| Specimen ID# | State | County | Locality | Year | HUC Number | Drainage Name | Status |
|---|
| 4623 | CA | | San Francisco Bay | 1954 | 18050004 | San Francisco Bay | established |
| 4624 | CA | Marin | Tomales Bay (just north of San Francisco) | 1969 | 18050005 | Tomales-Drake Bays | established |
| 4625 | CA | Marin | Bolinas Lagoon (near Bolinas) | 1971 | 18050005 | Tomales-Drake Bays | established |
| 4628 | CA | | Suisun Bay [border between Solano and Contra Costa Countiess, CA] | 1986 | 18050001 | Suisun Bay | established |
| 4629 | CA | Contra Costa | San Joaquin River at Antioch, CA | 1986 | 18040003 | San Joaquin Delta | established |
| 4627 | CA | Marin | San Francisco Bay western part of central bay | 1986 | 18050002 | San Pablo Bay | established |
| 4626 | CA | | Carquinez Strait [between San Pablo and Suisun bays] | 1995 | 18050001 | Suisun Bay | established |