Water Supply Outlook for Alberta

August 2006

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

Volume Forecast for August 1 to September 30, 2006 Year to date
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) Recorded March-July 2006 Volume as a % of Average Ranking (lowest to highest)
Lake Abraham Inflow 717,000* 95 83-115 70 21/43** 107**** 20/30
Brazeau Reservoir Inflow 285,000* 73 60-119 56 11/44*** 59**** 3/41
North Saskatchewan River at Edmonton 1,411,000* 82 72-96 62 25/91 71**** 11/91

*NOTE: The forecast shown is the March to September 2006 forecast minus the recorded volume to date

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

** Lake Abraham is compared to 30 years of data
*** Brazeau Reservoir is compared to 41 years of data
**** Recorded 2006 natural flows are preliminary and subject to change
Average is calculated for the period 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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