| Specimen ID | 116083 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | NY |
| County | Niagara |
| Locality | Lake Ontario, Somerset generating station |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lake Ontario |
| HUC8 Number | 04280002 |
| HUC10 Name | Lake Ontario |
| HUC10 Number | 0428000202 |
| HUC12 Name | Lake Ontario |
| HUC12 Number | 042800020200 |
| Map | |
| Collection Month | 7 |
| Collection Year | 1990 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Comments | veligers since mid-July (peaked at 16588/cu.yd.); attached mussels since mid-August. Found Zebra mussel shells in Spring of 1990, presumably entering the system in 1989. |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
