| Event Category | Disaster |
| Event Group | Natural |
| Event Subgroup | Meteorological - Hydrological |
| Event Type | Storm - Unspecified / Other |
| Place | Eastern Ontario, Western Quebec |
| Event Start Date | October 28, 2017 |
| Event End Date | October 30, 2017 |
| Comments | A few weather systems combined to create a significant low pressure system that moved over eastern Ontario as well as western and southern Quebec. From 3:00pm on October 28th to 1:00pm on October 30th, 112.5 mm of rain fell over Ottawa. As a result, there was significant pluvial/urban flooding within Ottawa and road washouts in western Quebec. Insurable losses were estimated to be $99.8 million (2017 CAD). |
| Fatalities | 0 |
| Injured / Infected | 0 |
| Evacuated | 0 |
| Estimated Total Cost | Unknown |
| Federal DFAA Payments | Unknown |
| Provincial DFAA Payments | Unknown |
| Provincial Department Payments | Unknown |
| Municipal Costs | Unknown |
| OGD Costs | Unknown |
| Insurance Payments | $99,847,000 |
| NGO Payments | Unknown |
| Utility - People Affected | Unknown |
| Magnitude | Unknown |