Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
239023
| NE | Antelope | Dikeman's ponds [N of Royal] | 1939 |
10150007
| Lower Niobrara | established |
547045
| NE | Antelope | Dikeman's ponds, 1n 1e Royal | 1939 |
10150007
| Lower Niobrara | established |
239020
| NE | Antelope | East Branch Verdigre Creek | 1985 |
10150007
| Lower Niobrara | established |
547048
| NE | Antelope | Republican River | 1985 |
10150007
| Lower Niobrara | established |
1419943
| NE | Holt | NA | 2000 |
10150007
| Lower Niobrara | established |
1420084
| NE | Holt | NA | 2000 |
10150007
| Lower Niobrara | established |
239032
| NE | Holt | Niobrara River Slough [~3 mi SW of Bristow] | 1930 |
10150007
| Lower Niobrara | established |
547060
| NE | Holt | Niobrara River slough, side channel slough 1se Spencer Dam | 1930 |
10150007
| Lower Niobrara | established |