Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
116485
| MS | Washington | Mississippi River (R.M. 537), at southern point of La Grange revetment at mouth of Lake Ferguson near Greenville, MS | 1992 |
08030100
| Lower Mississippi-Greenville | established |
116447
| MS | Washington | Mississippi River at Mile 537 at Warfield Point Revetment, approx. 100 yards south of the juncture of Lake Ferguson (an active oxbow) and the river. | 1992 |
08030100
| Lower Mississippi-Greenville | established |