| Impact ID | 8747 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | It is estimated that Eurasian watermilfoil (Myriophyllum spicatum) costs Michigan millions of dollars annually in lost tourism revenue. |
| Reference | 35279 |
| Great Lakes Region | Yes |
| Cost | |
| Location | Michigan, USA |
