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Lake of the Woods outflow reductions affecting Winnipeg River

Posted on: November 23, 2019  |  

Here is the latest update from the Lake of the Woods Secretariat

The scheduled changes for Lake of the Woods outflow reductions as described in last week’s message continues.

The first of the planned outflow decreases occurred on Friday, November 15 and Monday, November 18, reducing outflow by a total of 100 m³/s.

The next reductions are as follows:

Friday, November 22, reduction from 950 to 900 m³/s.
Monday, November 25, reduction from 900 to 850 m³/s.

The Winnipeg River level is expected to decline as follows in response to each of these flow reductions:

Below Norman Dam: 15 cm (6 in)
Above Kimberly Rapids: 12 cm (5 in)
Winnipeg River Marina: 12 cm (5 in)
Near Locke Bay: 12 cm (5 in)
Above Myrtle Rapids: 11 cm (4.5 in)
Above the Dalles: 11 cm (4.5 in)
Above Throat Rapids: 11 cm (4.5 in)
Minaki: 10 cm (4 in)

The last of the currently planned outflow changes is scheduled for Friday, November 29, with outflow being reduced from 850 to 800 m³/s.

Manitoba Hydro has provided the following level forecast for the Winnipeg River through the Whiteshell over the next week:

Nutimik Lake: decline by 35 cm (1.2 ft)
Dorothy Lake: decline by 28 cm (0.9 ft)
Margaret/ Eleanor Lake : decline by 24 cm (0.8 ft)
Sylvia Lake: decline by 14 cm (0.5 ft)

The high flows along the Winnipeg River and English River this winter will create potentially dangerous currents and unsafe ice conditions, including in some areas that normally have a stable ice cover. The Board urges caution when on or near the Winnipeg and English Rivers. Areas of high current in Lake of the Woods, particularly in the Kenora area near the outlet channels, will also have increased risk to ice safety.

Lake of the Woods Secretariat
secretariat@lwcb.ca

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