| Specimen ID | 246412 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | rostriformis |
| Subspecies | bugensis |
| Common Name | quagga mussel |
| State | CA |
| County | Orange |
| Locality | Irvine Lake [in Silverado] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Santa Ana |
| HUC8 Number | 18070203 |
| HUC10 Name | Santiago Creek |
| HUC10 Number | 1807020309 |
| HUC12 Name | Lower Santiago Creek |
| HUC12 Number | 180702030902 |
| Map | |
| Collection Day | 1 |
| Collection Month | 4 |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Comments | Veligers detected by cross polarization microscopy. |
| Record Type | NAS sighting report |
| Verifier | Scripps Inst. of Oceanography |
| Freshwater/Marine | Freshwater |
| Year Class | veliger |
