| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
35012
| MA | Middlesex | Charles River Boston/Cambridge, just up river of the Newell Boat House | 1991 |
01090001
| Charles | established |
|
34928
| MA | Middlesex-Suffolk | Charles River, Cambridge/Boston | 1991 |
01090001
| Charles | established |
|
34974
| MA | Norfolk-Suffolk | Charles River, Boston/Cambridge at Newall Boat House | 1991 |
01090001
| Charles | established |
|
34975
| MA | Norfolk-Suffolk | Charles River, Boston/Cambridge at Newall Boat House | 1991 |
01090001
| Charles | established |