Water Supply Outlook for Alberta

February 2018

Water Supply Forecast as of February 1, 2018 - Bow River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2018
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 2017 Volume as a % of Average
Bow River at Banff 1,055,000 105 99-111 94 49/99 116
Lake Minnewanka Inflow 193,000 109 98-123 87 55/99 101
Spray River near Banff 402,000 112 105-119 99 70/99 92
Kananaskis River 392,000 102 92-113 82 44/99 95
Bow River at Calgary 2,470,000 107 102-112 98 56/99 104
Elbow River 189,000 94 84-116 76 42/99 84
Highwood River 572,000 103 86-130 70 47/99 82


Average is calculated for the March 1 to September 30 period from 1981 to 2009

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