| Specimen ID | 877663 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | MD |
| County | Baltimore |
| Locality | Dark Head Creek just W of Wilson Point |
| Mapping Accuracy | Accurate |
| HUC8 Name | Gunpowder-Patapsco |
| HUC8 Number | 02060003 |
| HUC10 Name | Back River-Chesapeake Bay |
| HUC10 Number | 0206000307 |
| HUC12 Name | Middle River |
| HUC12 Number | 020600030701 |
| Map | |
| Collection Day | 18 |
| Collection Month | 8 |
| Collection Year | 2015 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | unknown |
| Comments | "Many small (<8mm) zebra mussels encrusted on older barnacles, dark falsemussels, and pebbles. Fisheries biologists noted that mussels were numerous and covering many surfaces of objects captured during trawl sampling of tributary." |
| Record Type | Personal communication |
| Verifier | Ashton, Matt - Maryland DNR |
| Freshwater/Marine | Freshwater |
| Size | <8mm |
