| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 902919 | NY | Jefferson | Lake Ontario, South Colwell Pond | 2014 | 04140102 | Salmon-Sandy | established |
| 902924 | NY | Oswego | Lake Ontario, Green Point Marina | 2011 | 04140102 | Salmon-Sandy | established |
| 1810199 | NY | Oswego | North Pond | 2011 | 04140102 | Salmon-Sandy | |
| 1815024 | NY | Jefferson | [No locality description provided] | 2014 | 04140102 | Salmon-Sandy | |
| 1844433 | NY | Jefferson | Lakeview Pond | 2021 | 04140102 | Salmon-Sandy | |
| 1844435 | NY | Jefferson | Lakeview Pond | 2021 | 04140102 | Salmon-Sandy | |
| 1853943 | NY | Jefferson | South Colwell Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1853962 | NY | Jefferson | Lakeview Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1853964 | NY | Jefferson | Lakeview Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1853967 | NY | Jefferson | Lakeview Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1853970 | NY | Jefferson | Lakeview Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1853971 | NY | Jefferson | Lakeview Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1854342 | NY | Jefferson | Black Pond | 2022 | 04140102 | Salmon-Sandy | |
| 1854346 | NY | Jefferson | [No locality description provided] | 2022 | 04140102 | Salmon-Sandy | |
| 1854351 | NY | Jefferson | [No locality description provided] | 2022 | 04140102 | Salmon-Sandy | |
| 1854352 | NY | Jefferson | [No locality description provided] | 2022 | 04140102 | Salmon-Sandy | |
| 1854355 | NY | Jefferson | [No locality description provided] | 2022 | 04140102 | Salmon-Sandy | |
| 1860205 | NY | Oswego | [No locality description provided] | 2023 | 04140102 | Salmon-Sandy | |
| 1860202 | NY | Oswego | [No locality description provided] | 2023 | 04140102 | Salmon-Sandy | |
| 1860217 | NY | Oswego | [No locality description provided] | 2023 | 04140102 | Salmon-Sandy | |
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