Water Supply Outlook for Alberta

November 2009

Table 2 - Recorded March 1 to September 30, 2009 Natural Runoff Volumes - Oldman River Basin (Natural Flows)

2009 Recorded Volumes
March 1 to September 30 		2009 Forecast Volumes
Locations Volume in dam3 Volume as a
% of Average 		Ranking (lowest to highest) Average difference between Forecast and Recorded natural volumes
St. Mary River 528,000** 71 16/91 6.3%
Belly River 202,000* 83 22/91 3.8%
Waterton River 467,000* 77 19/91 6.0%
Oldman River near Brocket 710,000* 65 16/91 13.8%
Oldman River at Lethbridge 1,988,000* 67 17/91 9.5%

* - 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

For technical enquires about this web page please contact Alberta Environment - Environmental Management Water Management Operations Branch at AENV-WebWS@gov.ab.ca