| Event Category | Disaster |
| Event Group | Natural |
| Event Subgroup | Meteorological - Hydrological |
| Event Type | Flood |
| Place | Cambridge/Waterloo Region ON |
| Event Start Date | May 17, 1974 |
| Event End Date | May 21, 1974 |
| Comments | Grand River, Cambridge ON, May 17-21, 1974. Many roads and businesses were closed in Cambridge; some small dams (one on the Grand River and two on the Maitland River) were damaged and utility services were disrupted in some areas. |
| 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 |