Ice Jamming Observed Along the Qu’Appelle River in the Craven Area
The Water Security Agency (WSA) is advising the public that an ice jam has been observed within the Qu’Appelle River near Craven. Additional ice jamming could occur from Buffalo Pound Lake down to Pasqua Lake over the next few days where river ice remains. With higher flows expected within the Qu’Appelle River below Katepwa Lake in early April, ice jamming may occur within these lower reaches as well.
Ice jams are common this time of year, as warmer temperatures bring increased flows from melt and runoff, because channel systems still have ice.
Residents are advised to be aware of the potential for additional ice jams and possible localized flooding. The public should exercise caution as ice jams can be highly dynamic resulting in rapid changes in water levels — under no circumstances should anyone venture out onto an ice jam.
Warmer temperatures and higher flow rates may weaken the integrity of ice and reduce the potential for ice jamming.
WSA is aware of high water levels in the Craven area both above and below the Craven Control Structure. WSA’s operating objective for the spring melt is to maximize diversions into Last Mountain Lake to improve lake levels; however, the presence of ice is limiting the volumes moving into Last Mountain Lake and resulting in higher water levels in the area. As a result, to help reduce the risk of flooding above the Craven Control and damage to the control structure gates, some water is being passed downstream on the Qu’Appelle River. WSA is monitoring the situation closely and will make adjustments as conditions allow to direct more water into Last Mountain Lake.
For further information, please contact:
Sean Osmar
Sean.Osmar@wsask.ca
Water Security Agency
306.630.4643