Water Supply Outlook for Alberta
April 2002
Table 3b - Water Supply Forecast as of April 1, 2002 - Oldman River Basin
(Natural Flows) |
Volume Forecast for April 1 to September 30 | 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 2002 Volume as a % of Average | Ranking (lowest to highest) | |
St. Mary River | 649,000** | 88 | 58-108 | 51 | 30/84 | 44 | 13/84 | |
Belly River | 210,000* | 88 | 55-111 | 50 | 26/84 | 92 | 48/84 | |
Waterton River | 548,000* | 85 | 50-101 | 42 | 25/84 | 56 | 18/84 | |
Oldman River near Brocket | 801,000* | 75 | 50-112 | 39 | 21/84 | 47 | 4/84 | |
Oldman River at Lethbridge | 2,285,000* | 80 | 50-108 | 42 | 25/84 | 40 | 7/84 |
*NOTE: The forecast shown is the March to September 2002 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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