Water Supply Outlook for Alberta
June 2017
Water Supply Forecast as of June 1, 2017 - Bow River Basin
(Natural Flows) |
Volume Forecast for June 1 to September 30, 2017 | 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-May 2017 Volume as a % of Average | Ranking (lowest to highest) | |
Bow River at Banff | 996,000* | 121 | 115-126 | 111 | 77/99 | 131** | 82/99 | |
Lake Minnewanka Inflow | 157,000* | 115 | 104-130 | 95 | 62/99 | 136** | 88/99 | |
Spray River near Banff | 295,000* | 105 | 98-112 | 91 | 48/99 | 108** | 70/99 | |
Kananaskis River | 310,000* | 103 | 96-114 | 89 | 42/99 | 120** | 77/99 | |
Bow River at Calgary | 2,021,000* | 110 | 106-114 | 102 | 61/99 | 129** | 84/99 | |
Elbow River | 145,000* | 98 | 86-123 | 74 | 51/99 | 116** | 63/99 | |
Highwood River | 419,000* | 109 | 85-147 | 63 | 60/99 | 145** | 70/99 |
*NOTE: The forecast shown is the March to September 2017 forecast minus the recorded volume to date ** - Recorded 2017 natural volumes are preliminary and subject to change Average is calculated for the March to September 30 period from 1981-2009 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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