Water Supply Outlook for Alberta

April 2008

Table 2b - Water Supply Forecast as of April 1, 2008 - Milk River Basin (Natural Flows)

Volume Forecast for April 1 to September 30, 2008 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 2008 Volume as a % of Median Ranking (lowest to highest)
Milk River at
Western Crossing
41,900* 85 49-112 26 29/72** 62*** 13/71*
Milk River
at Milk River
67,100* 85 49-111 26 37/91 46*** 22/91
Milk River at
Eastern Crossing
79,000* 85 47-112 23 34/91 41*** 23/91

* NOTE: The forecast shown is the March to September 2008 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 2008 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.

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