Learning session: Understanding harmful algal blooms on the Hudson
September 23, 2025
12:00 pm
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.
Other upcoming events
Feb
26
From Tap to Table: Exploring NYC’s Drinking Water Supply and Its Role In Our Favorite Foods
February 26, 2026
12:30 pm - 1:30 pm
Zoom
Join us for this edition of The Current, Riverkeeper's speaker series, where we explore NYC's drinking water supply and its role in our favorite foods with special guest speaker Scott Weiner, founder of Scott's Pizza Tours.
Mar
19
Revelry for the River - To benefit New York City's water
March 19, 2026
5:30 pm - 8:30 pm
Manhatta - New York, New York
Join fellow water-lovers for exceptional bites, cocktails, and views at Manhatta, an award-winning modern American restaurant from Danny Meyer's Union Square Hospitality Group that is featured in the Michelin Guide.
May
2
Riverkeeper Sweep 2026
May 2, 2026
Locations throughout New York City and the Hudson Valley
With your help, the 15th annual Riverkeeper Sweep will reach new communities, engage new volunteers, and restore additional stretches of shoreline in the Hudson River watershed.