| Specimen ID | 238682 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | PA |
| County | Tioga |
| Locality | Cowanesque Lake (West Launch/South Shore Recreation Area) [just west of Lawrenceville] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Tioga |
| HUC8 Number | 02050104 |
| HUC10 Name | Cowanesque River |
| HUC10 Number | 0205010408 |
| HUC12 Name | Lower Cowanesque River |
| HUC12 Number | 020501040809 |
| Map | |
| Collection Day | 17 |
| Collection Month | 5 |
| Collection Year | 2007 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Many found under the boat dock only; no more found after a brief search of the immediate area; population may be several years old. |
| Record Type | Personal communication |
| Verifier | Dr. Ed Mastellar, (retired) Penn State Univ. |
| Freshwater/Marine | Freshwater |
| Size | 1.5 in. |
