Water Supply Outlook for Alberta

July 2017

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

Volume Forecast for July 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-June 2017 Volume as a % of Average Ranking (lowest to highest)
Bow River at Banff 653,000* 127 119-133 113 80/99 139** 91/99
Lake Minnewanka Inflow 79,000* 98 86-116 75 42/99 128** 82/99
Spray River near Banff 166,000* 100 93-107 86 40/99 110** 63/99
Kananaskis River 176,000* 96 89-107 82 30/99 110** 61/99
Bow River at Calgary 1,212,000* 105 101-110 96 58/99 126** 82/99
Elbow River 73,000* 86 74-110 64 40/99 95** 45/99
Highwood River 146,000* 84 58-121 35 45/99 101** 47/99

*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