| Specimen ID | 242998 |
| Group | Crustaceans-Amphipods |
| Genus | Crangonyx |
| Species | pseudogracilis |
| Common Name | northern river crangonyctid |
| State | OR |
| County | Multnomah |
| Locality | Columbia Slough, Incendiary Bridge |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Willamette |
| HUC8 Number | 17090012 |
| HUC10 Name | Columbia Slough-Willamette River |
| HUC10 Number | 1709001202 |
| HUC12 Name | Columbia Slough |
| HUC12 Number | 170900120201 |
| Map | |
| Collection Day | 16 |
| Collection Month | 4 |
| Collection Year | 2002 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
