| Event Category | Disaster |
| Event Group | Natural |
| Event Subgroup | Meteorological - Hydrological |
| Event Type | Flood |
| Place | Southern and Central Ontario |
| Event Start Date | March 13, 1977 |
| Event End Date | March 13, 1977 |
| Comments | Southern and central Ontario, March 13, 1977. Areas along the Saugeen and Maitland Rivers in southwestern Ontario and the city of Sault Ste. Marie that experienced flooding. Many roads were closed along the Saugeen and Maitland Rivers. |
| Fatalities | 0 |
| Injured / Infected | 0 |
| Evacuated | 0 |
| Estimated Total Cost | Unknown |
| Federal DFAA Payments | $0 |
| Provincial DFAA Payments | $0 |
| Provincial Department Payments | Unknown |
| Municipal Costs | Unknown |
| OGD Costs | Unknown |
| Insurance Payments | Unknown |
| NGO Payments | Unknown |
| Utility - People Affected | 0 |
| Magnitude | 0.0 |