Water Supply Outlook for Alberta
August 2004
| Table 3a - Water Supply Forecast as of August 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 | 564,000* | 76 | 73-82 | 70 | 17/91 | 71 |
| Belly River | 216,000 | 88 | 88-97 | 86 | 28/91 | 81 |
| Waterton River | 475,000 | 78 | 77-85 | 75 | 19/91 | 63 |
| Oldman River near Brocket | 668,000 | 61 | 60-66 | 58 | 13/91 | 70 |
| Oldman River at Lethbridge | 1,990,000 | 67 | 63-75 | 61 | 18/91 | 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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