Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
37484
| NE | Cherry | Cherry County (lakes near Valentine N.W.R.?) | 1974 |
10150004
| Middle Niobrara | established |
546442
| NE | Cherry | Snake River, Below Kime place | 1997 |
10150005
| Snake | established |
546468
| NE | Dawes | Niobrara River, at Dunlap Diversion | 1970 |
10150003
| Upper Niobrara | established |
546467
| NE | Sheridan | Niobrara River, south of Gordon | 1970 |
10150003
| Upper Niobrara | established |
37490
| NE | Sheridan | Walgren Lake and vicinity, ca 6 mil se of Hay Springs, a disconnected sand hill lake | 1974 |
10150003
| Upper Niobrara | established |