Water Supply Outlook for Alberta

September 2009

Table 2 - Recorded March 1 to August 31, 2009 Natural Runoff Volumes - Oldman River Basin (Natural Flows)

2009 Recorded Volumes
March 1 to August 31
Locations Volume in dam3 Volume as a
% of Average 		Ranking (lowest to highest)
St. Mary River 515,000** 72 16/91
Belly River 188,200* 82 22/91
Waterton River 457,100* 79 20/91
Oldman River near Brocket 685,000* 66 16/91
Oldman River at Lethbridge 1,898,000* 67 18/91

* - Recorded 2009 natural volumes are preliminary and subject to change
** - This value is the natural volume and includes the U.S. share
Average and rankings are based on the period 1912 to 2001

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