Water Supply Outlook for Alberta

April 2008

Table 4a - Water Supply Forecast as of April 1, 2008 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2008
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 2007 Volume as a % of Average
Bow River at Banff 968,000 90 83-102 75 26/91 n/a**
Lake Minnewanka Inflow 166,000 89 76-109 67 33/91 n/a**
Spray River near Banff 348,000 95 83-114 76 35/91 n/a**
Kananaskis River 398,000 97 87-117 78 40/91 n/a**
Bow River at Calgary 2,203,000 91 80-108 72 29/91 n/a**
Elbow River 205,000 94 75-129 632 50/91 n/a**
Highwood River 539,000 86 69-125 55 39/91 n/a**
Note: Click on the site Location to see the Water Supply Forecast graphically

 

** The recorded March-September 2007 volumes will be published in the next Water Supply Outlook Report.

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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