Flood peak scaled back

New projections from the BC River Forecast Centre have scaled back the peak expected on the Similkameen River later this week.

Near Hedley, the river is forecast to peak at 685 cubic metres a second on Saturday, down from previous estimate of 800. The river should stay high for Sunday before beginning a gradual decline next week. The change to the forecast puts the flooding at a 10-year return period. 

Flows should still exceed last week’s high point of just over 600 cubic metres a second.

Data from just south of the border in Nighthawk predicts the river will plateau at a similar height as last week. 

Similkameen flows are already high enough to push up Osoyoos Lake levels, which began climbing again overnight. Widespread evacuation alerts and several orders along the Similkameen floodplain and Osoyoos Lake remain in place.

Environment Canada is also warning about the likelihood of heavy rain and thunderstorms in the Okanagan and Boundary. The Similkameen wasn’t included in that alert, but is showing a 30-40 per cent chance of thunderstorms through to Thursday.

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