| Impact ID | 3538 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Periodic large-scale die-offs littered the beaches of the Great Lakes with rotting fish in the 1960s. Such die-offs caused large-scale beach closures. |
| Reference | 271 |
| Cost | |
| Location | Great Lakes, USA |