Water Supply Outlook for Alberta
May 2011
| Water Supply Forecast as of May 1, 2011 - Bow River Basin
(Natural Flows) |
| Volume Forecast for March 1 to September 30, 2011 | ||||||
| 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-September 2010 Volume as a % of Average |
| Bow River at Banff | 1,148,000 | 107 | 100-122 | 88 | 65/91 | 69 |
| Lake Minnewanka Inflow | 196,000 | 105 | 93-119 | 84 | 54/91 | 89 |
| Spray River near Banff | 395,000 | 108 | 101-120 | 89 | 35/91 | 73 |
| Kananaskis River | 434,000 | 106 | 98-126 | 85 | 56/91 | 75 |
| Bow River at Calgary | 2,500,000 | 103 | 95-121 | 83 | 54/91 | 77 |
| Elbow River | 215,000 | 99 | 90-115 | 76 | 55/91 | 88 |
| Highwood River | 653,000 | 104 | 91-121 | 83 | 56/91 | 79 |
|
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 potential minimum. Actual day to day streamflow conditions may vary throughout the season as a result of the effects of streamflow diversion and reservoir storage. |
For technical enquires about this web page please contact Alberta Environment - Environmental Management Water Management Operations Branch at AENV-WebWS@gov.ab.ca
