Harmful Algal Blooms, Hypoxia, and Nutrients Research Webinar Series

Decorative compilation of pictures depicting harmful algal blooms and nutrient sources.

New Topic coming for February 2026 - Stay tuned! 

About the Webinar Series

Related Resources

Hosted by EPA, this free webinar series is focused on communicating the latest, cutting-edge research related to nutrients and the priority impacts of nutrient pollution: harmful algal blooms (HABs) and hypoxia.

Topics will include regional priorities; regulatory updates; and cutting-edge EPA research related to monitoring and forecasting, prevention, control, and response.

Webinars are typically held bimonthly from 2 to 3 p.m. ET on the last Wednesday of the month. Additional information and registration will be posted closer to the scheduled date and as they become available.

Past Webinar Recordings

Links to closed-captioned recordings of past webinars hosted on EPA's YouTube channel are available below. Certificates cannot be provided for watching the webinar recordings.

DateTopic
9/24/2025Predicting Harmful Algal Blooms and Toxins in Lakes of the Conterminous United States
7/2/2025

Applying EPA’s National Nutrient Inventory to quantify landscape nutrient inputs and interception to support state and local water quality objectives 

NEW: Check out this recent publication on the NNI

5/7/2025Connecting Soil Health and Water Quality in Agricultural Systems
3/26/2025Application of Stable Isotopes to Understand Environmental Processes in Multiple Habitats
11/20/2024Health Effects and Ecology of Anatoxin-Producing Cyanobacteria
9/25/2024Coastal Dissolved Oxygen Dynamics and a Brief Introduction to the Hypoxia Task Force
7/31/2024Climate Change: Nutrient and Sediment Impacts
5/22/2024Using Wetlands to Reduce Nutrient Loadings to Rivers and the Coast
3/27/2024Genetic Science Applications in Predicting Cyanobacterial Blooms
1/31/2024Development and Application of HABs Forecasting Science

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Last updated on January 6, 2026