Water Supply Outlook for Alberta
April 2007
Table 7a - Water Supply Forecast as of April 1, 2007 - North Saskatchewan River Basin
(Natural Flows) |
Volume Forecast for March 1 to September 30, 2007 | ||||||
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) | Actual March-September 2006 Volume as a % of Average |
Lake Abraham Inflow | 2,219,000 | 103 | 98-110 | 95 | 19/30* | 101 |
Brazeau Reservoir Inflow | 1,478,000 | 103 | 82-129 | 73 | 22/41** | 63 |
North Saskatchewan River at Edmonton | 5,938,000 | 101 | 88-118 | 76 | 52/91 | 76 |
Note: Click on the site Location to see the Water Supply Forecast graphically |
* Lake Abraham is compared to 30 years of data ** Brazeau Reservoir is compared to 41 years of data
Average is calculated for the March 1 to September 30 period from 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. |
For technical enquires about this web page please contact Alberta Environment - Environmental Management Water Management Operations Branch at AENV-WebWS@gov.ab.ca