| Impact ID | 6388 |
| Impact Type | Habitat Alteration |
| Study Type | Anecdotal |
| Study Location | Field |
| Impact Description | Trapa natans get dense enough and have thorns resulting in fish having difficulty swimming through the roots. |
| Reference | 41886 |
| Great Lakes Region | No |
| Cost | |
| Location | Oswegatchie River, New York |
