Water Supply Outlook for Alberta
May 2009
| Water Supply Forecast as of May 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 | 952,000 | 89 | 83-95 | 78 | 23/91 | 85 |
| Lake Minnewanka Inflow | 157,000 | 84 | 70-103 | 62 | 29/91 | 125 |
| Spray River near Banff | 337,000 | 92 | 82-105 | 76 | 32/91 | 107 |
| Kananaskis River | 380,000 | 93 | 83-104 | 76 | 36/91 | 107 |
| Bow River at Calgary | 2,140,000 | 88 | 78-99 | 73 | 25/91 | 105 |
| Elbow River | 187,000 | 86 | 71-101 | 64 | 38/91 | 139 |
| Highwood River | 540,000 | 86 | 61-114 | 56 | 39/91 | 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
