Water Supply Outlook for Alberta

February 2016

Water Supply Forecast as of February 1, 2016 - Oldman River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2016
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-September 2015 Volume as a % of Average
St. Mary River 574,000* 86 79-92 74 21/99 79
Belly River 215,000 92 84-104 77 30/99 80
Waterton River 503,000 92 80-108 70 27/99 79
Oldman River near Brocket 891,000 91 79-102 68 32/99 79
Oldman River at Lethbridge 2,550,000 90 77-103 66 36/99 70

 

* - This value is the natural volume and includes the U.S. share

Average is calculated for the March 1 to September 30 period from 1981 to 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 potential 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