Water Supply Outlook for Alberta

April 2002

Table 4a Water Supply Forecast as of April 1, 2002 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30
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 2001 Volume as a % of Average
Bow River at Banff 989,000 92 79-109 71 27/84 72
Lake Minnewanka Inflow 170,000 90 68-119 60 32/84 67
Spray River near Banff 329,000 90 72-117 67 30/84 55
Kananaskis River 367,000 89 72-112 66 26/84 66
Bow River at Calgary 2,214,000 91 72-112 65 28/84 66
Elbow River 180,000 82 60-111 51 33/84 64
Highwood River 469,000 74 49-109 37 28/84 49

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

Click here to see the table containing the remaining forecast for the season along with the recorded volume to date

Average is calculated for the March 1 to September 30 period from 1912 to 1995

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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