| Specimen ID | 259818 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | MD |
| County | Harford |
| Locality | Susquehanna River, just upstream of Conowingo Dam Glen Cove Marina |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Susquehanna |
| HUC8 Number | 02050306 |
| HUC10 Name | Susquehanna River |
| HUC10 Number | 0205030617 |
| HUC12 Name | Conowingo Dam-Susquehanna River |
| HUC12 Number | 020503061712 |
| Map | |
| Collection Day | 25 |
| Collection Month | 11 |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft | dispersed |
| Status | unknown |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Size | 2.2 cm |
