Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
37423
| NE | Box Butte | just south of Niobrara River | 1974 |
10150003
| Upper Niobrara | established |
547005
| NE | Dawes | Niobrara River, at Dunlap Diversion | 1970 |
10150003
| Upper Niobrara | established |
546955
| NE | Sheridan | Frenchman River | 1989 |
10150003
| Upper Niobrara | established |
546956
| NE | Sheridan | Middle Loup River | 1989 |
10150003
| Upper Niobrara | established |
546883
| NE | Sheridan | Middle Loup River | 1992 |
10150003
| Upper Niobrara | established |
546917
| NE | Sheridan | Pine Creek, 16s Rushville | 1973 |
10150003
| Upper Niobrara | established |
546946
| NE | Sheridan | Republican River | 1995 |
10150003
| Upper Niobrara | established |