Water Supply Outlook for Alberta
March 2003
| Table 3 - Water Supply Forecast as of March 1, 2003 - Oldman River Basin
(Natural Flows) |
| Volume Forecast for March 1 to September 30 | ||||||
| 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 2002 Volume as a % of Average |
| St. Mary River | 551,000* | 73 | 54-111 | 47 | 15/84 | 155 |
| Belly River | 183,000 | 75 | 55-110 | 50 | 13/84 | 150 |
| Waterton River | 449,000 | 68 | 46-96 | 40 | 14/84 | 143 |
| Oldman River near Brocket | 672,000 | 61 | 41-99 | 36 | 11/84 | 147 |
| Oldman River at Lethbridge | 1,920,000 | 64 | 44-102 | 38 | 15/84 | 151 |
|
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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