| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 39600 | NY | Hamilton | Fulton Chain Lakes (Adirondacks) | 1980 | 04140301 | Black | established |
| 39598 | NY | Herkimer | Fulton Chain Lakes (Adirondacks) | 1980 | 04140301 | Black | established |
| 875630 | NY | Herkimer | Forth Chain Lake at sampling station F15G | 1994 | 04140301 | Black | established |
| 875620 | NY | Herkimer | Forth Chain Lake at sampling station F14G | 1994 | 04140301 | Black | established |
| 875655 | NY | Herkimer | Forth Chain Lake at sampling station F17G | 1994 | 04140301 | Black | established |
| 875643 | NY | Herkimer | Forth Chain Lake at sampling station F17G | 1994 | 04140301 | Black | established |
| 875649 | NY | Herkimer | Forth Chain Lake at sampling station F12G | 1994 | 04140301 | Black | established |
| 875679 | NY | Herkimer | Forth Chain Lake at sampling station F20G | 1994 | 04140301 | Black | established |
Citation for this information:
U.S. Geological Survey, 2026,
Osmerus mordax: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 6/4/2026