Water Supply Outlook for Alberta
May 2004
Table 3b - Water Supply Forecast as of May 1, 2004 - Oldman River Basin
(Natural Flows) |
Volume Forecast for May 1 to September 30, 2004 | Year to date | |||||||
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-April 2004 Volume as a % of Average | Ranking (lowest to highest) | |
St. Mary River | 450,000** | 68 | 53-100 | 48 | 16/91 | 103*** | 54/91 | |
Belly River | 154,000* | 69 | 62-99 | 53 | 10/91 | 119*** | 62/91 | |
Waterton River | 413,000* | 75 | 59-111 | 51 | 20/91 | 75*** | 42/91 | |
Oldman River near Brocket | 693,000* | 72 | 55-114 | 40 | 23/91 | 92*** | 53/91 | |
Oldman River at Lethbridge | 1,770,000* | 67 | 51-98 | 41 | 19/91 | 82*** | 37/91 |
*NOTE: The forecast shown is the March to September 2004 forecast minus the recorded volume to date 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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