| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 902913 | MI | Barry | Upper Crooked Lake | 2013 | 04050003 | Kalamazoo | established |
| 1321791 | MI | Barry | Crooked Lake, between N Crooked Lake Dr and S Oak Dr | 2016 | 04050003 | Kalamazoo | established |
| 1321795 | MI | Barry | Gunn [Gun] Lake | 2015 | 04050003 | Kalamazoo | established |
| 1321796 | MI | Kalamazoo | Gull Lake | 2015 | 04050003 | Kalamazoo | established |
| 1561133 | MI | Jackson | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1561908 | MI | Kalamazoo | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1561279 | MI | Calhoun | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1561898 | MI | Calhoun | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1561998 | MI | Barry | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1561999 | MI | Barry | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1562001 | MI | Barry | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1562039 | MI | Allegan | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1562196 | MI | Barry | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1562204 | MI | Barry | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1562173 | MI | Barry | [No locality description provided] | 2014 | 04050003 | Kalamazoo | established |
| 1669819 | MI | Calhoun | Goguac Lake | 2018 | 04050003 | Kalamazoo | unknown |
| 1669832 | MI | Allegan | Green Lake | 2018 | 04050003 | Kalamazoo | unknown |
| 1669841 | MI | Jackson | Round Lake | 2018 | 04050003 | Kalamazoo | unknown |
| 1669842 | MI | Allegan | Miner Lake | 2018 | 04050003 | Kalamazoo | unknown |
| 1669855 | MI | Barry | Gull Lake | 2018 | 04050003 | Kalamazoo | unknown |
| 1691778 | MI | Allegan | Green Lake | 2020 | 04050003 | Kalamazoo | established |
| 1691807 | MI | Barry | Crooked Lake | 2020 | 04050003 | Kalamazoo | established |
| 1691957 | MI | Jackson | Farewell Lake | 2021 | 04050003 | Kalamazoo | unknown |
| 1607290 | MI | Allegan | [No locality description provided] | 2017 | 04050003 | Kalamazoo | established |
Citation for this information:
U.S. Geological Survey, 2025,
Nitellopsis obtusa: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/4/2025