| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 793004 | WI | Racine | Root River at RM 3.4 | 1971 | 04040002 | Pike-Root | established |
| 793052 | WI | Kenosha | Pike River at RM 4.5 | 1975 | 04040002 | Pike-Root | established |
| 793066 | WI | Racine | Root River at RM 2.1 | 1979 | 04040002 | Pike-Root | established |
| 793091 | WI | Kenosha | Pike River at RM 2.6 | 1990 | 04040002 | Pike-Root | established |
| 1899688 | WI | Milwaukee | Lake Michigan, at Milwaukee, WI | 2016 | 04040002 | Pike-Root | |
| 1899695 | WI | Milwaukee | Lake Michigan, at Milwaukee, WI | 2016 | 04040002 | Pike-Root | |
| 1900215 | WI | Milwaukee | Lake Michigan, at Milwaukee, WI | 2015 | 04040002 | Pike-Root | |
| 1900255 | WI | Milwaukee | Lake Michigan, at Milwaukee, WI | 2017 | 04040002 | Pike-Root | |
| 1900952 | WI | Milwaukee | Lake Michigan, at Milwaukee, WI | 2019 | 04040002 | Pike-Root | |
| 1901646 | WI | Milwaukee | Lake Michigan, at Milwaukee, WI | 2015 | 04040002 | Pike-Root | |
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: 4/11/2026