Water Supply Outlook for Alberta
August 2006
Table 4a - Water Supply Forecast as of August 1, 2006 - Oldman River Basin
(Natural Flows) |
Volume Forecast for March 1 to September 30, 2006 | ||||||
Locations | Volume in dam3 | Volume as a % of Average | Probable Range as a % of Average | Reasonable Minimum as % of Average | Forecast Ranking (lowest to highest) | Recorded March-September 2005 Volume as a % of Average |
St. Mary River | 712,000* | 96 | 94-98 | 93 | 41/91 | 77 |
Belly River | 234,000 | 96 | 94-99 | 93 | 39/91 | 90 |
Waterton River | 613,000 | 101 | 99-104 | 98 | 51/91 | 85 |
Oldman River near Brocket | 919,000 | 84 | 83-88 | 82 | 31/91 | 132 |
Oldman River at Lethbridge | 2,656,000 | 89 | 81-92 | 81 | 39/91 | 106 |
Note: Click on the site Location to see the Water Supply Forecast graphically * - This value is the natural volume and includes the U.S. share 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 Jun vary throughout the season as a result of the effects of streamflow diversion and reservoir storage. |
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