| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1428232 | IL | Lake | Near Waukegan, Lake County, IL | 1956 | 04040002 | Pike-Root | established |
| 1428766 | IL | Cook | Lake Michigan at Chicago just E of Shedd Aquarium | 1957 | 04040002 | Pike-Root | established |
| 1692556 | IL | Lake | Illinois Beach State Park | 1963 | 04040002 | Pike-Root | unknown |
| 1692845 | IL | Cook | Winnetka, Tower Road Beach, S edge of Cooling Pond Wall in Open Water, Lake Michigan drainage | 1970 | 04040002 | Pike-Root | unknown |
| 1899119 | IL | Cook | Lake Michigan, at Chicago, IL | 2016 | 04040002 | Pike-Root | |
| 1899123 | IL | Cook | Lake Michigan, at Chicago, IL | 2016 | 04040002 | Pike-Root | |
| 1899125 | IL | Cook | Lake Michigan, at Chicago, IL | 2016 | 04040002 | Pike-Root | |
| 1899193 | IL | Cook | Lake Michigan, at Chicago, IL | 2017 | 04040002 | Pike-Root | |
| 1899197 | IL | Cook | Lake Michigan, at Chicago, IL | 2017 | 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: 4/10/2026