Water Supply Outlook for Alberta
May 2007
| Table 5a - Water Supply Forecast as of May 1, 2007 - Bow River Basin
(Natural Flows) |
| Volume Forecast for March 1 to September 30, 2007 | ||||||
| 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 2006 Volume as a % of Average |
| Bow River at Banff | 1,164,000 | 109 | 103-125 | 95 | 66/91 | 84 |
| Lake Minnewanka Inflow | 212,000 | 114 | 94-138 | 87 | 67/91 | 77 |
| Spray River near Banff | 398,000 | 108 | 97-120 | 89 | 62/91 | 98 |
| Kananaskis River | 439,000 | 107 | 95-124 | 87 | 56/91 | 88 |
| Bow River at Calgary | 2,642,000 | 109 | 94-125 | 87 | 65/91 | 83 |
| Elbow River | 211,000 | 97 | 81-116 | 69 | 53/91 | 80 |
| Highwood River | 616,000 | 98 | 80-123 | 64 | 52/91 | 71 |
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Note: Click on the site Location to see the Water Supply Forecast graphically
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Average is calculated for the March 1 to September 30 period from 1912 to 2001 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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