Water Supply Outlook for Alberta
May 2005
Table 4b Water Supply Forecast as of May 1, 2005 - Bow River Basin
(Natural Flows) |
Volume Forecast for May 1 to September 30, 2005 | 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 2005 Volume as a % of Average | Ranking (lowest to highest) | |
Bow River at Banff | 971,000* | 95 | 83-109 | 78 | 36/91 | 119** | 83/91 | |
Lake Minnewanka Inflow | 157,000* | 92 | 80-125 | 71 | 38/91 | 83** | 32/91 | |
Spray River near Banff | 308,000* | 89 | 79-110 | 77 | 31/91 | 136** | 86/91 | |
Kananaskis River | 346,000* | 90 | 81-111 | 76 | 32/91 | 108** | 61/91 | |
Bow River at Calgary | 2,101,000* | 93 | 77-112 | 70 | 36/91 | 105** | 60/91 | |
Elbow River | 156,000* | 79 | 66-107 | 60 | 33/91 | 97** | 48/91 | |
Highwood River | 428,000* | 76 | 62-107 | 54 | 32/91 | 77** | 39/91 |
*NOTE: The forecast shown is the March to September 2005 forecast minus the recorded volume to date Note: Click on the site Location to see the Water Supply Forecast graphically ** - Recorded 2005 natural volumes are preliminary and subject to change 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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