| Specimen ID | 1336021 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | bugensis |
| Common Name | quagga mussel |
| State | CA |
| County | Los Angeles |
| Locality | Pyramid Lake near the dam, approximately 250 feet deep on the intake structure to the Angeles Tunnel |
| Mapping Accuracy | Accurate |
| HUC8 Name | Santa Clara |
| HUC8 Number | 18070102 |
| HUC10 Name | Upper Piru Creek |
| HUC10 Number | 1807010205 |
| HUC12 Name | Liebre Gulch-Piru Creek |
| HUC12 Number | 180701020509 |
| Map | |
| Collection Day | 20 |
| Collection Month | 12 |
| Collection Year | 2016 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft | dispersed |
| Status | unknown |
| Comments | One adult mussel was observed on the intake structure to the Angeles Tunnel. The observation was made via ROV video. |
| Record Type | NAS sighting report |
| Verifier | California Department of Water Resources |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Year Class | adult |
