Water Supply Outlook for Alberta
April 2014
| Water Supply Forecast as of April 1, 2014 - Oldman River Basin
(Natural Flows) |
| Volume Forecast for April 1 to September 30, 2014 | 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 2014 Volume as a % of Average | Ranking (lowest to highest) | |
| St. Mary River | 671,000** | 104 | 89-119 | 75 | 44/99 | 150*** | 78/99 | |
| Belly River | 245,000* | 108 | 100-120 | 92 | 56/99 | 78*** | 55/99 | |
| Waterton River | 576,000* | 109 | 97-125 | 87 | 51/99 | 85*** | 50/99 | |
| Oldman River near Brocket | 933,000* | 98 | 87-122 | 77 | 44/99 | 133*** | 80/99 | |
| Oldman River at Lethbridge | 2,804,000* | 104 | 92-115 | 82 | 53/99 | 135*** | 80/99 | |
|
*NOTE: The forecast shown is the March to September 2014 forecast minus the recorded volume to date ** - This value is the natural volume and includes the U.S. share*** - Recorded 2014 natural volumes are preliminary and subject to change Average is calculated for the March 1 to September 30 period 1981 to 2009 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
