| Specimen ID | 116349 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| Country | Canada |
| State | ON |
| Locality | Lake Ontario, at Scarborough, Ontario |
| Mapping Accuracy | Accurate |
| HUC8 Name | Humber River-Frontal Lake Ontario |
| HUC8 Number | 04270104 |
| HUC10 Name | Humber River-Frontal Lake Ontario |
| HUC10 Number | 0427010400 |
| HUC12 Name | Humber River-Frontal Lake Ontario |
| HUC12 Number | 042701040000 |
| Map | |
| Collection Month | 8 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | shipping |
| Status | established |
| Comments | Discontinued settling plate surveys due to lack of success. |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
| Number Collected | 27/m3 |
| Year Class | veliger |
