| Specimen ID | 1657566 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | rostriformis |
| Subspecies | bugensis |
| Common Name | quagga mussel |
| State | CA |
| County | Riverside |
| Locality | Santa Margarita River |
| Mapping Accuracy | Accurate |
| HUC8 Name | Santa Margarita |
| HUC8 Number | 18070302 |
| HUC10 Name | Santa Margarita River |
| HUC10 Number | 1807030205 |
| HUC12 Name | Rainbow Creek-Santa Margarita River |
| HUC12 Number | 180703020503 |
| Map
NAS ARM
| |
| Collection Day | 19 |
| Collection Month | 5 |
| Collection Year | 2021 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed |
| Status | established |
| Comments | Identity confirmed with PCR analysis. More were seen but not collected. |
| Record Type | NAS sighting report |
| Verifier | Rancho California Water District |
| Freshwater/Marine | Freshwater |
| Number Collected | 4 |
| Photo | |
