Water Supply Outlook for Alberta

May 2008

Table 4a - Water Supply Forecast as of May 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 951,000 89 82-100 77 23/91 n/a**
Lake Minnewanka Inflow 169,000 91 79-112 68 35/91 n/a**
Spray River near Banff 351,000 96 85-113 77 38/91 n/a**
Kananaskis River 390,000 96 88-113 78 40/91 n/a**
Bow River at Calgary 2,181,000 90 81-106 73 28/91 n/a**
Elbow River 204,000 94 76-118 63 50/91 n/a**
Highwood River 503,000 80 66-108 55 34/91 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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