Water Supply Outlook for Alberta

April 2004

Table 4a - Water Supply Forecast as of April 1, 2004 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2004
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 2003 Volume as a % of Average
Bow River at Banff 954,000 89 80-102 71 23/91 84
Lake Minnewanka Inflow 156,000 83 73-114 67 26/91 93
Spray River near Banff 318,000 87 75-106 68 26/91 84
Kananaskis River 360,000 88 74-115 67 27/91 80
Bow River at Calgary 2,134,000 88 73-107 66 25/91 81
Elbow River 174,000 80 61-104 53 31/91 74
Highwood River 481,000 77 49-109 44 33/91 72

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 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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