Water Supply Outlook for Alberta

July 2006

Table 7a - Water Supply Forecast as of July 1, 2006 - North Saskatchewan River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2006
Locations Volume in dam3 Volume as a % of Average Probable Range as a % of Average Reasonable Minimum
as % of
Average 		Forecast Ranking (lowest to highest) Actual March-September 2005 Volume as a % of Average
Lake Abraham Inflow 2,240,000 104 98-108 95 20/30* 102
Brazeau Reservoir Inflow 1,150,000 80 74-98 68 12/41** 134
North Saskatchewan River at Edmonton 4,998,000 85 78-102 74 28/91 123

Note: Click on the site Location to see the Water Supply Forecast graphically

Click here to see the table containing the remaining forecast for the season along with the recorded volume to date

* Lake Abraham is compared to 30 years of data
** Brazeau Reservoir is compared to 41 years of data

Average is calculated for the March 1 to September 30 period from 1912 to 2001

NOTE: There is: a 50% chance that the actual natural flow will fall within the probable range given; a 25% chance that the actual flow will be less than the lower bound of the probable range given; and a 10% chance that the actual natural flow will be less than the reasonable minimum. Actual day to day streamflow conditions Jun vary throughout the season as a result of the effects of streamflow diversion and reservoir storage.

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