Water Supply Outlook for Alberta
May 2005
Table 6b - Water Supply Forecast as of May 1, 2005 - North Saskatchewan River Basin
(Natural Flows) |
Volume Forecast for May 1 to September 30, 2005 | Year to date | |||||||
Locations | Volume in dam3 | Volume as a % of Average | Probable Range as a % of Average |
Reasonable Minimum as % of Average |
Forecast Ranking (lowest to highest) | Recorded March-April 2005 Volume as a % of Average | Ranking (lowest to highest) | |
Lake Abraham Inflow | 1,962,000* | 92 | 87-103 | 84 | 13/43** | 164**** | 30/30 | |
Brazeau Reservoir Inflow | 1,181,000* | 89 | 70-117 | 63 | 18/44*** | 139**** | 36/41 | |
North Saskatchewan River at Edmonton | 4,808,000* | 90 | 72-105 | 67 | 38/91 | 96**** | 71/91 |
*NOTE: The forecast shown is the March to September 2005 forecast minus the recorded volume to date Click on the site Location to see the Water Supply Forecast graphically ** Lake Abraham is compared to 30 years of data 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. |
For technical enquires about this web page please contact Alberta Environment - Environmental Management Water Management Operations Branch at AENV-WebWS@gov.ab.ca