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December 29, 2014
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Large blooms of didymo discovered in Delaware River


Additionally, Didymo can easily attach to any fishing equipment, especially felt-soled boots, and the chance of it hitchhiking its way into nearby streams or rivers that currently lack this unwanted invader is cause for alarm. The risk is compounded by the bloom’s timing with the beginning of trout season, when anglers flock to the river in large numbers. This spring’s warm weather and low flows are bringing out even more fishing enthusiasts, further amplifying the concern for spread.

DRBC staff is coordinating with scientists from Pennsylvania, New York, New Jersey, and the National Park Service to quickly alert the public and identify appropriate next steps. Samples already collected were sent to the laboratory at The Academy of Natural Sciences in Philadelphia where Academy scientists confirmed the identification of Didymo. Follow-up surveys to determine the actual downstream extent of the bloom are planned once river conditions improve after the weekend’s rains.

For more details, including additional information on Didymo and how to prevent its spread by properly cleaning equipment before entering another stream or river, please visit www.drbc.net.

The DRBC is a federal/interstate government agency responsible for managing the water resources within the 13,539 square-mile Delaware River Basin. The five commission members are the governors of the basin states (Delaware, New Jersey, New York, and Pennsylvania) and the commander of the U.S. Army Corps of Engineers’ North Atlantic Division, who represents the federal government.