Water Supply Outlook for Alberta

June 2003

Table 6b - Water Supply Forecast as of June 1, 2003 - North Saskatchewan River Basin (Natural Flows)

Volume Forecast for June 1 to September 30, 2003 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-May 2003 Volume as a % of Average Ranking (lowest to highest)
Lake Abraham Inflow 1,732,000* 89 85-92 81 8/31** 122**** 16/18
Brazeau Reservoir Inflow 978,000* 88 75-103 60 13/32*** 124**** 26/29
North Saskatchewan River at Edmonton 4,094,000* 88 76-106 71 34/85 139**** 76/85

*NOTE: The forecast shown is the March to September 2003 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
*** Brazeau Reservoir is compared to 31 years of data
**** Recorded 2003 natural flows are preliminary and subject to change
Average is calculated for the period 1912 to 1995

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