Water Supply Outlook for Alberta

April 2009

Water Supply Forecast as of April 1, 2009 - Red Deer River Basin (Natural Flows)

Volume Forecast for April 1 to September 30, 2009 Year to date
Locations Volume in dam3 Volume as a % of Average Probable Range as a % of Average Potential Minimum as % of Average Forecast Ranking (lowest to highest) Recorded March 2009 Volume as a % of Average Ranking (lowest to highest)
Red Deer River
at Dickson Dam
767,000* 85 67-102 61 37/91 68** 15/91
Red Deer River
at Red Deer
1,006,000* 80 60-100 53 38/91 60** 28/91

*NOTE: The forecast shown is the March to September 2009 forecast minus the recorded volume to date

** Recorded 2009 natural volumes 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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