Water Supply Outlook for Alberta

August 2008

Table 4a - Water Supply Forecast as of August 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 925,000 86 83-90 82 19/91 n/a**
Lake Minnewanka Inflow 233,000 125 121-136 119 76/91 n/a**
Spray River near Banff 382,000 104 101-109 100 53/91 n/a**
Kananaskis River 421,000 103 101-108 100 52/91 n/a**
Bow River at Calgary 2,582,000 106 103-111 101 60/91 n/a**
Elbow River 304,000 139 134-161 131 79/91 n/a**
Highwood River 835,000 133 131-138 129 73/91 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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