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2025.11.03 Conditions Update and Lac Seul Outflow Increase

High winds overnight on November 2nd caused a trip on the transmission line to Ear Falls. As a result, the dam lost power and there was no flow out of Lac Seul for a 6-hour window. The outage caused levels on the English River between Lac Seul and Manitou Falls to drop as the Manitou Falls generating station was still running to provide power to the area. Dam operators were able to restore Lac Seul outflow to 154 m3/s this morning.

To help increase water levels upstream of Manitou Falls, the Lac Seul outflow increase to 200 m3/s originally scheduled for November 5th, will be rescheduled to today (November 3rd) after power is restored. With the earlier outflow increase, the level of Lac Seul is expected to drop between 1 to 1.5 cm (0.5 in to 0.6 in) before the next Noticeboard update.