Water Supply Outlook for Alberta

April 2007

Table 5a - Water Supply Forecast as of April 1, 2007 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2007
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-September 2006 Volume as a % of Average
Bow River at Banff 1,135,000 106 96-122 87 63/91 84
Lake Minnewanka Inflow 207,000 111 92-135 83 64/91 77
Spray River near Banff 384,000 105 94-121 83 53/91 98
Kananaskis River 428,000 105 91-125 79 53/91 88
Bow River at Calgary 2,571,000 106 90-124 80 60/91 83
Elbow River 204,000 93 74-120 61 49/91 80
Highwood River 600,000 96 76-124 59 48/91 71

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

 

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 may vary throughout the season as a result of the effects of streamflow diversion and reservoir storage.

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