| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 156353 | WI | Douglas | St. Louis River estuary | 2001 | 04010201 | St. Louis | established |
| 793058 | WI | Douglas | St Louis River at RM 4.8 | 1976 | 04010201 | St. Louis | established |
| 793072 | WI | Douglas | St Louis River at RM 10 | 1980 | 04010201 | St. Louis | established |
| 793075 | WI | Douglas | St Louis River at RM 3 | 1981 | 04010201 | St. Louis | established |
| 793078 | WI | Douglas | St Louis River at RM 4 | 1982 | 04010201 | St. Louis | established |
| 793089 | WI | Douglas | St Louis River at RM 4 | 1988 | 04010201 | St. Louis | established |
| 793093 | WI | Douglas | St Louis River at RM 4 | 1990 | 04010201 | St. Louis | established |
| 793096 | WI | Douglas | St Louis River at RM 4 | 1990 | 04010201 | St. Louis | established |
| 793079 | WI | Douglas | St Louis River at RM 3.2 | 1982 | 04010201 | St. Louis | established |
| 793095 | WI | Douglas | St Louis River at RM 3.2 | 1990 | 04010201 | St. Louis | established |
| 793086 | WI | Douglas | St Louis River at RM 5 | 1987 | 04010201 | St. Louis | established |
| 793094 | WI | Douglas | St Louis River at RM 5 | 1990 | 04010201 | St. Louis | established |
| 793087 | WI | Douglas | St Louis River at RM 5.7 | 1987 | 04010201 | St. Louis | established |
| 793090 | WI | Douglas | St Louis River at RM 5.7 | 1989 | 04010201 | St. Louis | established |
| 793097 | WI | Douglas | St Louis River at RM 5.7 | 1990 | 04010201 | St. Louis | established |
| 793100 | WI | Douglas | St Louis River at RM 0.1 | 1991 | 04010201 | St. Louis | established |
Citation for this information:
U.S. Geological Survey, 2026,
Alosa pseudoharengus: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 2/12/2026