| Impact ID | 7617 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Thick mats of Salvinia molesta serve as a major obstacle to paddle-powered canoes. As a result, transport by water and recreational fishing can be severely impeded or halted. |
| Reference | 28408 |
| Great Lakes Region | No |
| Cost | |
| Location | |
