Water Supply Outlook for Alberta
May 2015
Water Supply Forecast as of May 1, 2015 - North Saskatchewan River Basin
(Natural Flows) |
Volume Forecast for May 1 to September 30, 2015 | 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 2015 Volume as a % of Average | Ranking (lowest to highest) | |
Lake Abraham Inflow | 1,929,000* | 93 | 89-100 | 84 | 27/100 | 90** | 39/100 | |
Brazeau Reservoir Inflow | 1,258,000* | 88 | 69-109 | 53 | 33/100 | 105** | 50/100 | |
North Saskatchewan River at Edmonton | 4,440,000* | 90 | 82-98 | 75 | 28/100 | 98** | 60/100 |
*NOTE: The forecast shown is the March to September 2015 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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