| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
252812
| CA | San Luis Obispo | Morro Bay (just NW of San Luis Obispo) | 2000 |
18060006
| Central Coastal | established |
|
252808
| CA | Sonoma | Bodega Bay Harbor | 2000 |
18050005
| Tomales-Drake Bays | established |
|
252633
| RI | Newport | Naragansett Bay at Fort Wetherill in Jamestown | 2000 |
01090004
| Narragansett | established |
|
252767
| WA | Mason | Totten Inlet [Puget Sound] at Steamboat Island [~8 mi N of Olympia]. | 2000 |
17110019
| Puget Sound | established |
|
252737
| WA | Thurston | Totten Inlet, Gallagher Cove, Taylor Shellfish Rafts. | 2000 |
17110019
| Puget Sound | established |