Water Supply Outlook for Alberta
May 2012
Water Supply Forecast as of May 1, 2012 - North Saskatchewan River Basin
(Natural Flows) |
Volume Forecast for May 1 to September 30, 2012 | 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-April 2012 Volume as a % of Average | Ranking (lowest to highest) | |
Lake Abraham Inflow | 2,219,000* | 104 | 99-108 | 96 | 27/32** | 146**** | 29/30 | |
Brazeau Reservoir Inflow | 1,404,000* | 106 | 87-121 | 76 | 25/41*** | 100**** | 21/41 | |
North Saskatchewan River at Edmonton | 6,007,000* | 112 | 97-124 | 89 | 68/91 | 86**** | 31/91 |
*NOTE: The forecast shown is the March to September 2012 forecast minus the recorded volume to date  
**** Recorded 2012 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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