| Impact ID | 4680 |
| Impact Type | Navigation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | In times of flooding, dense stands of Japanese knotweed, Fallopia japonica, on the bankside impede flow and may exacerbate flooding |
| Reference | 37069 |
| Great Lakes Region | No |
| Cost | |
| Location | UK |
