Water Supply Outlook for Alberta

August 2015

Water Supply Forecast as of August 1, 2015 - Bow River Basin (Natural Flows)

Volume Forecast for August 1 to September 30, 2015 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-July 2015 Volume as a % of Average Ranking (lowest to highest)
Bow River at Banff 201,000* 78 70-87 62 4/99 85** 15/99
Lake Minnewanka Inflow 26,000* 65 52-78 40 4/99 65** 5/99
Spray River near Banff 63,000* 78 65-92 53 12/99 65** 3/99
Kananaskis River 76,000* 81 72-90 65 8/99 87** 25/99
Bow River at Calgary 461,000* 78 72-83 67 9/99 78** 11/99
Elbow River 36,000* 79 70-88 61 28/99 80** 24/99
Highwood River 49,500* 62 22-103 0 27/99 70** 21/99

*NOTE: The forecast shown is the March to September 2015 forecast minus the recorded volume to date

** - Recorded 2015 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