Water Supply Outlook for Alberta
April 2012
Water Supply Forecast as of April 1, 2012 - Bow River Basin
(Natural Flows) |
Volume Forecast for March 1 to September 30, 2012 | ||||||
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 2011 Volume as a % of Average |
Bow River at Banff | 1,208,000 | 113 | 101-122 | 89 | 69/91 | 95 |
Lake Minnewanka Inflow | 219,000 | 117 | 96-130 | 80 | 73/91 | 133 |
Spray River near Banff | 409,000 | 111 | 100-122 | 94 | 67/91 | N/A |
Kananaskis River | 405,000 | 99 | 90-113 | 75 | 45/91 | 97 |
Bow River at Calgary | 2,582,000 | 106 | 94-120 | 82 | 60/91 | 113 |
Elbow River | 206,000 | 95 | 79-109 | 70 | 51/91 | 128 |
Highwood River | 615,000 | 98 | 82-116 | 66 | 52/91 | 146 |
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