Water Supply Outlook for Alberta

June 2015

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

Volume Forecast for June 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-May 2015 Volume as a % of Average Ranking (lowest to highest)
Bow River at Banff 707,000* 86 81-91 78 16/99 108** 65/99
Lake Minnewanka Inflow 108,000* 78 68-94 58 21/99 90** 38/99
Spray River near Banff 251,000* 89 82-97 75 31/99 86** 44/99
Kananaskis River 245,000* 82 75-88 69 15/99 118** 75/99
Bow River at Calgary 1,564,000* 85 81-90 77 21/99 98** 50/99
Elbow River 118,000* 80 67-104 56 33/99 106** 50/99
Highwood River 294,000* 76 52-114 30 35/99 112** 44/99

*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