| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 877258 | MI | Ottawa | | 2015 | 04050006 | Lower Grand | established |
| 877173 | MI | Kent | | 2007 | 04050006 | Lower Grand | established |
| 877252 | MI | Montcalm | | 2015 | 04050006 | Lower Grand | established |
| 877180 | MI | Montcalm | | 2007 | 04050006 | Lower Grand | established |
| 1551649 | MI | Kent | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551650 | MI | Kent | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551651 | MI | Montcalm | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551654 | MI | Montcalm | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551655 | MI | Montcalm | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551657 | MI | Montcalm | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551658 | MI | Montcalm | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1551659 | MI | Montcalm | [No locality description provided] | 2007 | 04050006 | Lower Grand | established |
| 1556608 | MI | Ottawa | [No locality description provided] | 2013 | 04050006 | Lower Grand | established |
| 1595814 | MI | Ottawa | [No locality description provided] | 2011 | 04050006 | Lower 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