| Specimen ID | 259014 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | MD |
| County | Harford |
| Locality | Susquehanna River at Conowingo Dam, Darlington [in Conowingo Village] |
| 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 | 24 |
| Collection Month | 11 |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft | dispersed flood |
| Status | unknown |
| Reference 1 |
| Ref. Number: | 24106 |
| Author: | Pennsylvania Department of Environmental Protection. |
| Date: | 2008 |
| Title: | Zebra Mussel Found on Susquehanna River at Conowingo Dam in Maryland. |
| Publisher: | Pennsylvania Department of Environmental Protection. |
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| Comments | Found alive inside a hydroelectric plant water intake. |
| Record Type | Literature |
| Verifier | Pennsylvania Dept. Env. Protection |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Size | 0.5 in. |
