| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1567724 | MI | Bay | [No locality description provided] | 2016 | 04080103 | Pigeon-Wiscoggin | established |
| 1567727 | MI | Bay | [No locality description provided] | 2016 | 04080103 | Pigeon-Wiscoggin | established |
| 1567733 | MI | Bay | [No locality description provided] | 2016 | 04080103 | Pigeon-Wiscoggin | established |
| 1567738 | MI | Bay | [No locality description provided] | 2016 | 04080103 | Pigeon-Wiscoggin | established |
| 1567729 | MI | Bay | [No locality description provided] | 2016 | 04080103 | Pigeon-Wiscoggin | established |
| 1604516 | MI | Bay | [No locality description provided] | 2015 | 04080103 | Pigeon-Wiscoggin | established |
| 1567723 | MI | Bay | [No locality description provided] | 2016 | 04080103 | Pigeon-Wiscoggin | established |
Citation for this information:
U.S. Geological Survey, 2025,
Butomus umbellatus: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/18/2025