Learning session: Understanding harmful algal blooms on the Hudson
September 23, 2025
12:00 pm
The Hudson is experiencing its largest harmful algal bloom (HAB) on record. A green sheen of toxic bacteria centered near Kingston is covering the river and has been observed at various locations primarily from Poughkeepsie to Germantown. These outbreaks of blue-green algae can release toxins, threaten fish and wildlife, and raise serious concerns for people and pets.
Join Riverkeeper’s experts for a lunchtime session on Tuesday, September 23, from 12:00 pm to 1:00 pm, to learn what harmful algal blooms are, why they matter, and what the recent bloom in the Hudson tells us about the river’s health. You will have a chance to ask questions about Riverkeeper's current response to this unprecedented situation and deepen your understanding of how we can work together to keep communities safe and informed.
Join Riverkeeper’s experts for a lunchtime session on Tuesday, September 23, from 12:00 pm to 1:00 pm, to learn what harmful algal blooms are, why they matter, and what the recent bloom in the Hudson tells us about the river’s health. You will have a chance to ask questions about Riverkeeper's current response to this unprecedented situation and deepen your understanding of how we can work together to keep communities safe and informed.