Water Supply Outlook for Alberta
August 2011
Water Supply Forecast as of August 1, 2011 - North Saskatchewan River Basin
(Natural Flows) |
Volume Forecast for August 1 to September 30, 2011 | 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-July 2011 Volume as a % of Average | Ranking (lowest to highest) | |
Lake Abraham Inflow | 782,000* | 103 | 91-108 | 83 | 28/43** | 100**** | 15/30 | |
Brazeau Reservoir Inflow | 435,000* | 112 | 108-122 | 91 | 29/44*** | 142**** | 38/41 | |
North Saskatchewan River at Edmonton | 1,916,000* | 111 | 91-131 | 79 | 68/91 | 132**** | 82/91 |
*NOTE: The forecast shown is the March to September 2011 forecast minus the recorded volume to date  
**** Recorded 2011 natural flows are preliminary and subject to change Average is calculated for the period 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 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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