Water Supply Outlook for Alberta
May 2013
Water Supply Forecast as of May 1, 2013 - North Saskatchewan River Basin
(Natural Flows) |
Volume Forecast for May 1 to September 30, 2013 | 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 2013 Volume as a % of Average | Ranking (lowest to highest) | |
Lake Abraham Inflow | 2,073,000* | 100 | 96-107 | 91 | 49/100 | 104** | 50/100 | |
Brazeau Reservoir Inflow | 1,356,000* | 95 | 76-116 | 60 | 49/100 | 56** | 3/100 | |
North Saskatchewan River at Edmonton | 4,802,000* | 97 | 89-105 | 82 | 44/100 | 92** | 78/100 |
*NOTE: The forecast shown is the March to September 2013 forecast minus the recorded volume to date   Average is calculated for the March 1 to September 30 period 1981 to 2010 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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