| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1653818 | NY | Onondaga | Old Erie Canal State Park | 2019 | 04140202 | Oneida | established |
| 1677379 | NY | Onondaga | [No locality description provided] | 2021 | 04140202 | Oneida | |
| 1815252 | NY | Onondaga | [No locality description provided] | 2014 | 04140202 | Oneida | |
| 1848452 | NY | Onondaga | [No locality description provided] | 2022 | 04140202 | Oneida | |
| 1848453 | NY | Onondaga | [No locality description provided] | 2022 | 04140202 | Oneida | |
| 1856204 | NY | Onondaga | [No locality description provided] | 2023 | 04140202 | Oneida | |
| 1877404 | NY | Onondaga | 2.6 air km west-southwest of Round Lake, west of Route 257 | 2017 | 04140202 | Oneida | |
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: 12/17/2025