| Impact ID | 4690 |
| Impact Type | Habitat Alteration |
| Study Type | Experimental |
| Study Location | Field |
| Impact Description | The stand of Japanese knotweed, Polygonum cuspidatum, had a significant impact decreasing stream baseflow and water levels |
| Reference | 37073 |
| Great Lakes Region | No |
| Cost | |
| Location | Third River, Montclair, New Jersey, USA |