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In 360: Assiniboine rises as Brandon prepares for potential flooding

Posted by Adam in Local Weather, 6/30/2020

The City of Brandon issued a media release on Tuesday afternoon in which it advised of preparations underway for the expected continued rise and potential flooding of the Assiniboine River in light of recent and forecast weather events. 

According to the release the river has experienced a rise of two feet since Sunday to 1170.35 feet above sea level as measured at 1st street. For perspective the city’s dike system is built to nearly 14 feet above that level at 1184 feet. 

The Manitoba Hydrologic Forecast Centre currently predicts a July 6-8 peak at 18th street, as much as nearly nine feet higher than Tuesday’s levels. At that river elevation, the Assiniboine would be at its highest about six feet below the height of the dike. Residents will no doubt monitor those predictions with interest in light of any additional major rain events over at least the next week.

According to this afternoon’s City media release, pumps are in place at areas that may require drainage and there is a preliminary plan should the situation deteriorate to the point of needing to close the opening in the dike system that adjoins 18th Street North to Grand Valley Road. 

You can have a look at what the river looked like from the safety of your screen as of approximately 3pm in between and underneath the twin Thompson 18th street bridges in the interactive 360 degree panorama below by Clicking/tapping and drag or zoom within the image:

Due to unpredictability of the situation the City has asked residents and visitors to stay away from the River and away from the dike system at this time. The entire notice can be read in full at this link.

Brandon itself was on the receiving end of a single-day all-time high of over 150mm (6 inches of rain) on Sunday with many areas of the region upstream also receiving significant precipitation of their own. More rain is forecast on Tuesday evening and potentially into Wednesday. 

The Province of Manitoba had issued a Flood Warning and High Water Advisory on Monday afternoon for Southwest, Western and Central regions for expected overland flooding and flooding along the Assiniboine River. It was said that the river level is expected to remain at below flood protection level.

Updated: June 30, 6pm. Added most recent river forecast


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