Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
275917
| AZ | Coconino | Colorado River near confluence with Little Colorado River | 2003 |
15010001
| Lower Colorado-Marble Canyon | established |
158254
| AZ | Mohave | Lake Mead National Recreation Area | 1999 |
15010005
| Lake Mead | established |
1335110
| AZ | Mohave | Littlefield | 1975 |
15010010
| Lower Virgin | established |
1335109
| AZ | Mohave | Littlefield, Main stream of Virgin River at mouth of Beaver Dam Wash. | 1975 |
15010010
| Lower Virgin | established |
1335122
| AZ | Mohave | Virgin River at Littlefield. | 1973 |
15010010
| Lower Virgin | established |
38760
| NV | Clark | Lake Mead | 1972 |
15010012
| Muddy | established |
159319
| NV | Clark | Lake Mead National Recreation Area | 1999 |
15010005
| Lake Mead | established |
262415
| NV | Clark | Lake Mead, Virgin Basin | 1967 |
15010005
| Lake Mead | unknown |
38757
| NV | Clark | Las Vegas | 1946 |
15010015
| Las Vegas Wash | collected |
38758
| NV | Clark | Moapa (Muddy) River | 1972 |
15010012
| Muddy | collected |
1335146
| NV | Clark | Moapa River as stream crosses road to Pedersen's Warm Spring, Station #2. | 1965 |
15010012
| Muddy | established |