| Specimen ID | 879704 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | MD |
| County | Cecil |
| Locality | Elk River near mouth of Pearce Creek |
| Mapping Accuracy | Accurate |
| HUC8 Name | Chester-Sassafras |
| HUC8 Number | 02060002 |
| HUC10 Name | Elk River |
| HUC10 Number | 0206000202 |
| HUC12 Name | Lower Elk River |
| HUC12 Number | 020600020207 |
| Map | |
| Collection Day | 17 |
| Collection Month | 9 |
| Collection Year | 2015 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | found on floating submerged aquatic vegetation |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater-Brackish |
