| Impact ID | 4638 |
| Impact Type | Human Health |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | It is suspected that dense beds Trapa natans played a role in the drowning deaths in the Hudson River in 2001 by entangling swimmers. |
| Reference | 27644 |
| Cost | |
| Location | Hudson River, Poughkeepsie, NY, USA |