Water Supply Outlook for Alberta

May 2004

Table 6a - Water Supply Forecast as of May 1, 2004 - North Saskatchewan River Basin (Natural Flows)

Volume Forecast for March 1 to September 30, 2004
Locations Volume in dam3 Volume as a % of Average Probable Range as a % of Average Reasonable Minimum
as % of
Forecast Ranking (lowest to highest) Actual March-September 2003 Volume as a % of Average
Lake Abraham Inflow 1,946,000 90 85-94 82 9/30* 98
Brazeau Reservoir Inflow 1,001,000 70 60-87 57 6/41** 77
North Saskatchewan River at Edmonton 4,400,000 75 68-90 64 10/91 91

Note: Click on the site Location to see the Water Supply Forecast graphically

Click here to see the table containing the remaining forecast for the season along with the recorded volume to date

* 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