| Specimen ID | 243630 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | rostriformis |
| Subspecies | bugensis |
| Common Name | quagga mussel |
| State | CA |
| County | San Diego |
| Locality | Olivenhain Reservoir [2 mi SW of Escondido] |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Luis Rey-Escondido |
| HUC8 Number | 18070303 |
| HUC10 Name | Escondido Creek |
| HUC10 Number | 1807030304 |
| HUC12 Name | Lower Escondido Creek |
| HUC12 Number | 180703030402 |
| Map | |
| Collection Day | 11 |
| Collection Month | 3 |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Seven days later, 2 more were found at 1-2 mm each. |
| Record Type | NAS sighting report |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Size | 2.5 mm |
