Update on Flows From Lake Superior at Sault Ste. Marie – May 1, 2015
Posted on: May 1, 2015

The following information was received from the Lake Superior International Board of Control, a division of the International Joint Commission:

Update regarding the gate setting of the Compensating Works [the structure controlling L. Superior levels at Sault Ste. Marie, Ontario] expected in May.

 Providing ice conditions allow it, the Compensating Works are expected to be set to the equivalent of approximately two gates fully open tomorrow, Friday, May 1st.  This will be achieved by partially opening twelve gates (Gates #3 to #14) a total of 31 cm (12 in.) each.  Anglers should remain cautious of changing flows and water levels and the potential for hazardous ice conditions in the St. Marys Rapids.  Note that conditions will be reassessed and the gate setting may be increased again later in the month, once ice conditions improve.  We will advise of any changes at that time.

 As usual, there will be no change to Gate #1, which supplies water to the channel north of the Fishery Remedial Dike.  Furthermore, Gate #2 will remain closed for the time being in order to provide lower velocities and potential angling opportunities along the northern portion of the main rapids.  This is something that’s been suggested in the past and we’d welcome feedback on this approach. 


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