| Impact ID | 3812 |
| Impact Type | Recreation |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | The dense stands of flowering rush impede recreation, such as swimming and fishing, at Twin Lakes in Minnesota. |
| Reference | 17826 |
| Great Lakes Region | No |
| Cost | $3,000 yearly |
| Location | Twin Lakes, Itasca County, Minnesota |
