Table 3.1
Total water storage change and water yield, by ecoprovince


Table 3.1
Total water storage change and water yield, by ecoprovince
Table summary
This table displays the results of Total water storage change and water yield. The information is grouped by Ecoprovince (appearing as row headers), Code, Cumulative total water storage change, 2002 to 2016, Annual total water storage change, 2002 to 2016, Average annual water yield, 1971 to 2014, Average annual water yield per area, 1971 to 2014 and Water yield variability, calculated using km, mm/yr, mm and CV units of measure (appearing as column headers).
Ecoprovince Code Cumulative total water storage change, 2002 to 2016 Annual total water storage change, 2002 to 2016 Average annual water yield, 1971 to 2014 Average annual water yield per area, 1971 to 2014 Water yield variability
km3 mm/yr km3 mm CV
Canada Note ...: not applicable Note ..: not available for a specific reference period Note ..: not available for a specific reference period 3,514 350 Note .: not available for any reference period
Northern Arctic Cordillera 1.1 -170Note * -105Note * Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Southern Arctic Cordillera 1.2 -171Note * -103Note * Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Sverdrup Islands 2.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Ellesmere Basin 2.2 -165Note * -96Note * Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Victoria Lowlands 2.3 33Note ** 6Note ** Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Parry Channel Plateau 2.4 -66Note * -41Note * Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Boothia–Foxe Shield 2.5 -62Note * -9Note * Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Baffin Uplands 2.6 -91Note * -50Note * Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Foxe–Boothia Lowlands 2.7 Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period Note ..: not available for a specific reference period
Amundsen Lowlands 3.1 8Note E: Use with caution 2Note E: Use with caution 36 117 1.78
Keewatin Lowlands 3.2 0Note E: Use with caution 0Note E: Use with caution 66 171 1.79
Ungava–Belcher 3.3 -31Note * -15Note * 66 417 1.71
Mackenzie Foothills 4.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 16 184 1.76
Great Bear Lowlands 4.2 -20Note * -5Note * 41 120 1.76
Hay–Slave Lowlands 4.3 -17Note * -5Note * 26 111 1.80
Western Taiga Shield 5.1 -36Note ** -4Note ** 91 143 1.70
Eastern Taiga 5.2 23Note ** 4Note ** 231 585 1.67
Labrador Uplands 5.3 6Note E: Use with caution 2Note E: Use with caution 189 754 1.69
Whale River Lowland 5.4 -1Note E: Use with caution -1Note E: Use with caution 66 580 1.71
Western Boreal Shield 6.1 -2Note E: Use with caution 0Note E: Use with caution 103 196 1.65
Mid-Boreal Shield 6.2 19Note E: Use with caution 3Note E: Use with caution 197 393 1.66
Eastern Boreal Shield 6.3 35Note * 7Note * 281 793 1.67
Newfoundland 6.4 11Note * 7Note * 128 1,147 1.62
Lake of the Woods 6.5 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 13 188 1.73
Southern Boreal Shield 6.6 27Note E: Use with caution 6Note E: Use with caution 165 517 1.65
Appalachian–Acadian Highlands 7.1 19Note * 15Note * 66 698 1.68
Northumberland Lowlands 7.2 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 26 735 1.66
Fundy Uplands 7.3 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 70 986 1.63
Great Lakes–St. Lawrence Lowlands 8.1 7Note * 6Note * 63 713 1.68
Huron–Erie Plains 8.2 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 15 595 1.74
Boreal Foothills 9.1 3Note E: Use with caution 2Note E: Use with caution 17 137 1.76
Central Boreal Plains 9.2 3Note E: Use with caution 0Note E: Use with caution 40 83 1.78
Eastern Boreal Plains 9.3 29Note * 19Note * 17 127 1.81
Eastern Prairies 10.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 2 68 2.29
Parkland Prairies 10.2 27Note * 11Note * 7 42 2.45
Central Grassland 10.3 45Note * 12Note * 5 20 2.35
Northern Yukon Mountains 11.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 4 153 1.78
Old Crow–Eagle Plains 11.2 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 3 165 1.79
Ogilvie Mountains 11.3 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 12 200 1.75
Mackenzie–Selwyn Mountains 11.4 21Note * 10Note * 42 266 1.78
Wrangel Mountains 12.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 10 412 1.70
Northern Boreal Cordillera 12.2 -89Note * -27Note * 69 289 1.69
Southern Boreal Cordillera 12.3 -97Note * -41Note * 97 580 1.70
Western Boreal Cordillera 12.4 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 9 244 1.70
Georgia Depression 13.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 33 1,696 1.67
Southern Coastal Mountains 13.2 -43Note E: Use with caution -22Note E: Use with caution 366 2,308 1.61
Northern Coastal Mountains 13.3 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 53 1,652 1.67
Northern Montane Cordillera 14.1 -37Note * -19Note * 83 590 1.70
Central Montane Cordillera 14.2 -38Note ** -25Note ** 29 274 1.70
Southern Montane Cordillera 14.3 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 20 342 1.74
Columbia Montane Cordillera 14.4 -13Note * -5Note * 136 757 1.69
Hudson Bay Coastal Plains 15.1 Note ..: not available for a specific reference period Note ..: not available for a specific reference period 17 272 1.69
Hudson–James Lowlands 15.2 26Note ** 6Note ** 105 337 1.68
. not available for any reference period
.. not available for a specific reference period
... not applicable
E use with caution
Note *

significantly different from reference category (p < 0.05)

Return to note * referrer

Note **

significantly different from reference category (p < 0.10)

Return to note ** referrer

Notes: Total water storage change is an estimate of the change in water stored in the environment as groundwater, soil moisture, surface water, snow and ice. Caution must be used in interpreting total water storage change results because of the level of uncertainty in the models, the short length of the time series, and the coarse resolution of the data. Data were suppressed for smaller ecoprovinces using a threshold of approximately 90,000 km2. Statistically significant linear trends are presented at the 90% confidence interval or above. Water yield is an estimate of freshwater runoff. Water yield data was suppressed at the ecoprovince level for the North, but these areas are included in the Canada estimate. Water yield variability is measured by using a coefficient of variation (CV) that allows the comparison of all months in all years of the 43-year time period. The CV of the data is a measure of the dispersion or variation in the monthly values over the period 1971 to 2014. It is defined as the ratio of the standard deviation of the monthly values to the mean. A higher CV indicates that the monthly data are more variable.
Sources: Statistics Canada, Environment and Energy Statistics Division, 2021, special tabulation based on Wang, S., et al., 2014, “Assessment of water budget for sixteen large drainage basins in Canada,” Journal of Hydrology, Vol. 512, pp. 1-15, https://doi.org/10.1016/j.jhydrol.2014.02.058 (accessed December 11, 2020); Wang, S. and J. Li, 2016, “Terrestrial water storage climatology for Canada from GRACE satellite observations in 2002-2014,” Canadian Journal of Remote Sensing, Vol. 42, no. 3, pp. 190-202, https://doi.org/10.1080/07038992.2016.1171132 (accessed December 17, 2020); Li, J., S. Wang and F. Zhou, 2016, “Time series analysis of long-term terrestrial water storage over Canada from GRACE satellites using principal component analysis,” Canadian Journal of Remote Sensing, Vol. 42, no. 3, pp. 161-170, https://doi.org/10.1080/07038992.2016.1166042 (accessed March 23, 2021); Statistics Canada, Table 38-10-0091-01, https://www150.statcan.gc.ca/t1/tbl1/en/tv.action?pid=3810009101 (accessed December 17, 2020); Spence, C. and A. Burke, 2008, “Estimates of Canadian Arctic Archipelago runoff from observed hydrometric data,” Journal of Hydrology, Vol. 362, pp. 247-259.
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