Hydrilla Verticillata Links

Hydrilla Links

Hydrilla is considered the most problematic aquatic plant in the United States.

Hydrilla is a submersed plant. 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

At a recent meeting of the Catawba River Study group, Duke Power Company's Ken Manuel noted the presence of a 350-acre hydrilla bed in Lake James. The nonnative aquatic weed was first observed in 1999 and Duke responded by lowering the lake level that winter to freeze the then exposed weed bed followed by spraying with an aquatic herbicide. Both efforts failed and the infestation now threatens to grow and cover more than 1,400 acres.

Hydrilla in Lake Austin

The Lower Colorado River Authority has signed off on an "integrated pest management" plan to tame the hydrilla scourge in Lake Austin. The noxious, fast-growing Asian water weed, imported to the U.S. for use in aquariums, is now invading waterways throughout the South, covers more than 300 acres of Lake Austin, and has been blamed for at least one Austin death. The LCRA plan includes lowering lake levels (which everyone supports), using EPA-approved herbicides (which enviros don't like), mechanical harvesting (which the LCRA isn't crazy about), and introducing sterile grass carp to munch on the tasty weed (which fishermen despise, fearing the carp will eat all the vegetation in the lake).

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