffin Island | 16 | 192.0 | 0.204 |
| Northern Ontario | 17 | 199.2 | 0.288 |
| Northern Quebec | 18 | 516.3 | 0.549 |
| Great Lakes | 19 | 133.1 | 0.419 |
| Ottawa | 20 | 62.6 | 0.428 |
| St. Lawrence | 21 | 71.3 | 0.600 |
| North Shore–Gaspé | 22 | 292.2 | 0.792 |
| Saint John–St. Croix | 23 | 29.2 | 0.697 |
| Maritime Coastal | 24 | 103.6 | 0.849 |
| Newfoundland–Labrador | 25 | 325.4 | 0.856 |
The water yield estimates are 34-year
annual averages (1971 to 2004), with the exception of those estimates
for drainage regions 5, 7, 16, 17, 18 and the
Labrador portion of 25 which are based on 20 years of
data (1975 to 1996); and drainage region 8 which is based
on a 23-year annual average (1972-1994) for the Arctic Archipelago (Spence
and Buke 2008), and on a 20-year annual average (1975 to 1996)
for the remaining area.
Note(s):
Data were derived from discharge values contained in Environment Canada, 2010,
Water Survey of Canada, Archived Hydrometric Data (HYDAT) (www.wsc.ec.gc.ca/hydat/H2O/index_e.cfm?cname=main_e.cfm).
Source(s):
Spence C., and A. Burke, 2008, "Estimates of Canadian Arctic
Archipelago Runoff from Observed Hydrometric Data," Journal of Hydrology
, Vol. 362, pages 247 to 259. Statistics Canada, Environment
Accounts and Statistics Division, 2010, special tabulation.
