| Impact ID | 4681 |
| Impact Type | Property Value |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Decaying plant material from In times of flooding, dense stands of Japanese knotweed, Fallopia japonica, on the bankside impede flow and may exacerbate flooding, washed into rivers can create blockage and increase the risk of flooding, causing damage to urban flood protection schemes. |
| Reference | 37069 |
| Great Lakes Region | No |
| Cost | |
| Location | UK |
