July 30, 2015


Assiniboine Basin - DO NOT TARGET

Assiniboine up 10 cm today in Brandon

BRANDON - The Assiniboine River in Brandon is about 10 cm higher this morning compared to yesterday, according to the city's automated measurements.

The level is at 355.79 metres above sea level, as measured at the First Street bridge. Yesterday's level hovered around 355.69 metres.

A slight rise in the Assiniboine doesn't mean that flooding is imminent -- but it is coming.

BRANDON SUN

A slight rise in the Assiniboine doesn't mean that flooding is imminent -- but it is coming.

It will take a little bit more than that for flooding to begin. The city says that low-lying levels of riverside parks begin to be affected by floodwaters when the river rises past about 357 metres, and the official flood stage is at 357.23 metres.

Water stewardship predicted on Wednesday that the Assiniboine River would peak later this month -- sometime between April 19 and 28 -- at a level that could be anywhere from 358.90 metres to 359.66 metres. That is lower than the worst-case flood scenario forecast earlier this year.

However, the higher end of that estimate would mean this year's Assiniboine flood could still equal the highest level ever recorded in Brandon, from 1923.

Flood photos from floods in the 1920s show extensive flooding near the Eighth Street Bridge, but city dikes are expected to hold back Assiniboine waters this year. The new dikes have been built up to a level of 360.94 metres.

Only the great flood of 1882 -- before measurements began -- is thought to have been higher. Some estimates put flooding that year at about 361.34 metres.

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