| Specimen ID | 785843 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | MD |
| County | Cecil |
| Locality | Susquehanna River, mouth, at Perryville |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Susquehanna |
| HUC8 Number | 02050306 |
| HUC10 Name | Susquehanna River |
| HUC10 Number | 0205030617 |
| HUC12 Name | Rock Run-Susquehanna River |
| HUC12 Number | 020503061713 |
| Map | |
| Collection Day | 4 |
| Collection Month | 11 |
| Collection Year | 2013 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft | dispersed |
| Status | established |
| Comments | Found on the anchor of a navigational hazard buoy. |
| Record Type | Personal communication |
| Verifier | Maryland Dept. of Natural Resources |
| Freshwater/Marine | Freshwater |
| Number Collected | 13 |
