Water Supply Outlook for Alberta

April 2013

Water Supply Forecast as of April 1, 2013 - Milk River Basin (Natural Flows)

Volume Forecast for April 1 to September 30, 2013 Year to date
Locations Volume
in dam3
Volume as a
% of Median
Probable Range as a % of Median Potential Minimum as
% of Median
Forecast Ranking (lowest to highest) Recorded March 2013 Volume as a % of Median Ranking (lowest to highest)
Milk River at
Western Crossing
30,800* 95 67-146 43 30/98 204** 74/98
Milk River
at Milk River
47,200* 88 65-137 44 29/98 128** 51/98
Milk River at
Eastern Crossing
63,500* 101 75-126 53 27/98 85** 33/98

* NOTE: The forecast shown is the March to September 2013 forecast minus the recorded volume to date

** Recorded 2013 natural volumes are preliminary and subject to change

Median is calculated for period 1981 to 2008

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