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Province rules out breaching Assiniboine River; flows now receding

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Flood protection put up at homes south of Hoop and Holler Bend will be taken down over the week.

The start of the dismantling of residential dikes south-east of Portage La Prairie comes as the province today completely ruled out making a deliberate breach of the Assiniboine River to ease the pressure on riverbank dikes.

Provincial officials say flows on the Assiniboine River upstream of Portage La Prairie are now receding with the second crest of this summer’s flood being measured at the Portage Reservoir at a flow of 51,480 cubic feet per second at 3:15 a.m. Tuesday.

The flow into the Portage Reservoir today was measured at 49,090 cfs. The water is being split up with 18,000 cfs going into the river towards Winnipeg and the remainder into the Portage Diversion into Lake Manitoba.

As flows decline, the province plans to gradually reduce the amount of water going into the river by 500 cfs per day. By doing it slowly, officials said the aim is to protect riverbank. Too steep a drop in flow could undermine the banks.

Meanwhile, the flood watch now turns to Lake Manitoba and Lake Winnipeg. Both lakes are above their preferred levels and the combined threat of wind and waves poses a risk to existing dikes and other protection measures.

The province has prepared inundation maps for Lake Manitoba for possible flooding.

 

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