Water Supply Outlook for Alberta
July 2002
Table 4b Water Supply Forecast as of July 1, 2002 - Bow River Basin
(Natural Flows) |
Volume Forecast for July 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-June 2002 Volume as a % of Average | Ranking (lowest to highest) | |
Bow River at Banff | 531,000* | 94 | 82-108 | 74 | 36/84 | 91** | 28/84 | |
Lake Minnewanka Inflow | 76,900* | 87 | 73-127 | 61 | 31/84 | 116** | 63/84 | |
Spray River near Banff | 170,000* | 97 | 82-127 | 73 | 37/84 | 95** | 42/84 | |
Kananaskis River | 196,000* | 95 | 75-112 | 70 | 38/84 | 120** | 66/84 | |
Bow River at Calgary | 1,164,000* | 94 | 76-114 | 66 | 40/84 | 99** | 41/84 | |
Elbow River | 95,600* | 104 | 90-134 | 79 | 57/84 | 134** | 69/84 | |
Highwood River | 212,000* | 106 | 74-149 | 51 | 56/84 | 118** | 62/84 |
*NOTE: The forecast shown is the March to September 2002 forecast minus the recorded volume to date Note: Click on the site Location to see the Water Supply Forecast graphically ** - Recorded 2002 natural volumes are preliminary and subject to change Average is calculated for the period 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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