Water Supply Outlook for Alberta

November 2013

Recorded March 1 to September 30, 2013 Natural Runoff Volumes - Oldman River Basin (Natural Flows)

2013 Recorded Volumes
March 1 to September 30 		2013 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 703,000** 105 45/99 17%
Belly River 254,000* 109 59/99 10%
Waterton River 509,000* 93 27/99 11%
Oldman River near Brocket 1,457,000* 148 83/99 46%
Oldman River at Lethbridge 3,391,000* 120 68/99 20%

* - Recorded 2013 natural volumes are preliminary and subject to change
** - This value is the natural volume and includes the U.S. share

Average is based on the period 1981 to 2009

Ranking is based on the period 1912 to 2009

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