Water Supply Outlook for Alberta

May 2005

Table 2b - Water Supply Forecast as of May 1, 2005 - Milk River Basin (Natural Flows)

Volume Forecast for May 1 to September 30, 2005 Year to date
Locations Volume
in dam3
Volume as a
% of Median
Probable Range as a % of Median Reasonable Minimum as
% of Median
Forecast Ranking (lowest to highest) Recorded March-April 2005 Volume as a % of Median Ranking (lowest to highest)
Milk River at
Western Crossing
18,600* 58 37-77 16 25/72** 28*** 6/72**
Milk River
at Milk River
31,100* 62 39-80 17 27/91 28*** 6/91
Milk River at
Eastern Crossing
33,300* 58 36-79 15 27/91 26*** 3/91

* NOTE: The forecast shown is the March to September 2005 forecast minus the recorded volume to date

Click on the site Location to see the Water Supply Forecast graphically

** Western Crossing data is from 1931-2001

*** Recorded 2005 natural volumes are preliminary and subject to change

Median is calculated for period 1912 to 2001

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