Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
546468
| NE | Dawes | Niobrara River, at Dunlap Diversion | 1970 |
10150003
| Upper Niobrara | established |
546434
| NE | Garden | North Platte River, 2e Hiway 26 on south side of river | 1970 |
10180014
| Lower North Platte | established |
546431
| NE | Keith | Lake McConaughy, center of lake | 1970 |
10180014
| Lower North Platte | established |
546467
| NE | Sheridan | Niobrara River, south of Gordon | 1970 |
10150003
| Upper Niobrara | established |