Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1544350
| WA | King | Green River, Howard Hanson Reservoir, at Cedar Swamp | 2009 |
17110013
| Duwamish | established |
1543354
| WA | King | Green River, Howard Hanson Reservoir, at Maintenance Ramp | 2009 |
17110013
| Duwamish | established |
1544559
| WA | King | Sawyer Lake, at N/A | 2018 |
17110013
| Duwamish | established |
1544254
| WA | King | Sawyer Lake, at Regional Park Northwest | 2018 |
17110013
| Duwamish | established |
1544299
| WA | King | Sawyer Lake, at Regional Park Northwest | 2018 |
17110013
| Duwamish | established |