| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 274857 | MI | Midland | Sanford Lake | 2007 | 04080201 | Tittabawassee | established |
| 1563245 | MI | Midland | [No locality description provided] | 2014 | 04080201 | Tittabawassee | established |
| 1563886 | MI | Gladwin | [No locality description provided] | 2014 | 04080201 | Tittabawassee | established |
| 1607755 | MI | Gladwin | [Lake Lancer] [No locality description provided] | 2017 | 04080201 | Tittabawassee | established |
| 1611640 | MI | Gladwin | [No locality description provided] | 2018 | 04080201 | Tittabawassee | established |
| 1669869 | MI | Midland | Sanford Lake | 2018 | 04080201 | Tittabawassee | unknown |
| 1691899 | MI | Gladwin | Secord Lake | 2018 | 04080201 | Tittabawassee | unknown |
| 1691906 | MI | Gladwin | Wixom Lake | 2018 | 04080201 | Tittabawassee | unknown |
| 1611663 | MI | Gladwin | [No locality description provided] | 2018 | 04080201 | Tittabawassee | 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