| Impact ID | 3511 |
| Impact Type | Recreation |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Dense mats of Pontederia crassipes can reduce flow in irrigation channels, interfere with watercraft navigation, and clog hydroelectric power generation. |
| Reference | 34001 |
| Cost | $1,000,000 in the Congo River |
| Location | |