| Impact ID | 3139 |
| Impact Type | Recreation |
| Study Type | Experimental |
| Study Location | Field |
| Impact Description | Grass Carp (Ctenopharyngodon idella) introductions resulted in a decrease of aquatic macrophytes (Potamogeton, Elodea, Ceratophyllum, and Najas), all controlled effectively by Ctenopharyngodon idella. The reduction of submerged macrophytes increased opportunities for angling and in turn increasing angling activity. |
| Reference | 26788 |
| Great Lakes Region | No |
| Cost | |
| Location | Red Haw Lake, Iowa |
