| 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 |
|
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 |