Water Supply Outlook for Alberta
July 2009
| Water Supply Forecast as of July 1, 2009 - Bow River Basin
(Natural Flows) |
| Volume Forecast for March 1 to September 30, 2009 | ||||||
| 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 2008 Volume as a % of Average |
| Bow River at Banff | 876,000 | 82 | 76-88 | 67 | 10/91 | 85 |
| Lake Minnewanka Inflow | 156,000 | 84 | 78-94 | 71 | 27/91 | 125 |
| Spray River near Banff | 297,000 | 81 | 75-91 | 73 | 14/91 | 107 |
| Kananaskis River | 299,000 | 73 | 71-83 | 66 | 13/91 | 107 |
| Bow River at Calgary | 1,859,000 | 76 | 71-86 | 65 | 10/91 | 105 |
| Elbow River | 162,000 | 75 | 71-82 | 67 | 37/91 | 139 |
| Highwood River | 384,000 | 61 | 58-72 | 56 | 17/91 | 128 |
|
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
