| Specimen ID | 1932886 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | rostriformis |
| Subspecies | bugensis |
| Common Name | quagga mussel |
| State | OR |
| County | Crook |
| Locality | Prineville Reservoir |
| Mapping Accuracy | Approximate |
| HUC8 Name | Upper Crooked |
| HUC8 Number | 17070304 |
| Map | |
| Collection Day | 6 |
| Collection Month | 6 |
| Collection Year | 2026 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | failed |
| Comments | Only the single quagga mussel was found. Additional intensive surveys by Portland State University (PSU) Center for Lakes and Reservoirs did not find any other mussels along the shoreline at Prineville Reservoir. Test results from water samples and environmental DNA (eDNA) tests by PSU also showed no sign of invasive mussels. |
| Record Type | Personal communication |
| Verifier | Portland State University & Oregon Department of Fish and Wildlife |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
