Water Supply Outlook for Alberta

June 2004

Table 6b - Water Supply Forecast as of June 1, 2004 - North Saskatchewan River Basin (Natural Flows)

Volume Forecast for June 1 to September 30, 2004 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-May 2004 Volume as a % of Average Ranking (lowest to highest)
Lake Abraham Inflow 1,686,000* 87 83-91 79 10/43** 96**** 10/30
Brazeau Reservoir Inflow 819,000* 73 61-86 56 10/44*** 56**** 1/41
North Saskatchewan River at Edmonton 3,710,000* 80 72-96 67 21/91 56**** 2/91

*NOTE: The forecast shown is the March to September 2004 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 2004 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 may vary throughout the season as a result of the effects of streamflow diversion and reservoir storage.


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