Water Supply Outlook for Alberta
March 2005
Table 3 - Water Supply Forecast as of March 1, 2005 - Oldman River Basin
(Natural Flows) |
Volume Forecast for March 1 to September 30, 2005 | ||||||
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 2004 Volume as a % of Average |
St. Mary River | 527,000* | 71 | 55-99 | 49 | 16/91 | 80 |
Belly River | 188,000 | 77 | 61-102 | 55 | 16/91 | 92 |
Waterton River | 433,000 | 71 | 57-105 | 49 | 17/91 | 76 |
Oldman River near Brocket | 803,000 | 74 | 54-105 | 48 | 22/91 | 68 |
Oldman River at Lethbridge | 2,020,000 | 68 | 50-100 | 44 | 18/91 | 69 |
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 may vary throughout the season as a result of the effects of streamflow diversion and reservoir storage. |
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