Water Supply Outlook for Alberta

July 2008

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

Volume Forecast for March 1 to September 30, 2008
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-September 2007
Volume as a
% of Median
Milk River at
Western Crossing
59,400 109 106-117 103 40/70* n/a**
Milk River
at Milk River
74,700 79 75-88 72 33/91 n/a**
Milk River at
Eastern Crossing
81,500 70 67-82 65 30/91 n/a**
Note: Click on the site Location to see the Water Supply Forecast graphically


* Western Crossing data is from 1931-2001

** The recorded March-September 2007 volumes will be published in the next Water Supply Outlook Report.

Median is calculated for the March 1 to September 30 period from 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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