Water Supply Outlook for Alberta
March 2004
| Table 3 - Water Supply Forecast as of March 1, 2004 - Oldman River Basin
(Natural Flows) |
| Volume Forecast for March 1 to September 30, 2004 | ||||||
| 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 2003 Volume as a % of Average |
| St. Mary River | 552,000* | 75 | 56-110 | 44 | 19/91 | 71 |
| Belly River | 185,000 | 75 | 65-107 | 54 | 14/91 | 81 |
| Waterton River | 465,000 | 77 | 57-113 | 47 | 19/91 | 63 |
| Oldman River near Brocket | 852,000 | 78 | 61-122 | 44 | 25/91 | 70 |
| Oldman River at Lethbridge | 2,126,000 | 71 | 53-97 | 41 | 20/91 | 64 |
|
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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