Water levels about to rise from Shellmouth to St Lazare

October 19, 2021, 7:10 pm


Shellmouth Dam
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Water levels will be rising up to 2.5 feet on the river between Shellmouth Dam and St Lazare over the next few days.

Manitoba Infrastructure is conducting a bathymetric survey of the Assiniboine River between the Shellmouth Dam and St Lazare.

In order to get sufficient water levels to assist the bathymetric survey, Manitoba Infrastructure’s Hydrologic Forecast Centre reports the outflow from the Shellmouth Reservoir will be increasing.

Outflow from Shellmouth Dam will be increased to 500 cubic feet per second (cfs) from the current 150 cfs starting Wednesday, Oct. 20.

Outflow will be reduced back to the current outflow (150 cfs) after seven days of operation on Wednesday, Oct. 27.

This increase in outflow is expected to bring a level rise of 1.5 to 2.5 feet between the Shellmouth Dam and St-Lazare.

The level increase will diminish as the river moves downstream to Brandon and Winnipeg.

Property owners are advised to take necessary precautions.


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