Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
546483
| NE | Douglas | Big Slough Creek, 1.5e 1.5n Valley | 1972 |
10220003
| Lower Elkhorn | unknown |
1710659
| NE | Douglas | Elkhorn River southeast of Fremont, Nebraska | 1979 |
10220003
| Lower Elkhorn | |
1710660
| NE | Douglas | Elkhorn River southeast of Fremont, Nebraska | 1979 |
10220003
| Lower Elkhorn | |
37760
| NE | Douglas | lower Elkhorn, unnamed tributary | 1973 |
10220003
| Lower Elkhorn | unknown |
546490
| NE | Stanton | Elkhorn River, Hiway 15, Pilger station | 1970 |
10220003
| Lower Elkhorn | unknown |
546486
| NE | Washington | Elkhorn River, upstream of Hiway 30 bridge | 1968 |
10220003
| Lower Elkhorn | unknown |