| Impact ID | 8746 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Long stems from Myriophyllum spicatum (Eurasian watermilfoil) can get tangled around boat propellers and may cause damage. |
| Reference | 35276 |
| Great Lakes Region | No |
| Cost | |
| Location | |
