| Impact ID | 3411 |
| Impact Type | Infrastructure |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | "Submersed plants form tight, mounded colonies in water as deep as 2 meters, but eventually grow to reach the surface of the water, where they form dense mats that block light penetration and impede water flow in canals" |
| Reference | 33956 |
| Great Lakes Region | No |
| Cost | |
| Location | |
