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Southern Ontario Flooding 2017. Submit a Job Posting RFQ or RFP. The main cause of the exceptional 2017 spring flooding can be described easily in just a few words. The finding is that there is no prevailing increase in extreme rainfall intensities in southern Ontario and that generalized safety factors in design say 20 buffer can accommodate the effect of recent extreme. Saturday June 24 2017 823 AM - People across southern Ontario are once again cleaning up after strong storms pounded the region late Thursday into early Friday.
On July 8 2013 Southern Ontario experienced a flash flood with 10 cm 4 of rain falling over Toronto in just two hours. A massive storm stretching from New Brunswick to Louisiana brought heavy rain to parts of Ontario Saturday leading to flooding and freezing rain in some areas. Unusually heavy rainfall coinciding with melting snow that had already saturated the ground and swollen waterways generated exceptional volumes of water in the Ottawa River basin. The finding is that there is no prevailing increase in extreme rainfall intensities in southern Ontario and that generalized safety factors in design say 20 buffer can accommodate the effect of recent extreme. More than 13 inches of rain has fallen on Montreal an island city surrounded by. The potential for Lake Ontario water exacerbating the Quebec flood echoes 2017 when officials struggled to balance flooding on the lake with flooding downstream.
Watershed flooding was at its maximum capacity in the reservoir lakes of the Trent Severn Waterway only to be hit with 129 millimeters of rain in late April increasing flood levels.
Extreme rainfall event affecting eastern Canada. Flooding in multiple communities in southern Ontario and Quebec in April and into May is estimated to cost well into the millions of dollars USD in economic losses. 2013 Southern Ontario Flash Flood. In the spring of 2017 record flooding likely the most extraordinary conditions to ever occur according to a 2018 report by the International Lake Ontario-St. Raccoon stuck on the tree due to local flooding in Southern Ontario. After record breaking rainfall in the first week of May water levels have been on the rise causing flooding all across southern Ontario.