Water Supply Outlook for Alberta

March 2010

Water Supply Forecast as of March 1, 2010 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2010
Locations Volume in dam3 Volume as a % of Average Probable Range as a % of Average Potential Minimum
as % of Average
Forecast Ranking (lowest to highest) Recorded March-September 2009 Volume as a % of Average
Bow River at Banff 907,000 85 72-91 66 13/91 72
Lake Minnewanka Inflow 153,000 82 69-93 61 23/91 84
Spray River near Banff 324,000 89 74-102 69 29/91 84
Kananaskis River 371,000 91 83-102 72 33/91 83
Bow River at Calgary 2,039,000 84 72-94 65 21/91 80
Elbow River 186,000 85 69-97 58 38/91 86
Highwood River 472,000 75 51-102 45 31/91 67


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 potential minimum. Actual day to day streamflow conditions may vary throughout the season as a result of the effects of streamflow diversion and reservoir storage.


For technical enquires about this web page please contact Alberta Environment - Environmental Management Water Management Operations Branch at AENV-WebWS@gov.ab.ca