Water Supply Outlook for Alberta
August 2011
Water Supply Forecast as of August 1, 2011 - Oldman River Basin
(Natural Flows) |
Volume Forecast for March 1 to September 30, 2011 | ||||||
Locations | Volume in dam3 | Volume as a % of Average | Probable Range as a % of Average | Potential Minimum as % of Average | Forecast Ranking (lowest to highest) | Recorded March-September 2010 Volume as a % of Average |
St. Mary River | 1,075,000* | 144 | 142-147 | 141 | 85/91 | 124 |
Belly River | 367,000 | 150 | 146-151 | 141 | 89/91 | 109 |
Waterton River | 766,000 | 126 | 125-129 | 121 | 79/91 | 85 |
Oldman River near Brocket | 1,658,000 | 152 | 149-153 | 146 | 82/91 | 94 |
Oldman River at Lethbridge | 4,032,000 | 130 | 127-151 | 124 | 78/91 | 114 |
* - This value is the natural volume and includes the U.S. share Average is calculated for the March 1 to September 30 period from 1912 to 2001
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