Water Supply Outlook for Alberta

April 2017

Water Supply Forecast as of April 1, 2017 - Bow River Basin (Natural Flows)

Volume Forecast for April 1 to September 30, 2017 Year to date
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 2017 Volume as a % of Average Ranking (lowest to highest)
Bow River at Banff 1,093,000* 111 107-116 103 64/99 120** 97/99
Lake Minnewanka Inflow 170,000* 100 89-115 79 44/99 103** 60/99
Spray River near Banff 394,000* 113 105-120 99 70/99 113** 90/99
Kananaskis River 382,000* 103 94-114 85 44/99 88** 52/99
Bow River at Calgary 2,407,000* 108 103-113 98 56/99 178** 97/99
Elbow River 181,000* 94 81-117 69 42/99 312** 98/99
Highwood River 468,000* 87 70-104 54 36/99 189** 87/99

*NOTE: The forecast shown is the March to September 2017 forecast minus the recorded volume to date

** - Recorded 2017 natural volumes are preliminary and subject to change

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

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 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.

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