| Impact ID | 6394 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | There was a $300,000 campaign to eradicate Myriophyllum spicatum to prevent clogging of the lake surface which would decrease recreation. According to the Iowa Great Lakes Association, visitors spend hundreds of millions of dollars each year in the region. |
| Reference | 41887 |
| Cost | |
| Location | Great Lakes region in northwest Iowa |