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It came close to overwhelming Winnipeg's existing flood protection system. [10] At the time, the Winnipeg Floodway was designed to protect against a flow of 60,000 cu ft/s (1,700 m 3 /s), but the 1997 flow was 63,000 cu ft/s (1,800 m 3 /s). To compensate, the province broke operational rules for the Floodway, as defined in legislation, during ...
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Even with these flood protection measures, in 1997 the province had a flood cresting at 21.6 ft (6.6 m). It caused 28,000 people to be evacuated and $500 million CAD in damage to property and infrastructure. [15] [16] The 1997 flood was a 100-year flood. It came close to overwhelming Winnipeg's existing flood protection system. [17]
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This helps prevent flooding on the Assiniboine down river from the diversion, including in Winnipeg, where the Assiniboine River meets the Red River. During flood years such as the 2011 Assiniboine River flood, inlet flows to the Portage Diversion control structure were measured at over 54,000 cu ft/s (1,500 m 3 /s). This amount of water would ...
The Red River floods refer to the various flooding events in recent history of the Red River of the North, which forms the border between North Dakota and Minnesota and flows north, into Manitoba. Around 16% of the Red River basin , excluding the Assiniboine basin, is located in Canada; the remainder is within The Dakotas and Minnesota.
A flood warning is closely linked to the task of flood forecasting.The distinction between the two is that the outcome of flood forecasting is a set of forecast time-profiles of channel flows or river levels at various locations, while "flood warning" is the task of making use of these forecasts to make decisions about whether warnings of floods should be issued to the general public or ...
The 2009 Red River flood along the Red River of the North in North Dakota and Minnesota in the United States and Manitoba in Canada brought record flood levels to the Fargo-Moorhead area. The flood was a result of saturated and frozen ground, spring snowmelt exacerbated by additional rain and snow storms, and virtually flat terrain.