| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 877162 | MI | Clinton | | 2007 | 04050004 | Upper Grand | established |
| 877169 | MI | Ingham | | 2012 | 04050004 | Upper Grand | established |
| 1551647 | MI | Clinton | [No locality description provided] | 2007 | 04050004 | Upper Grand | established |
| 1562375 | MI | Ingham | [No locality description provided] | 2014 | 04050004 | Upper Grand | established |
| 1562480 | MI | Shiawassee | [No locality description provided] | 2014 | 04050004 | Upper Grand | established |
| 1562489 | MI | Clinton | [No locality description provided] | 2014 | 04050004 | Upper Grand | established |
| 1567473 | MI | Ingham | [No locality description provided] | 2016 | 04050004 | Upper Grand | established |
| 1567627 | MI | Ionia | [No locality description provided] | 2016 | 04050004 | Upper Grand | established |
| 1567631 | MI | Ionia | [No locality description provided] | 2016 | 04050004 | Upper Grand | established |
| 1611351 | MI | Ingham | [No locality description provided] | 2018 | 04050004 | Upper Grand | established |
| 1567632 | MI | Ionia | [No locality description provided] | 2016 | 04050004 | Upper Grand | established |
| 1567633 | MI | Ionia | [No locality description provided] | 2016 | 04050004 | Upper Grand | established |
| 1599796 | MI | Ingham | [No locality description provided] | 2012 | 04050004 | Upper Grand | established |
Citation for this information:
U.S. Geological Survey, 2025,
Phalaris arundinacea: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/17/2025