Water Supply Outlook for Alberta

March 2018

Water Supply Forecast as of March 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 1,104,000 109 105-115 101 60/99 116
Lake Minnewanka Inflow 189,000 107 95-121 84 53/99 101
Spray River near Banff 414,000 115 111-119 108 74/99 92
Kananaskis River 405,000 106 96-116 87 50/99 95
Bow River at Calgary 2,536,000 110 105-115 101 65/99 104
Elbow River 199,000 98 88-120 80 49/99 84
Highwood River 562,000 101 82-120 65 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