Water Supply Outlook for Alberta

April 2006

Table 5a - Water Supply Forecast as of April 1, 2006 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2006
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 2005 Volume as a % of Average
Bow River at Banff 969,000 91 83-103 79 26/91 90
Lake Minnewanka Inflow 163,000 87 74-110 70 32/91 129
Spray River near Banff 339,000 93 81-114 78 33/91 107
Kananaskis River 387,000 95 88-115 79 38/91 113
Bow River at Calgary 2,219,000 91 79-108 74 30/91 111
Elbow River 198,000 91 73-128 66 45/91 143
Highwood River 554,000 89 68-120 56 41/91 197
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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