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Health officials are urging residents to avoid the Hudson River due to the largest toxic algae bloom in nearly 40 years. The bloom, identified as microcystis, stretches from Kingston to Staatsburg and south into Beacon, Hyde Park, and Garrison. It poses risks to humans, pets, and wildlife, causing skin irritation, respiratory issues, and stomach problems. The Cary Institute of Ecosystem Studies first detected the bloom during routine sampling, and it has since been confirmed by the New York State Department of Environmental Conservation (DEC). According to Times Union, the bloom appears as "green paint-like swirls" on the river's surface.
Environmental factors such as warm weather, drought, and nutrient pollution contribute to the bloom's development. The DEC has placed the entire Hudson Valley, except Westchester County, under a drought watch. Riverkeeper, an environmental advocacy group, describes the outbreak as "unprecedented," warning that it threatens drinking water, recreation, and ecosystems. They advise avoiding contact with the river, as toxins can be ingested, inhaled, or absorbed through the skin.
The Clearwater organization has also confirmed the presence of harmful algal blooms (HABs) and advises documenting and reporting any suspected blooms to the DEC. The situation continues to be monitored by the Cary Institute, Riverkeeper, the DEC, and the state Department of Health.