Water Supply Outlook for Alberta

July 2015

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

Volume Forecast for July 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-June 2015 Volume as a % of Average Ranking (lowest to highest)
Bow River at Banff 421,000* 82 74-88 68 11/99 95** 36/99
Lake Minnewanka Inflow 60,000* 75 62-92 51 13/99 72** 12/99
Spray River near Banff 148,000* 89 81-96 75 29/99 74** 8/99
Kananaskis River 159,000* 87 80-97 73 19/99 94** 41/99
Bow River at Calgary 973,000* 85 80-90 75 21/99 87** 24/99
Elbow River 71,000* 83 71-107 61 38/99 85** 35/99
Highwood River 123,000* 71 45-107 22 35/99 78** 28/99

*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