Recent precipitation across northwestern Ontario has helped to balance out lake levels on Lake of the Woods and Lac Seul, but flow conditions are expected to rapidly change over the next week.

The current level of Lake of the Woods is in its 50th percentile level for this time of the year, after rising by about 4 inches over the past week.

The Lake of the Woods Control Board says Lake of the Woods is expected to rise between 6 to 12 inches over the next week, but because the lake was drawn down over the winter to create storage for the spring melt, the board says the recent rise won’t result in a high lake level.

However, adding another 6 to 12 inches of water into Lake of the Woods will leave less room for further precipitation, so the board is directing larger outflow increases from Lake of the Woods this week and next.

By next week, the board says the Winnipeg River water levels are expected to be at high levels for the end of April, comparable to a moderately high June level.

Water outflows are scheduled to be increased today and on Monday, with each raise expected to raise the level of Winnipeg River by:

- 7 inches below Norman Dam,
- 7 inches above Kimberley Rapids,
- 6 inches at the Winnipeg River Marina,
- 6 inches near Locke Bay,
- 6 inches above Myrtle Rapids,
- 5.5 inches above the Dalles,
- 5.5 inches above Throat Rapids,
- 1 inch in Minaki from the second flow increase,

The Lake of the Woods Control Board says extra caution should be taken when on or near water bodies across the region due to the potential for rapidly changing flow conditions, with local runoff from snowfall and rainfall amounts. Further outflow increases are likely next week as well.

For Lac Seul, the board says it’s in its 45th percentile level of the year, after rising by about 2 inches over the past week. Moving forward, Lac Seul can expect to see another 6 to 10 inches of water over the next week. Outflows are scheduled to be increased today.