| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
40565
| OR | Columbia | Columbia River, lower | 1946 |
17080003
| Lower Columbia-Clatskanie | established |
|
46060
| WA | | Columbia River, lower | 1946 |
17080003
| Lower Columbia-Clatskanie | established |
|
46996
| WY | | Horse Creek (Reservoir?) | 1946 |
10090208
| Little Powder | established |
|
46973
| WY | Fremont | Burlington Reservoir (Ditch) | 1946 |
10080006
| Badwater | established |
|
46979
| WY | Fremont | Pilot Butte Reservoir | 1946 |
10080005
| Lower Wind | established |
|
46961
| WY | Fremont | Ray Lake | 1946 |
10080002
| Little Wind | established |
|
46918
| WY | Natrona | Beulah Belle Lake | 1946 |
10180006
| Sweetwater | established |
|
46907
| WY | Park | Beck Lake | 1946 |
10080014
| Shoshone | established |
|
46967
| WY | Park | Deaver Reservoir | 1946 |
10080014
| Shoshone | established |
|
46982
| WY | Platte | Guernsey Reservoir on the North Platte | 1946 |
10180008
| Glendo Reservoir | established |