Water Supply Outlook for Alberta
July 2006
Table 4a - Water Supply Forecast as of July 1, 2006 - Oldman River Basin
(Natural Flows) |
Volume Forecast for March 1 to September 30, 2006 | ||||||
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-September 2005 Volume as a % of Average |
St. Mary River | 772,000* | 104 | 97-111 | 93 | 52/91 | 77 |
Belly River | 248,000 | 101 | 96-109 | 94 | 50/91 | 90 |
Waterton River | 654,000 | 108 | 101-116 | 97 | 59/91 | 85 |
Oldman River near Brocket | 971,000 | 89 | 85-101 | 83 | 37/91 | 132 |
Oldman River at Lethbridge | 2,835,000 | 95 | 85-104 | 81 | 47/91 | 106 |
Note: Click on the site Location to see the Water Supply Forecast graphically * - This value is the natural volume and includes the U.S. share 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 Jun vary throughout the season as a result of the effects of streamflow diversion and reservoir storage. |
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