Water Supply Outlook for Alberta

June 2017

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

Volume Forecast for June 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-May 2017 Volume as a % of Average Ranking (lowest to highest)
Bow River at Banff 996,000* 121 115-126 111 77/99 131** 82/99
Lake Minnewanka Inflow 157,000* 115 104-130 95 62/99 136** 88/99
Spray River near Banff 295,000* 105 98-112 91 48/99 108** 70/99
Kananaskis River 310,000* 103 96-114 89 42/99 120** 77/99
Bow River at Calgary 2,021,000* 110 106-114 102 61/99 129** 84/99
Elbow River 145,000* 98 86-123 74 51/99 116** 63/99
Highwood River 419,000* 109 85-147 63 60/99 145** 70/99

*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