| Impact ID | 7038 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Hydrilla verticillata is not easy to detect until it fills the lake it infests and tops out at the surface; it grows in thick mats, and shades out or outcompetes ecologically important native submersed plants including Potamogeton pondweeds, tapegrass (Vallisneria americana), and coontail (Ceratophyllum demersum). |
| Reference | 10285 |
| Great Lakes Region | No |
| Cost | |
| Location | |
