Water Supply Outlook for Alberta
July 2010
Water Supply Forecast as of July 1, 2010 - Bow River Basin
(Natural Flows) |
Volume Forecast for July 1 to September 30, 2010 | Year to date | |||||||
Locations | Volume in dam3 |
Volume as a % of Average |
Probable Range as a % of Average |
Potential Minimum as % of Average |
Forecast Ranking (lowest to highest) | Recorded March-June 2010 Volume as a % of Average | Ranking (lowest to highest) | |
Bow River at Banff | 498,000* | 88 | 78-97 | 70 | 25/91 | 64** | 3/91 | |
Lake Minnewanka Inflow | 77,100* | 88 | 72-97 | 67 | 37/91 | 80** | 23/91 | |
Spray River near Banff | 143,000* | 82 | 64-89 | 63 | 24/91 | 68** | 5/91 | |
Kananaskis River | 170,000* | 83 | 73-93 | 70 | 23/91 | 72** | 14/91 | |
Bow River at Calgary | 986,000* | 80 | 69-90 | 63 | 19/91 | 71** | 9/91 | |
Elbow River | 70,300* | 76 | 68-96 | 58 | 35/91 | 80** | 34/91 | |
Highwood River | 123,000* | 63 | 46-93 | 43 | 32/91 | 73** | 26/91 |
*NOTE: The forecast shown is the March to September 2010 forecast minus the recorded volume to date ** - Recorded 2010 natural volumes are preliminary and subject to change Average is calculated for the period 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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