| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 263510 | PA | Erie | Presque Isle Bay, East and West Canal bays | 2009 | 04260000 | Lake Erie | established |
| 887778 | PA | Erie | Presque Isle Bay, Erie | 2012 | 04260000 | Lake Erie | established |
| 1333429 | PA | Erie | Presque Isle Lagoons | 2015 | 04260000 | Lake Erie | established |
| 1669690 | PA | Erie | Presque Isle State Park, Marina Lake | 2018 | 04260000 | Lake Erie | unknown |
| 1669696 | PA | Erie | Lake Erie, boat Launch across from Erie Water Works | 2018 | 04260000 | Lake Erie | unknown |
| 1669706 | PA | Erie | Presque Isle State Park, Grave Yard Pond | 2018 | 04260000 | Lake Erie | unknown |
| 1669726 | PA | Erie | Presque Isle State Park, Grave Yard Pond | 2018 | 04260000 | Lake Erie | unknown |
| 1843901 | PA | Erie | Lake Erie,Lake Erie (ERIE) | 2021 | 04260000 | Lake Erie | |
| 1820948 | PA | Erie | Lake Erie,Lake Erie (ERIE) | 2015 | 04260000 | Lake Erie | |
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