| Impact ID | 7063 |
| Impact Type | Recreation |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Large Hydrilla verticillata mats prevent access to many of the prime locations used for waterfowl hunting and most warmwater sport fishing. Low oxygen levels in these mats make them unsuitable for the growth and survival of sport fishes and most other aquatic animals. Heavy hydrilla infestations (those that cover more than 25 to 30 percent of the surface in large lakes and impoundments) eliminate fish habitat, cause stunting, and reduce the number of harvestable fish. |
| Reference | 5137 |
| Cost | |
| Location | North Carolina |