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The 2011 Assiniboine River flood was caused by above average precipitation in Western Manitoba and Saskatchewan. This was a 1 in 300 year flood that affected much of Western Manitoba. The flooding in Manitoba was expected to mostly involve the 2011 Red River Flood but instead the more severe flooding was found on the Assiniboine in the west.
The 2011 Souris/Mouse River flood in Canada and the United States occurred in June and was greater than a hundred-year flooding event for the river. [ 1 ] [ 2 ] The US Army Corps of Engineers estimated the flood to have a recurrence interval of two to five centuries.
The 2011 Red River flood took place along the Red River of the North in Manitoba in Canada and North Dakota and Minnesota in the United States beginning in April 2011. The flood was, in part, due to high moisture levels in the soil from the previous year, which meant that further accumulation would threaten the flood-prone region.
The flooding occurred due to record snowfall in the area followed by its snowmelt and in combination with intense spring rains. [2] Lake Champlain stayed at flood stage for 67 days from April to June, and on May 10, 2011, the lake broke its previous flood level set in 1869 by reaching 102.8 ft. at Rouses Point, New York.
The 2011 Assiniboine River flood is a major flood in May 2011 along the Assiniboine River south of Portage la Prairie in Manitoba. The flood is expected in impact an 225 km/s (140 mi/s) area along the River south of Portage la Prairie. About 100 Canadian Forces personnel were in the region helping out in controlling the flooding. [52]
The 2011 Manitoba floods may refer to: 2011 Red River flood; 2011 Assiniboine River flood; 2011 Souris River flood; See also. 2011 Mississippi River floods
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After the 1997 flood, a 2004 re-assessment of the floodway and its channel capacity indicated that 2,500 m 3 /s (90,000 cu ft/s) could be passed through the floodway during a major flood, but this is considered above the design capacity as it would submerge bridges, and the decision was made to further expand the floodway.