It can grow to the surface and form dense mats thick enough for ducks to walk on. It was first found in Lake Norman in 2000 and is spreading rapidly. After an arduous evaluation of the distribution of the hydrila by Duke Power mosquito control teams in Lake Norman, the hydrila is now scattered over approximately 18 square miles of the lake's surface. The Lake Norman Marine Commission and its partners plan to survey the lake in October or early November to determine the magnitude of the hydrila problem.
The Geological Survey reports that the hydrila first appeared in North Carolina in 1980, when it was found on Big Lake, in Raleigh's Umstead Park. Hydrilla was first found in Lake Norman in 2004, but its growth was quickly controlled when a population of sterile herbivorous tents was stored in the affected area. North Carolina has a few species of darts that are worth mentioning, although not all native species can be conserved (some are endangered). In May, after the hydrila was detected again in Lake Norman, 10,200 carps were released in the lake thanks to a partnership between the Lake Norman Marine Commission, Duke Energy, Charlotte Water, and Northern North Carolina also has a large number of smaller sunfish species, such as sunfish with blue spots, the ringed sunfish and the dollar sunfish.