Not all that bright green stuff floating on the water is harmful
September 28, 2016
Harmful Algae Bloom, Rondout Creek at the DEC fishing access site on Creek Locks Road in the Town of Ulster, Sept. 26, 2016 (Photo by Jen Epstein / Riverkeeper)
Duckweed on the Hudson River, September 2015. (Photo by John Lipscomb / Riverkeeper)
Related campaigns
Water quality monitoring
Riverkeeper is the go-to source for information about the quality of the water along the Hudson River and its tributaries
Emerging and unregulated contaminants
Toxic chemicals can harm the health of people, wildlife, aquatic ecosystems
Invasive species
Protecting the Hudson includes defending it against outside threats