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 |
239029
| NE | Brown | Long Pine Creek | 1982 |
10150004
| Middle Niobrara | established |
239028
| NE | Brown | Long Pine Creek | 1983 |
10150004
| Middle Niobrara | established |
239027
| NE | Brown | Long Pine Creek | 1993 |
10150004
| Middle Niobrara | established |
239019
| NE | Brown | Long Pine Creek [~4 mi S of Long Pine] | 1982 |
10150004
| Middle Niobrara | established |
239030
| NE | Brown | Long Pine Creek [~4 mi S of Long Pine] | 1984 |
10150004
| Middle Niobrara | established |
547056
| NE | Brown | Long Pine Creek, Long Pine | 1993 |
10150004
| Middle Niobrara | established |
547061
| NE | Brown | Middle Loup River | 1982 |
10150004
| Middle Niobrara | established |
547062
| NE | Brown | Middle Loup River | 1982 |
10150004
| Middle Niobrara | established |
547067
| NE | Brown | Middle Loup River | 1983 |
10150004
| Middle Niobrara | established |
1420238
| NE | Brown | NA | 2000 |
10150004
| Middle Niobrara | established |
547063
| NE | Brown | Republican River | 1982 |
10150004
| Middle Niobrara | established |
547064
| NE | Brown | Republican River | 1982 |
10150004
| Middle Niobrara | established |
547046
| NE | Brown | Republican River | 1984 |
10150004
| Middle Niobrara | established |
547047
| NE | Brown | Republican River | 1984 |
10150004
| Middle Niobrara | established |
547068
| NE | Brown | Sherman Feeder Canal | 1983 |
10150004
| Middle Niobrara | established |
1419903
| NE | Dawes | NA | 2002 |
10150002
| Niobrara Headwaters | established |
1420084
| NE | Holt | NA | 2000 |
10150007
| Lower Niobrara | established |
1419943
| 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 |