Water Supply Outlook for Alberta
May 2003
| Table 4a Water Supply Forecast as of May 1, 2003 - Bow River Basin
(Natural Flows) |
| Volume Forecast for March 1 to September 30, 2003 | ||||||
| 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 |
| Bow River at Banff | 960,000 | 89 | 76-109 | 70 | 21/85 | 89 |
| Lake Minnewanka Inflow | 154,000 | 81 | 67-103 | 65 | 22/85 | 101 |
| Spray River near Banff | 307,000 | 84 | 70-100 | 66 | 17/85 | 92 |
| Kananaskis River | 357,000 | 86 | 75-109 | 73 | 21/85 | 117 |
| Bow River at Calgary | 2,122,000 | 87 | 70-107 | 64 | 22/85 | 95 |
| Elbow River | 167,000 | 76 | 64-114 | 62 | 26/85 | 113 |
| Highwood River | 420,000 | 66 | 54-102 | 50 | 21/85 | 109 |
|
Note: Click on the site Location to see the Water Supply Forecast graphically Average is calculated for the March 1 to September 30 period from 1912 to 1995 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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